Cheap Flights from London to Washington (LHR to DCA)

Discover more affordable routes and cheaper dates from London to Washington (LHR to DCA) within a date range.

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€376

2:10pm - 10:18am
Thu Jun 19th 2025

25h 8m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Thu Jun 19th 2025 WestJet · WS 19 Depart at 2:10pm from London (LHR) Fly for 8h 45m Arrive at 3:55pm in Calgary (YYC)

Layover in Calgary for 9h 10m

Fri Jun 20th 2025 Air Canada · AC 316 Depart at 1:05am from Calgary (YYC) Fly for 4h 5m Arrive at 7:10am in Montreal (YUL)

Layover in Montreal for 1h 20m

Fri Jun 20th 2025 Air Canada · AC 8821 Depart at 8:30am from Montreal (YUL) Fly for 1h 48m Arrive at 10:18am in Washington, D.C. (DCA)

Book Flight
€403

1:55pm - 10:19am
Mon May 12th 2025

25h 24m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Mon May 12th 2025 WestJet · WS 19 Depart at 1:55pm from London (LHR) Fly for 8h 45m Arrive at 3:40pm in Calgary (YYC)

Layover in Calgary for 9h 15m

Tue May 13th 2025 Air Canada · AC 316 Depart at 12:55am from Calgary (YYC) Fly for 4h 15m Arrive at 7:10am in Montreal (YUL)

Layover in Montreal for 1h 20m

Tue May 13th 2025 Air Canada · AC 8821 Depart at 8:30am from Montreal (YUL) Fly for 1h 49m Arrive at 10:19am in Washington, D.C. (DCA)

Book Flight
€405

2:10pm - 8:53am
Wed May 14th 2025

23h 43m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Wed May 14th 2025 WestJet · WS 19 Depart at 2:10pm from London (LHR) Fly for 8h 45m Arrive at 3:55pm in Calgary (YYC)

Layover in Calgary for 3h 0m

Wed May 14th 2025 Air Canada · AC 158 Depart at 6:55pm from Calgary (YYC) Fly for 3h 55m Arrive at 12:50am in Toronto (YYZ)

Layover in Toronto for 6h 30m

Thu May 15th 2025 Air Canada · AC 8780 Depart at 7:20am from Toronto (YYZ) Fly for 1h 33m Arrive at 8:53am in Washington, D.C. (DCA)

Book Flight
€410

1:55pm - 8:53am
Mon May 12th 2025

23h 58m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Mon May 12th 2025 WestJet · WS 19 Depart at 1:55pm from London (LHR) Fly for 8h 45m Arrive at 3:40pm in Calgary (YYC)

Layover in Calgary for 8h 15m

Mon May 12th 2025 Air Canada · AC 154 Depart at 11:55pm from Calgary (YYC) Fly for 3h 55m Arrive at 5:50am in Toronto (YYZ)

Layover in Toronto for 1h 30m

Tue May 13th 2025 Air Canada · AC 8780 Depart at 7:20am from Toronto (YYZ) Fly for 1h 33m Arrive at 8:53am in Washington, D.C. (DCA)

Book Flight
€524

9:30am - 3:49pm
Sat May 3rd 2025

11h 19m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Sat May 3rd 2025 United Airlines · UA 8035 Depart at 9:30am from London (LHR) Fly for 7h 10m Arrive at 11:40am in Montreal (YUL)

Layover in Montreal for 2h 20m

Sat May 3rd 2025 United Airlines · UA 8372 Depart at 2:00pm from Montreal (YUL) Fly for 1h 49m Arrive at 3:49pm in Washington, D.C. (DCA)

Book Flight
€530

9:30am - 3:49pm
Sat May 10th 2025

11h 19m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Sat May 10th 2025 United Airlines · UA 8035 Depart at 9:30am from London (LHR) Fly for 7h 10m Arrive at 11:40am in Montreal (YUL)

Layover in Montreal for 2h 20m

Sat May 10th 2025 United Airlines · UA 8372 Depart at 2:00pm from Montreal (YUL) Fly for 1h 49m Arrive at 3:49pm in Washington, D.C. (DCA)

Book Flight
€813

10:50am - 10:55pm
Tue Oct 14th 2025

17h 5m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Tue Oct 14th 2025 Iberia Airlines · IB 714 Depart at 10:50am from London (LHR) Fly for 2h 25m Arrive at 2:15pm in Madrid (MAD)

Layover in Madrid for 2h 5m

Tue Oct 14th 2025 Finnair · AY 5655 Depart at 4:20pm from Madrid (MAD) Fly for 8h 35m Arrive at 6:55pm in New York (JFK)

Layover in New York for 2h 25m

Tue Oct 14th 2025 Finnair · AY 4119 Depart at 9:20pm from New York (JFK) Fly for 1h 35m Arrive at 10:55pm in Washington, D.C. (DCA)

Book Flight
€849

7:50pm - 9:42pm
Wed Apr 30th 2025

30h 52m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Wed Apr 30th 2025 TAP Portugal · TP 1369 Depart at 7:50pm from London (LHR) Fly for 2h 45m Arrive at 10:35pm in Lisbon (LIS)

Layover in Lisbon for 13h 40m

Thu May 1st 2025 TAP Portugal · TP 201 Depart at 12:15pm from Lisbon (LIS) Fly for 8h 5m Arrive at 3:20pm in New York (EWR)

Layover in New York for 4h 40m

Thu May 1st 2025 TAP Portugal · TP 8502 Depart at 8:00pm from New York (EWR) Fly for 1h 42m Arrive at 9:42pm in Washington, D.C. (DCA)

Book Flight
€849

6:45pm - 9:42pm
Wed Apr 30th 2025

31h 57m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Wed Apr 30th 2025 TAP Portugal · TP 1357 Depart at 6:45pm from London (LHR) Fly for 2h 45m Arrive at 9:30pm in Lisbon (LIS)

Layover in Lisbon for 14h 45m

Thu May 1st 2025 TAP Portugal · TP 201 Depart at 12:15pm from Lisbon (LIS) Fly for 8h 5m Arrive at 3:20pm in New York (EWR)

Layover in New York for 4h 40m

Thu May 1st 2025 TAP Portugal · TP 8502 Depart at 8:00pm from New York (EWR) Fly for 1h 42m Arrive at 9:42pm in Washington, D.C. (DCA)

Book Flight
€851

7:50pm - 7:41pm
Thu May 1st 2025

52h 51m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Thu May 1st 2025 TAP Portugal · TP 1369 Depart at 7:50pm from London (LHR) Fly for 2h 45m Arrive at 10:35pm in Lisbon (LIS)

Layover in Lisbon for 19h 20m

Fri May 2nd 2025 TAP Portugal · TP 203 Depart at 5:55pm from Lisbon (LIS) Fly for 8h 5m Arrive at 9:00pm in New York (EWR)

Layover in New York for 21h 0m

Sat May 3rd 2025 TAP Portugal · TP 8500 Depart at 6:00pm from New York (EWR) Fly for 1h 41m Arrive at 7:41pm in Washington, D.C. (DCA)

Book Flight
€887

9:25pm - 7:41am
Sat May 3rd 2025

39h 16m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Sat May 3rd 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 10h 20m

Sun May 4th 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 18h 25m

Mon May 5th 2025 Icelandair · FI 7871 Depart at 6:00am from Boston (BOS) Fly for 1h 41m Arrive at 7:41am in Washington, D.C. (DCA)

Book Flight
€887

9:25pm - 9:10am
Sat May 3rd 2025

40h 45m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Sat May 3rd 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 10h 20m

Sun May 4th 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 19h 55m

Mon May 5th 2025 Icelandair · FI 7827 Depart at 7:30am from Boston (BOS) Fly for 1h 40m Arrive at 9:10am in Washington, D.C. (DCA)

Book Flight
€889

9:25pm - 7:41am
Sat May 3rd 2025

39h 16m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Sat May 3rd 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 17h 35m

Sun May 4th 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 11h 10m

Mon May 5th 2025 Icelandair · FI 7871 Depart at 6:00am from Boston (BOS) Fly for 1h 41m Arrive at 7:41am in Washington, D.C. (DCA)

Book Flight
€897

9:25pm - 4:55pm
Tue Apr 29th 2025

24h 30m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Tue Apr 29th 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 10h 20m

Wed Apr 30th 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 3h 35m

Wed Apr 30th 2025 Icelandair · FI 7871 Depart at 3:10pm from Boston (BOS) Fly for 1h 45m Arrive at 4:55pm in Washington, D.C. (DCA)

Book Flight
€898

9:25pm - 4:55pm
Sat May 3rd 2025

24h 30m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Sat May 3rd 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 10h 20m

Sun May 4th 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 3h 35m

Sun May 4th 2025 Icelandair · FI 7827 Depart at 3:10pm from Boston (BOS) Fly for 1h 45m Arrive at 4:55pm in Washington, D.C. (DCA)

Book Flight
€902

9:25pm - 6:00pm
Tue Apr 29th 2025

25h 35m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Tue Apr 29th 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 10h 20m

Wed Apr 30th 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 4h 38m

Wed Apr 30th 2025 Icelandair · FI 7829 Depart at 4:13pm from Boston (BOS) Fly for 1h 47m Arrive at 6:00pm in Washington, D.C. (DCA)

Book Flight
€905

1:05pm - 4:55pm
Sat May 3rd 2025

32h 50m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Sat May 3rd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 18h 40m

Sun May 4th 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 3h 35m

Sun May 4th 2025 Icelandair · FI 7827 Depart at 3:10pm from Boston (BOS) Fly for 1h 45m Arrive at 4:55pm in Washington, D.C. (DCA)

Book Flight
€910

9:25pm - 7:41am
Tue Apr 29th 2025

39h 16m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Tue Apr 29th 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 17h 35m

Wed Apr 30th 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 11h 10m

Thu May 1st 2025 Icelandair · FI 7829 Depart at 6:00am from Boston (BOS) Fly for 1h 41m Arrive at 7:41am in Washington, D.C. (DCA)

Book Flight
€911

8:00am - 7:42pm
Wed Apr 30th 2025

16h 42m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Wed Apr 30th 2025 TAP Portugal · TP 1351 Depart at 8:00am from London (LHR) Fly for 2h 45m Arrive at 10:45am in Lisbon (LIS)

Layover in Lisbon for 1h 30m

Wed Apr 30th 2025 TAP Portugal · TP 201 Depart at 12:15pm from Lisbon (LIS) Fly for 8h 5m Arrive at 3:20pm in New York (EWR)

Layover in New York for 2h 40m

Wed Apr 30th 2025 United Airlines · UA 3504 Depart at 6:00pm from New York (EWR) Fly for 1h 42m Arrive at 7:42pm in Washington, D.C. (DCA)

Book Flight
€935

1:05pm - 11:00am
Fri May 2nd 2025

26h 55m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 1h 55m

Fri May 2nd 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 14h 30m

Sat May 3rd 2025 Icelandair · FI 7829 Depart at 9:20am from Boston (BOS) Fly for 1h 40m Arrive at 11:00am in Washington, D.C. (DCA)

Book Flight
€935

1:05pm - 11:00am
Fri May 2nd 2025

26h 55m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 4h 55m

Fri May 2nd 2025 Icelandair · FI 633 Depart at 8:10pm from Reykjavik (KEF) Fly for 5h 50m Arrive at 10:00pm in Boston (BOS)

Layover in Boston for 11h 20m

Sat May 3rd 2025 Icelandair · FI 7829 Depart at 9:20am from Boston (BOS) Fly for 1h 40m Arrive at 11:00am in Washington, D.C. (DCA)

Book Flight
€935

9:25pm - 8:04pm
Fri May 2nd 2025

27h 39m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 10h 20m

Sat May 3rd 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 6h 35m

Sat May 3rd 2025 Icelandair · FI 7871 Depart at 6:10pm from Boston (BOS) Fly for 1h 54m Arrive at 8:04pm in Washington, D.C. (DCA)

Book Flight
€935

1:05pm - 4:58pm
Fri May 2nd 2025

32h 53m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 1h 55m

Fri May 2nd 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 20h 20m

Sat May 3rd 2025 Icelandair · FI 7827 Depart at 3:10pm from Boston (BOS) Fly for 1h 48m Arrive at 4:58pm in Washington, D.C. (DCA)

Book Flight
€935

1:05pm - 4:58pm
Fri May 2nd 2025

32h 53m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 4h 55m

Fri May 2nd 2025 Icelandair · FI 633 Depart at 8:10pm from Reykjavik (KEF) Fly for 5h 50m Arrive at 10:00pm in Boston (BOS)

Layover in Boston for 17h 10m

Sat May 3rd 2025 Icelandair · FI 7827 Depart at 3:10pm from Boston (BOS) Fly for 1h 48m Arrive at 4:58pm in Washington, D.C. (DCA)

Book Flight
€936

6:00am - 7:41pm
Sat May 3rd 2025

18h 41m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Sat May 3rd 2025 TAP Portugal · TP 1363 Depart at 6:00am from London (LHR) Fly for 2h 45m Arrive at 8:45am in Lisbon (LIS)

Layover in Lisbon for 3h 30m

Sat May 3rd 2025 TAP Portugal · TP 201 Depart at 12:15pm from Lisbon (LIS) Fly for 8h 5m Arrive at 3:20pm in New York (EWR)

Layover in New York for 2h 40m

Sat May 3rd 2025 TAP Portugal · TP 8500 Depart at 6:00pm from New York (EWR) Fly for 1h 41m Arrive at 7:41pm in Washington, D.C. (DCA)

Book Flight
€936

8:00am - 9:42pm
Fri May 2nd 2025

18h 42m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 TAP Portugal · TP 1351 Depart at 8:00am from London (LHR) Fly for 2h 45m Arrive at 10:45am in Lisbon (LIS)

Layover in Lisbon for 1h 30m

Fri May 2nd 2025 TAP Portugal · TP 201 Depart at 12:15pm from Lisbon (LIS) Fly for 8h 5m Arrive at 3:20pm in New York (EWR)

Layover in New York for 4h 40m

Fri May 2nd 2025 TAP Portugal · TP 8502 Depart at 8:00pm from New York (EWR) Fly for 1h 42m Arrive at 9:42pm in Washington, D.C. (DCA)

Book Flight
€937

1:05pm - 4:58pm
Fri May 2nd 2025

32h 53m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 18h 40m

Sat May 3rd 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 3h 35m

Sat May 3rd 2025 Icelandair · FI 7827 Depart at 3:10pm from Boston (BOS) Fly for 1h 48m Arrive at 4:58pm in Washington, D.C. (DCA)

Book Flight
€938

9:25pm - 4:58pm
Fri May 2nd 2025

24h 33m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 10h 20m

Sat May 3rd 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 3h 35m

Sat May 3rd 2025 Icelandair · FI 7827 Depart at 3:10pm from Boston (BOS) Fly for 1h 48m Arrive at 4:58pm in Washington, D.C. (DCA)

Book Flight
€947

1:05pm - 7:41am
Fri May 2nd 2025

23h 36m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 4h 55m

Fri May 2nd 2025 Icelandair · FI 633 Depart at 8:10pm from Reykjavik (KEF) Fly for 5h 50m Arrive at 10:00pm in Boston (BOS)

Layover in Boston for 8h 0m

Sat May 3rd 2025 Icelandair · FI 7825 Depart at 6:00am from Boston (BOS) Fly for 1h 41m Arrive at 7:41am in Washington, D.C. (DCA)

Book Flight
€948

1:05pm - 7:41am
Fri May 2nd 2025

23h 36m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 1h 55m

Fri May 2nd 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 11h 10m

Sat May 3rd 2025 Icelandair · FI 7825 Depart at 6:00am from Boston (BOS) Fly for 1h 41m Arrive at 7:41am in Washington, D.C. (DCA)

Book Flight
€949

1:05pm - 8:04pm
Fri May 2nd 2025

35h 59m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 18h 40m

Sat May 3rd 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 6h 35m

Sat May 3rd 2025 Icelandair · FI 7871 Depart at 6:10pm from Boston (BOS) Fly for 1h 54m Arrive at 8:04pm in Washington, D.C. (DCA)

Book Flight
€954

8:00am - 7:42pm
Wed Apr 30th 2025

16h 42m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Wed Apr 30th 2025 TAP Portugal · TP 1351 Depart at 8:00am from London (LHR) Fly for 2h 45m Arrive at 10:45am in Lisbon (LIS)

Layover in Lisbon for 1h 30m

Wed Apr 30th 2025 TAP Portugal · TP 201 Depart at 12:15pm from Lisbon (LIS) Fly for 8h 5m Arrive at 3:20pm in New York (EWR)

Layover in New York for 2h 40m

Wed Apr 30th 2025 TAP Portugal · TP 8500 Depart at 6:00pm from New York (EWR) Fly for 1h 42m Arrive at 7:42pm in Washington, D.C. (DCA)

Book Flight
€954

7:50pm - 7:42pm
Tue Apr 29th 2025

28h 52m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Tue Apr 29th 2025 TAP Portugal · TP 1369 Depart at 7:50pm from London (LHR) Fly for 2h 45m Arrive at 10:35pm in Lisbon (LIS)

Layover in Lisbon for 13h 40m

Wed Apr 30th 2025 TAP Portugal · TP 201 Depart at 12:15pm from Lisbon (LIS) Fly for 8h 5m Arrive at 3:20pm in New York (EWR)

Layover in New York for 2h 40m

Wed Apr 30th 2025 TAP Portugal · TP 8500 Depart at 6:00pm from New York (EWR) Fly for 1h 42m Arrive at 7:42pm in Washington, D.C. (DCA)

Book Flight
€954

9:25pm - 7:41am
Thu May 1st 2025

39h 16m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Thu May 1st 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 17h 35m

Fri May 2nd 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 11h 10m

Sat May 3rd 2025 Icelandair · FI 7825 Depart at 6:00am from Boston (BOS) Fly for 1h 41m Arrive at 7:41am in Washington, D.C. (DCA)

Book Flight
€954

9:25pm - 7:41am
Wed Apr 30th 2025

39h 16m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Wed Apr 30th 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 17h 35m

Thu May 1st 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 11h 10m

Fri May 2nd 2025 Icelandair · FI 7871 Depart at 6:00am from Boston (BOS) Fly for 1h 41m Arrive at 7:41am in Washington, D.C. (DCA)

Book Flight
€954

9:25pm - 7:41am
Thu May 1st 2025

39h 16m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Thu May 1st 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 20h 35m

Fri May 2nd 2025 Icelandair · FI 633 Depart at 8:10pm from Reykjavik (KEF) Fly for 5h 50m Arrive at 10:00pm in Boston (BOS)

Layover in Boston for 8h 0m

Sat May 3rd 2025 Icelandair · FI 7825 Depart at 6:00am from Boston (BOS) Fly for 1h 41m Arrive at 7:41am in Washington, D.C. (DCA)

Book Flight
€954

9:25pm - 11:00am
Thu May 1st 2025

42h 35m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Thu May 1st 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 17h 35m

Fri May 2nd 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 14h 30m

Sat May 3rd 2025 Icelandair · FI 7829 Depart at 9:20am from Boston (BOS) Fly for 1h 40m Arrive at 11:00am in Washington, D.C. (DCA)

Book Flight
€956

8:00am - 9:41pm
Fri Apr 25th 2025

18h 41m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri Apr 25th 2025 TAP Portugal · TP 1351 Depart at 8:00am from London (LHR) Fly for 2h 45m Arrive at 10:45am in Lisbon (LIS)

Layover in Lisbon for 1h 30m

Fri Apr 25th 2025 TAP Portugal · TP 201 Depart at 12:15pm from Lisbon (LIS) Fly for 8h 5m Arrive at 3:20pm in New York (EWR)

Layover in New York for 4h 40m

Fri Apr 25th 2025 TAP Portugal · TP 8502 Depart at 8:00pm from New York (EWR) Fly for 1h 41m Arrive at 9:41pm in Washington, D.C. (DCA)

Book Flight
€956

9:25pm - 6:00pm
Wed Apr 30th 2025

25h 35m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Wed Apr 30th 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 10h 20m

Thu May 1st 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 4h 38m

Thu May 1st 2025 Icelandair · FI 7825 Depart at 4:13pm from Boston (BOS) Fly for 1h 47m Arrive at 6:00pm in Washington, D.C. (DCA)

Book Flight
€962

1:05pm - 8:04pm
Fri May 2nd 2025

35h 59m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 1h 55m

Fri May 2nd 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 23h 20m

Sat May 3rd 2025 Icelandair · FI 7871 Depart at 6:10pm from Boston (BOS) Fly for 1h 54m Arrive at 8:04pm in Washington, D.C. (DCA)

Book Flight
€962

1:05pm - 8:04pm
Fri May 2nd 2025

35h 59m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Fri May 2nd 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 4h 55m

Fri May 2nd 2025 Icelandair · FI 633 Depart at 8:10pm from Reykjavik (KEF) Fly for 5h 50m Arrive at 10:00pm in Boston (BOS)

Layover in Boston for 20h 10m

Sat May 3rd 2025 Icelandair · FI 7871 Depart at 6:10pm from Boston (BOS) Fly for 1h 54m Arrive at 8:04pm in Washington, D.C. (DCA)

Book Flight
€965

1:05pm - 7:41am
Thu May 1st 2025

23h 36m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Thu May 1st 2025 Icelandair · FI 451 Depart at 1:05pm from London (LHR) Fly for 3h 10m Arrive at 3:15pm in Reykjavik (KEF)

Layover in Reykjavik for 1h 55m

Thu May 1st 2025 Icelandair · FI 631 Depart at 5:10pm from Reykjavik (KEF) Fly for 5h 40m Arrive at 6:50pm in Boston (BOS)

Layover in Boston for 11h 10m

Fri May 2nd 2025 Icelandair · FI 7871 Depart at 6:00am from Boston (BOS) Fly for 1h 41m Arrive at 7:41am in Washington, D.C. (DCA)

Book Flight
€965

9:25pm - 4:55pm
Wed Apr 30th 2025

24h 30m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Wed Apr 30th 2025 Icelandair · FI 455 Depart at 9:25pm from London (LHR) Fly for 3h 10m Arrive at 11:35pm in Reykjavik (KEF)

Layover in Reykjavik for 10h 20m

Thu May 1st 2025 Icelandair · FI 635 Depart at 9:55am from Reykjavik (KEF) Fly for 5h 40m Arrive at 11:35am in Boston (BOS)

Layover in Boston for 3h 35m

Thu May 1st 2025 Icelandair · FI 7871 Depart at 3:10pm from Boston (BOS) Fly for 1h 45m Arrive at 4:55pm in Washington, D.C. (DCA)

Book Flight
€1043

2:10pm - 11:25am
Sat May 3rd 2025

26h 15m
London (LHR) → Washington, D.C. (DCA)

2 Stops

Sat May 3rd 2025 WestJet · WS 19 Depart at 2:10pm from London (LHR) Fly for 8h 45m Arrive at 3:55pm in Calgary (YYC)

Layover in Calgary for 8h 35m

Sun May 4th 2025 WestJet · WS 1992 Depart at 12:30am from Calgary (YYC) Fly for 4h 26m Arrive at 6:56am in Atlanta (ATL)

Layover in Atlanta for 2h 49m

Sun May 4th 2025 WestJet · WS 7778 Depart at 9:45am from Atlanta (ATL) Fly for 1h 40m Arrive at 11:25am in Washington, D.C. (DCA)

Book Flight
€1153

1:20pm - 7:07pm
Mon May 19th 2025

10h 47m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Mon May 19th 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 35m

Mon May 19th 2025 Iberia Airlines · IB 4928 Depart at 5:45pm from New York (JFK) Fly for 1h 22m Arrive at 7:07pm in Washington, D.C. (DCA)

Book Flight
€2558

1:20pm - 7:04pm
Sat May 3rd 2025

10h 44m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Sat May 3rd 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 32m

Sat May 3rd 2025 Iberia Airlines · IB 4928 Depart at 5:42pm from New York (JFK) Fly for 1h 22m Arrive at 7:04pm in Washington, D.C. (DCA)

Book Flight
€2558

1:20pm - 7:04pm
Fri May 2nd 2025

10h 44m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Fri May 2nd 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 32m

Fri May 2nd 2025 Iberia Airlines · IB 4928 Depart at 5:42pm from New York (JFK) Fly for 1h 22m Arrive at 7:04pm in Washington, D.C. (DCA)

Book Flight
€2606

1:20pm - 7:04pm
Sat Apr 26th 2025

10h 44m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Sat Apr 26th 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 32m

Sat Apr 26th 2025 Iberia Airlines · IB 4928 Depart at 5:42pm from New York (JFK) Fly for 1h 22m Arrive at 7:04pm in Washington, D.C. (DCA)

Book Flight
€2606

1:20pm - 7:04pm
Tue Apr 29th 2025

10h 44m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Tue Apr 29th 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 32m

Tue Apr 29th 2025 Iberia Airlines · IB 4928 Depart at 5:42pm from New York (JFK) Fly for 1h 22m Arrive at 7:04pm in Washington, D.C. (DCA)

Book Flight
€2606

1:20pm - 7:04pm
Wed Apr 30th 2025

10h 44m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Wed Apr 30th 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 32m

Wed Apr 30th 2025 Iberia Airlines · IB 4928 Depart at 5:42pm from New York (JFK) Fly for 1h 22m Arrive at 7:04pm in Washington, D.C. (DCA)

Book Flight
€2606

1:20pm - 7:04pm
Thu Apr 24th 2025

10h 44m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Thu Apr 24th 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 32m

Thu Apr 24th 2025 Iberia Airlines · IB 4928 Depart at 5:42pm from New York (JFK) Fly for 1h 22m Arrive at 7:04pm in Washington, D.C. (DCA)

Book Flight
€2612

1:20pm - 7:04pm
Thu May 1st 2025

10h 44m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Thu May 1st 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 32m

Thu May 1st 2025 Iberia Airlines · IB 4928 Depart at 5:42pm from New York (JFK) Fly for 1h 22m Arrive at 7:04pm in Washington, D.C. (DCA)

Book Flight
€2612

1:20pm - 7:04pm
Mon Apr 28th 2025

10h 44m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Mon Apr 28th 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 32m

Mon Apr 28th 2025 Iberia Airlines · IB 4928 Depart at 5:42pm from New York (JFK) Fly for 1h 22m Arrive at 7:04pm in Washington, D.C. (DCA)

Book Flight
€2612

1:20pm - 7:04pm
Fri Apr 25th 2025

10h 44m
London (LHR) → Washington, D.C. (DCA)

1 Stop

Fri Apr 25th 2025 Iberia Airlines · IB 3563 Depart at 1:20pm from London (LHR) Fly for 7h 50m Arrive at 4:10pm in New York (JFK)

Layover in New York for 1h 32m

Fri Apr 25th 2025 Iberia Airlines · IB 4928 Depart at 5:42pm from New York (JFK) Fly for 1h 22m Arrive at 7:04pm in Washington, D.C. (DCA)

Book Flight

Sarah Belizaire

@sarahbb1

Have flexible travel plans or looking for alternative routes given the chaos? Check out all the connection possibilities via a super helpful site created by @ismaelyws flightlist.io thanks to @andy_travels for the recommendation #travel #flights

John Ford

@eyupitsjohn

There seem to be lots of sites launching at the moment that promise to find you cheap flights but not many have the professional finish of Flightlist by @ismaelyws #travel #flights

Roaming Sonaa

@roamingsonaa

For people wanting to maximize their trips, Flightlist is my newest travel hack for uncovering the coolest routes at irresistible prices. No stress, no annoying ads — just seamless flight booking with amazing functionality. It's designed for remote workers, backpackers, and people living abroad.

Read Sonaa's 7 Amazing Skyscanner Alternatives for Booking Travel

ANDY TRAVELS

@andy_travels

@ismaelyws Just tried out Flightlist for the first time. Really nice idea, well made, and just what I need at the moment 👍

Travel With Bender

@travelwitbender

Did you spot my recent article about how to score cheap one way flights? ✈️ FlightList is my new secret tool for discovering cheap routes, within a departure date range. Plus you can also search by country/region for departures & destinations. Powerful! 💪

Read Josh's Ultimate Guide To Find Cheap One Way Flights

Wesley Mergard

@travel.with.wes

One useful tool I've found for evaluating different departure and return dates is called FlightList.io. You can quickly scan different travel date ranges, carriers and one way flight options to easily determine the cheapest flight combinations for your trip.

Read Wesley's My Best Cheap Flight Hacks (Why Pay More?)

Cheap Flights from London to Washington (LHR to DCA)

Sarah Belizaire

John Ford

Roaming Sonaa

ANDY TRAVELS

Travel With Bender

Wesley Mergard

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Why I Built FlightList & Solved My Own Problem

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