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One Way Flights from Boston to Seattle (BOS to SEA)

Discover alternate routes & cheap one way flights from Boston to Seattle (BOS to SEA) within a departure date range.

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USD 185
7:00am - 10:23am
Tue Feb 11th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 11th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 186
5:00pm - 8:23pm
Tue Feb 11th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 11th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 190
11:00am - 2:23pm
Tue Feb 18th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 18th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 190
5:00pm - 8:23pm
Sat Feb 8th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 8th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 190
7:00am - 10:23am
Tue Feb 4th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 4th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 190
5:00pm - 8:23pm
Tue Feb 4th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 4th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 190
5:00pm - 8:23pm
Wed Feb 12th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 12th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 190
11:00am - 2:23pm
Wed Feb 19th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 19th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 190
7:00am - 10:23am
Wed Feb 19th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 19th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 190
5:00pm - 8:23pm
Wed Feb 5th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 5th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 190
7:00am - 10:23am
Wed Feb 12th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 12th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 190
7:00am - 10:23am
Wed Feb 5th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 5th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 190
5:00pm - 8:23pm
Sat Feb 1st
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 1st 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 190
7:00am - 10:23am
Tue Feb 18th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 18th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 190
5:00pm - 8:23pm
Tue Feb 25th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 25th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 190
7:00am - 10:23am
Tue Feb 25th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 25th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 190
11:00am - 2:23pm
Tue Feb 25th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 25th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 190
5:00pm - 8:23pm
Wed Feb 19th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 19th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 190
5:00pm - 8:23pm
Wed Feb 26th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 26th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 190
11:00am - 2:23pm
Wed Feb 26th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 26th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 190
7:00am - 10:23am
Wed Feb 26th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Wed Feb 26th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 190
5:00pm - 8:23pm
Tue Feb 18th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Tue Feb 18th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 195
5:00pm - 8:23pm
Mon Feb 10th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 10th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 195
5:00pm - 8:23pm
Mon Feb 3rd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 3rd 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 195
7:00am - 10:23am
Thu Feb 6th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 6th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 195
11:00am - 2:23pm
Thu Feb 27th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 27th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 195
7:00am - 10:23am
Mon Feb 10th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 10th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 195
5:00pm - 8:23pm
Thu Feb 27th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 27th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 195
7:00am - 10:23am
Mon Feb 3rd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 3rd 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 195
11:00am - 2:23pm
Fri Feb 28th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 28th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 195
5:00pm - 8:23pm
Fri Feb 28th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 28th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 195
5:00pm - 8:23pm
Fri Feb 21st
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 21st 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 195
11:00am - 2:23pm
Fri Feb 21st
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 21st 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 195
7:00am - 10:23am
Fri Feb 21st
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 21st 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 196
5:00pm - 8:23pm
Thu Feb 20th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 20th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 196
7:00am - 10:23am
Thu Feb 20th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 20th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 196
11:00am - 2:23pm
Thu Feb 20th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 20th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 196
7:00am - 10:23am
Thu Feb 27th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 27th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 196
7:00am - 10:23am
Fri Feb 7th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 7th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 196
5:00pm - 8:23pm
Fri Feb 7th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 7th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 196
7:00am - 10:23am
Fri Feb 28th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 28th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 196
5:00pm - 8:23pm
Thu Feb 6th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 6th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 201
7:00am - 10:23am
Mon Feb 24th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 24th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 201
7:00am - 10:23am
Sat Feb 22nd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 22nd 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 201
7:00am - 10:23am
Sun Feb 2nd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 2nd 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 238
7:00am - 10:23am
Sat Feb 8th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 8th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 238
5:00pm - 8:23pm
Mon Feb 24th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 24th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 238
11:00am - 2:23pm
Mon Feb 24th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 24th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 238
7:00am - 10:23am
Sat Feb 1st
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 1st 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 245
6:00am - 11:14am
Mon Feb 10th
8h 14m
Boston (BOS) → Seattle (SEA)
1 Stop
Mon Feb 10th 2025 United Airlines · UA 1833 Depart at 6:00am from Boston (BOS) Fly for 1h 13m Arrive at 7:13am in New York (EWR)
Layover in New York for 1h 2m
Mon Feb 10th 2025 United Airlines · UA 747 Depart at 8:15am from New York (EWR) Fly for 5h 59m Arrive at 11:14am in Seattle (SEA)
Book Flight
USD 245
5:05pm - 10:29pm
Mon Feb 10th
8h 24m
Boston (BOS) → Seattle (SEA)
1 Stop
Mon Feb 10th 2025 United Airlines · UA 2040 Depart at 5:05pm from Boston (BOS) Fly for 2h 47m Arrive at 6:52pm in Chicago (ORD)
Layover in Chicago for 1h 3m
Mon Feb 10th 2025 United Airlines · UA 2211 Depart at 7:55pm from Chicago (ORD) Fly for 4h 34m Arrive at 10:29pm in Seattle (SEA)
Book Flight
USD 245
6:00am - 11:26am
Mon Feb 10th
8h 26m
Boston (BOS) → Seattle (SEA)
1 Stop
Mon Feb 10th 2025 United Airlines · UA 1785 Depart at 6:00am from Boston (BOS) Fly for 1h 34m Arrive at 7:34am in Washington, D.C. (IAD)
Layover in Washington, D.C. for 1h 1m
Mon Feb 10th 2025 United Airlines · UA 1964 Depart at 8:35am from Washington, D.C. (IAD) Fly for 5h 51m Arrive at 11:26am in Seattle (SEA)
Book Flight
USD 245
6:00am - 11:40am
Mon Feb 10th
8h 40m
Boston (BOS) → Seattle (SEA)
1 Stop
Mon Feb 10th 2025 United Airlines · UA 1414 Depart at 6:00am from Boston (BOS) Fly for 2h 50m Arrive at 7:50am in Chicago (ORD)
Layover in Chicago for 1h 0m
Mon Feb 10th 2025 United Airlines · UA 1705 Depart at 8:50am from Chicago (ORD) Fly for 4h 50m Arrive at 11:40am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:14am
Sun Feb 2nd
8h 14m
Boston (BOS) → Seattle (SEA)
1 Stop
Sun Feb 2nd 2025 United Airlines · UA 1833 Depart at 6:00am from Boston (BOS) Fly for 1h 13m Arrive at 7:13am in New York (EWR)
Layover in New York for 1h 2m
Sun Feb 2nd 2025 United Airlines · UA 747 Depart at 8:15am from New York (EWR) Fly for 5h 59m Arrive at 11:14am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:14am
Fri Feb 7th
8h 14m
Boston (BOS) → Seattle (SEA)
1 Stop
Fri Feb 7th 2025 United Airlines · UA 1833 Depart at 6:00am from Boston (BOS) Fly for 1h 13m Arrive at 7:13am in New York (EWR)
Layover in New York for 1h 2m
Fri Feb 7th 2025 United Airlines · UA 747 Depart at 8:15am from New York (EWR) Fly for 5h 59m Arrive at 11:14am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:14am
Wed Feb 5th
8h 14m
Boston (BOS) → Seattle (SEA)
1 Stop
Wed Feb 5th 2025 United Airlines · UA 1833 Depart at 6:00am from Boston (BOS) Fly for 1h 13m Arrive at 7:13am in New York (EWR)
Layover in New York for 1h 2m
Wed Feb 5th 2025 United Airlines · UA 747 Depart at 8:15am from New York (EWR) Fly for 5h 59m Arrive at 11:14am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:14am
Sun Feb 9th
8h 14m
Boston (BOS) → Seattle (SEA)
1 Stop
Sun Feb 9th 2025 United Airlines · UA 1833 Depart at 6:00am from Boston (BOS) Fly for 1h 13m Arrive at 7:13am in New York (EWR)
Layover in New York for 1h 2m
Sun Feb 9th 2025 United Airlines · UA 747 Depart at 8:15am from New York (EWR) Fly for 5h 59m Arrive at 11:14am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:14am
Mon Feb 3rd
8h 14m
Boston (BOS) → Seattle (SEA)
1 Stop
Mon Feb 3rd 2025 United Airlines · UA 1833 Depart at 6:00am from Boston (BOS) Fly for 1h 13m Arrive at 7:13am in New York (EWR)
Layover in New York for 1h 2m
Mon Feb 3rd 2025 United Airlines · UA 747 Depart at 8:15am from New York (EWR) Fly for 5h 59m Arrive at 11:14am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:14am
Tue Feb 4th
8h 14m
Boston (BOS) → Seattle (SEA)
1 Stop
Tue Feb 4th 2025 United Airlines · UA 1833 Depart at 6:00am from Boston (BOS) Fly for 1h 13m Arrive at 7:13am in New York (EWR)
Layover in New York for 1h 2m
Tue Feb 4th 2025 United Airlines · UA 747 Depart at 8:15am from New York (EWR) Fly for 5h 59m Arrive at 11:14am in Seattle (SEA)
Book Flight
USD 247
5:05pm - 10:29pm
Wed Feb 5th
8h 24m
Boston (BOS) → Seattle (SEA)
1 Stop
Wed Feb 5th 2025 United Airlines · UA 2040 Depart at 5:05pm from Boston (BOS) Fly for 2h 47m Arrive at 6:52pm in Chicago (ORD)
Layover in Chicago for 1h 3m
Wed Feb 5th 2025 United Airlines · UA 2211 Depart at 7:55pm from Chicago (ORD) Fly for 4h 34m Arrive at 10:29pm in Seattle (SEA)
Book Flight
USD 247
5:05pm - 10:29pm
Tue Feb 4th
8h 24m
Boston (BOS) → Seattle (SEA)
1 Stop
Tue Feb 4th 2025 United Airlines · UA 2040 Depart at 5:05pm from Boston (BOS) Fly for 2h 47m Arrive at 6:52pm in Chicago (ORD)
Layover in Chicago for 1h 3m
Tue Feb 4th 2025 United Airlines · UA 2211 Depart at 7:55pm from Chicago (ORD) Fly for 4h 34m Arrive at 10:29pm in Seattle (SEA)
Book Flight
USD 247
5:05pm - 10:29pm
Fri Feb 7th
8h 24m
Boston (BOS) → Seattle (SEA)
1 Stop
Fri Feb 7th 2025 United Airlines · UA 2040 Depart at 5:05pm from Boston (BOS) Fly for 2h 47m Arrive at 6:52pm in Chicago (ORD)
Layover in Chicago for 1h 3m
Fri Feb 7th 2025 United Airlines · UA 2211 Depart at 7:55pm from Chicago (ORD) Fly for 4h 34m Arrive at 10:29pm in Seattle (SEA)
Book Flight
USD 247
5:05pm - 10:29pm
Sun Feb 9th
8h 24m
Boston (BOS) → Seattle (SEA)
1 Stop
Sun Feb 9th 2025 United Airlines · UA 2040 Depart at 5:05pm from Boston (BOS) Fly for 2h 47m Arrive at 6:52pm in Chicago (ORD)
Layover in Chicago for 1h 3m
Sun Feb 9th 2025 United Airlines · UA 2211 Depart at 7:55pm from Chicago (ORD) Fly for 4h 34m Arrive at 10:29pm in Seattle (SEA)
Book Flight
USD 247
5:05pm - 10:29pm
Mon Feb 3rd
8h 24m
Boston (BOS) → Seattle (SEA)
1 Stop
Mon Feb 3rd 2025 United Airlines · UA 2040 Depart at 5:05pm from Boston (BOS) Fly for 2h 47m Arrive at 6:52pm in Chicago (ORD)
Layover in Chicago for 1h 3m
Mon Feb 3rd 2025 United Airlines · UA 2211 Depart at 7:55pm from Chicago (ORD) Fly for 4h 34m Arrive at 10:29pm in Seattle (SEA)
Book Flight
USD 247
5:05pm - 10:29pm
Sun Feb 2nd
8h 24m
Boston (BOS) → Seattle (SEA)
1 Stop
Sun Feb 2nd 2025 United Airlines · UA 2040 Depart at 5:05pm from Boston (BOS) Fly for 2h 47m Arrive at 6:52pm in Chicago (ORD)
Layover in Chicago for 1h 3m
Sun Feb 2nd 2025 United Airlines · UA 2211 Depart at 7:55pm from Chicago (ORD) Fly for 4h 34m Arrive at 10:29pm in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:26am
Sun Feb 2nd
8h 26m
Boston (BOS) → Seattle (SEA)
1 Stop
Sun Feb 2nd 2025 United Airlines · UA 1785 Depart at 6:00am from Boston (BOS) Fly for 1h 34m Arrive at 7:34am in Washington, D.C. (IAD)
Layover in Washington, D.C. for 1h 1m
Sun Feb 2nd 2025 United Airlines · UA 1964 Depart at 8:35am from Washington, D.C. (IAD) Fly for 5h 51m Arrive at 11:26am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:26am
Mon Feb 3rd
8h 26m
Boston (BOS) → Seattle (SEA)
1 Stop
Mon Feb 3rd 2025 United Airlines · UA 1785 Depart at 6:00am from Boston (BOS) Fly for 1h 34m Arrive at 7:34am in Washington, D.C. (IAD)
Layover in Washington, D.C. for 1h 1m
Mon Feb 3rd 2025 United Airlines · UA 1964 Depart at 8:35am from Washington, D.C. (IAD) Fly for 5h 51m Arrive at 11:26am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:26am
Wed Feb 5th
8h 26m
Boston (BOS) → Seattle (SEA)
1 Stop
Wed Feb 5th 2025 United Airlines · UA 1785 Depart at 6:00am from Boston (BOS) Fly for 1h 34m Arrive at 7:34am in Washington, D.C. (IAD)
Layover in Washington, D.C. for 1h 1m
Wed Feb 5th 2025 United Airlines · UA 1964 Depart at 8:35am from Washington, D.C. (IAD) Fly for 5h 51m Arrive at 11:26am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:26am
Sun Feb 9th
8h 26m
Boston (BOS) → Seattle (SEA)
1 Stop
Sun Feb 9th 2025 United Airlines · UA 1785 Depart at 6:00am from Boston (BOS) Fly for 1h 34m Arrive at 7:34am in Washington, D.C. (IAD)
Layover in Washington, D.C. for 1h 1m
Sun Feb 9th 2025 United Airlines · UA 1964 Depart at 8:35am from Washington, D.C. (IAD) Fly for 5h 51m Arrive at 11:26am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:26am
Tue Feb 4th
8h 26m
Boston (BOS) → Seattle (SEA)
1 Stop
Tue Feb 4th 2025 United Airlines · UA 1785 Depart at 6:00am from Boston (BOS) Fly for 1h 34m Arrive at 7:34am in Washington, D.C. (IAD)
Layover in Washington, D.C. for 1h 1m
Tue Feb 4th 2025 United Airlines · UA 1964 Depart at 8:35am from Washington, D.C. (IAD) Fly for 5h 51m Arrive at 11:26am in Seattle (SEA)
Book Flight
USD 247
6:00am - 11:26am
Fri Feb 7th
8h 26m
Boston (BOS) → Seattle (SEA)
1 Stop
Fri Feb 7th 2025 United Airlines · UA 1785 Depart at 6:00am from Boston (BOS) Fly for 1h 34m Arrive at 7:34am in Washington, D.C. (IAD)
Layover in Washington, D.C. for 1h 1m
Fri Feb 7th 2025 United Airlines · UA 1964 Depart at 8:35am from Washington, D.C. (IAD) Fly for 5h 51m Arrive at 11:26am in Seattle (SEA)
Book Flight
USD 249
7:00am - 10:23am
Sun Feb 9th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 9th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 280
5:00pm - 8:23pm
Sun Feb 2nd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 2nd 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 280
5:00pm - 8:23pm
Thu Feb 13th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 13th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 280
5:00pm - 8:23pm
Mon Feb 17th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 17th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 280
7:00am - 10:23am
Thu Feb 13th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Thu Feb 13th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 280
11:00am - 2:23pm
Sat Feb 22nd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 22nd 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 280
5:00pm - 8:23pm
Sat Feb 22nd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 22nd 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 280
11:00am - 2:23pm
Mon Feb 17th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 17th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 280
7:00am - 10:23am
Sun Feb 23rd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 23rd 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 280
7:00am - 10:23am
Mon Feb 17th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Mon Feb 17th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 281
5:00pm - 8:23pm
Sun Feb 23rd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 23rd 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 281
11:00am - 2:23pm
Sun Feb 23rd
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 23rd 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 334
5:00pm - 8:23pm
Sun Feb 9th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 9th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 376
11:00am - 2:23pm
Sun Feb 16th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 16th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 376
7:00am - 10:23am
Fri Feb 14th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 14th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 379
7:00am - 10:23am
Sun Feb 16th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 16th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
Book Flight
USD 379
5:00pm - 8:23pm
Sun Feb 16th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sun Feb 16th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 429
5:00pm - 8:23pm
Fri Feb 14th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 14th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 429
11:00am - 2:23pm
Fri Feb 14th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Fri Feb 14th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 429
5:00pm - 8:23pm
Sat Feb 15th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 15th 2025 Alaska Airlines · AS 306 Depart at 5:00pm from Boston (BOS) Fly for 6h 23m Arrive at 8:23pm in Seattle (SEA)
Book Flight
USD 488
11:00am - 2:23pm
Sat Feb 15th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 15th 2025 Alaska Airlines · AS 537 Depart at 11:00am from Boston (BOS) Fly for 6h 23m Arrive at 2:23pm in Seattle (SEA)
Book Flight
USD 488
7:00am - 10:23am
Sat Feb 15th
6h 23m
Boston (BOS) → Seattle (SEA)
Direct
Sat Feb 15th 2025 Alaska Airlines · AS 459 Depart at 7:00am from Boston (BOS) Fly for 6h 23m Arrive at 10:23am in Seattle (SEA)
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.

@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

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

One Way Flights from Boston to Seattle (BOS to SEA)

Sarah Belizaire

John.

ANDY TRAVELS

Travel With Bender

Latest One Way Flight Searches

Cheap Flight Search Tips

Why I Built FlightList