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One Way Flights from Chicago to Ontario (CHI to ONT)

Discover alternate routes & cheap one way flights from Chicago to Ontario (CHI to ONT) within a departure date range.

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USD 326
4:38pm - 8:30pm
Sun Feb 25th
29h 52m
Chicago (RFD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Allegiant Air · G4 1362 Depart at 4:38pm from Chicago (RFD) Fly for 2h 43m Arrive at 8:21pm in Sarasota (SRQ)
Layover in Sarasota for 13h 39m
Mon Feb 26th 2024 Allegiant Air · G4 2998 Depart at 10:00am from Sarasota (SRQ) Fly for 2h 3m Arrive at 11:03am in Nashville (BNA)
Layover in Nashville for 7h 7m
Mon Feb 26th 2024 Ravn Alaska · 7H 702 Depart at 6:10pm from Nashville (BNA) Fly for 4h 20m Arrive at 8:30pm in Ontario (ONT)
Book Flight
USD 330
7:10am - 12:42pm
Sun Feb 25th
7h 32m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 2628 Depart at 7:10am from Chicago (ORD) Fly for 2h 59m Arrive at 9:09am in Denver (DEN)
Layover in Denver for 2h 6m
Sun Feb 25th 2024 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 27m Arrive at 12:42pm in Ontario (ONT)
Book Flight
USD 348
9:23pm - 7:37am
Sun Feb 25th
36h 14m
Chicago (MDW) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Allegiant Air · G4 1445 Depart at 9:23pm from Chicago (MDW) Fly for 2h 15m Arrive at 11:38pm in Destin (VPS)
Layover in Destin for 21h 13m
Mon Feb 26th 2024 Allegiant Air · G4 2 Depart at 8:51pm from Destin (VPS) Fly for 4h 37m Arrive at 11:28pm in Las Vegas (LAS)
Layover in Las Vegas for 7h 2m
Tue Feb 27th 2024 Frontier Airlines · F9 1283 Depart at 6:30am from Las Vegas (LAS) Fly for 1h 7m Arrive at 7:37am in Ontario (ONT)
Book Flight
USD 363
10:27pm - 7:37am
Sun Feb 25th
35h 10m
Chicago (MDW) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Frontier Airlines · F9 2945 Depart at 10:27pm from Chicago (MDW) Fly for 2h 56m Arrive at 12:23am in Denver (DEN)
Layover in Denver for 7h 12m
Mon Feb 26th 2024 Frontier Airlines · F9 1509 Depart at 7:35am from Denver (DEN) Fly for 2h 7m Arrive at 8:42am in Las Vegas (LAS)
Layover in Las Vegas for 21h 48m
Tue Feb 27th 2024 Frontier Airlines · F9 1283 Depart at 6:30am from Las Vegas (LAS) Fly for 1h 7m Arrive at 7:37am in Ontario (ONT)
Book Flight
USD 384
8:45am - 12:42pm
Sun Feb 25th
5h 57m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 2677 Depart at 8:45am from Chicago (ORD) Fly for 2h 50m Arrive at 10:35am in Denver (DEN)
Layover in Denver for 0h 40m
Sun Feb 25th 2024 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 27m Arrive at 12:42pm in Ontario (ONT)
Book Flight
USD 420
10:40pm - 8:30pm
Sun Feb 25th
23h 50m
Chicago (ORD) → Ontario (ONT)
3 Stops
Sun Feb 25th 2024 Spirit Airlines · NK 635 Depart at 10:40pm from Chicago (ORD) Fly for 2h 5m Arrive at 1:45am in Atlanta (ATL)
Layover in Atlanta for 6h 37m
Mon Feb 26th 2024 Spirit Airlines · NK 1209 Depart at 8:22am from Atlanta (ATL) Fly for 1h 30m Arrive at 9:52am in Orlando (MCO)
Layover in Orlando for 4h 30m
Mon Feb 26th 2024 Spirit Airlines · NK 3170 Depart at 2:22pm from Orlando (MCO) Fly for 2h 8m Arrive at 3:30pm in Nashville (BNA)
Layover in Nashville for 2h 40m
Mon Feb 26th 2024 Ravn Alaska · 7H 702 Depart at 6:10pm from Nashville (BNA) Fly for 4h 20m Arrive at 8:30pm in Ontario (ONT)
Book Flight
USD 421
10:27pm - 5:00pm
Sun Feb 25th
20h 33m
Chicago (MDW) → Ontario (ONT)
3 Stops
Sun Feb 25th 2024 Frontier Airlines · F9 2945 Depart at 10:27pm from Chicago (MDW) Fly for 2h 56m Arrive at 12:23am in Denver (DEN)
Layover in Denver for 5h 37m
Mon Feb 26th 2024 Frontier Airlines · F9 1324 Depart at 6:00am from Denver (DEN) Fly for 2h 13m Arrive at 9:13am in Dallas (DFW)
Layover in Dallas for 4h 15m
Mon Feb 26th 2024 Frontier Airlines · F9 1961 Depart at 1:28pm from Dallas (DFW) Fly for 3h 10m Arrive at 2:38pm in Las Vegas (LAS)
Layover in Las Vegas for 1h 15m
Mon Feb 26th 2024 Frontier Airlines · F9 2231 Depart at 3:53pm from Las Vegas (LAS) Fly for 1h 7m Arrive at 5:00pm in Ontario (ONT)
Book Flight
USD 421
9:31pm - 5:00pm
Sun Feb 25th
21h 29m
Chicago (ORD) → Ontario (ONT)
3 Stops
Sun Feb 25th 2024 Frontier Airlines · F9 1596 Depart at 9:31pm from Chicago (ORD) Fly for 2h 13m Arrive at 12:44am in Atlanta (ATL)
Layover in Atlanta for 5h 16m
Mon Feb 26th 2024 Frontier Airlines · F9 2931 Depart at 6:00am from Atlanta (ATL) Fly for 2h 42m Arrive at 7:42am in Dallas (DFW)
Layover in Dallas for 5h 46m
Mon Feb 26th 2024 Frontier Airlines · F9 1961 Depart at 1:28pm from Dallas (DFW) Fly for 3h 10m Arrive at 2:38pm in Las Vegas (LAS)
Layover in Las Vegas for 1h 15m
Mon Feb 26th 2024 Frontier Airlines · F9 2231 Depart at 3:53pm from Las Vegas (LAS) Fly for 1h 7m Arrive at 5:00pm in Ontario (ONT)
Book Flight
USD 421
9:31pm - 11:33pm
Sun Feb 25th
28h 2m
Chicago (ORD) → Ontario (ONT)
3 Stops
Sun Feb 25th 2024 Frontier Airlines · F9 1596 Depart at 9:31pm from Chicago (ORD) Fly for 2h 13m Arrive at 12:44am in Atlanta (ATL)
Layover in Atlanta for 5h 16m
Mon Feb 26th 2024 Frontier Airlines · F9 2931 Depart at 6:00am from Atlanta (ATL) Fly for 2h 42m Arrive at 7:42am in Dallas (DFW)
Layover in Dallas for 11h 32m
Mon Feb 26th 2024 Frontier Airlines · F9 2631 Depart at 7:14pm from Dallas (DFW) Fly for 2h 15m Arrive at 8:29pm in Denver (DEN)
Layover in Denver for 1h 35m
Mon Feb 26th 2024 Frontier Airlines · F9 1499 Depart at 10:04pm from Denver (DEN) Fly for 2h 29m Arrive at 11:33pm in Ontario (ONT)
Book Flight
USD 428
10:40pm - 8:30pm
Sun Feb 25th
23h 50m
Chicago (ORD) → Ontario (ONT)
3 Stops
Sun Feb 25th 2024 Spirit Airlines · NK 635 Depart at 10:40pm from Chicago (ORD) Fly for 2h 5m Arrive at 1:45am in Atlanta (ATL)
Layover in Atlanta for 4h 15m
Mon Feb 26th 2024 Frontier Airlines · F9 1004 Depart at 6:00am from Atlanta (ATL) Fly for 2h 6m Arrive at 8:06am in Philadelphia (PHL)
Layover in Philadelphia for 4h 59m
Mon Feb 26th 2024 Spirit Airlines · NK 2176 Depart at 1:05pm from Philadelphia (PHL) Fly for 2h 28m Arrive at 2:33pm in Nashville (BNA)
Layover in Nashville for 3h 37m
Mon Feb 26th 2024 Ravn Alaska · 7H 702 Depart at 6:10pm from Nashville (BNA) Fly for 4h 20m Arrive at 8:30pm in Ontario (ONT)
Book Flight
USD 497
10:27pm - 1:22pm
Sun Feb 25th
16h 55m
Chicago (MDW) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Frontier Airlines · F9 2945 Depart at 10:27pm from Chicago (MDW) Fly for 2h 56m Arrive at 12:23am in Denver (DEN)
Layover in Denver for 5h 37m
Mon Feb 26th 2024 Frontier Airlines · F9 1324 Depart at 6:00am from Denver (DEN) Fly for 2h 13m Arrive at 9:13am in Dallas (DFW)
Layover in Dallas for 2h 45m
Mon Feb 26th 2024 Frontier Airlines · F9 1405 Depart at 11:58am from Dallas (DFW) Fly for 3h 24m Arrive at 1:22pm in Ontario (ONT)
Book Flight
USD 497
9:31pm - 1:22pm
Sun Feb 25th
17h 51m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Frontier Airlines · F9 1596 Depart at 9:31pm from Chicago (ORD) Fly for 2h 13m Arrive at 12:44am in Atlanta (ATL)
Layover in Atlanta for 5h 16m
Mon Feb 26th 2024 Frontier Airlines · F9 2931 Depart at 6:00am from Atlanta (ATL) Fly for 2h 42m Arrive at 7:42am in Dallas (DFW)
Layover in Dallas for 4h 16m
Mon Feb 26th 2024 Frontier Airlines · F9 1405 Depart at 11:58am from Dallas (DFW) Fly for 3h 24m Arrive at 1:22pm in Ontario (ONT)
Book Flight
USD 503
10:40pm - 5:00pm
Sun Feb 25th
20h 20m
Chicago (ORD) → Ontario (ONT)
3 Stops
Sun Feb 25th 2024 Spirit Airlines · NK 635 Depart at 10:40pm from Chicago (ORD) Fly for 2h 5m Arrive at 1:45am in Atlanta (ATL)
Layover in Atlanta for 4h 15m
Mon Feb 26th 2024 Frontier Airlines · F9 2931 Depart at 6:00am from Atlanta (ATL) Fly for 2h 42m Arrive at 7:42am in Dallas (DFW)
Layover in Dallas for 5h 46m
Mon Feb 26th 2024 Frontier Airlines · F9 1961 Depart at 1:28pm from Dallas (DFW) Fly for 3h 10m Arrive at 2:38pm in Las Vegas (LAS)
Layover in Las Vegas for 1h 15m
Mon Feb 26th 2024 Frontier Airlines · F9 2231 Depart at 3:53pm from Las Vegas (LAS) Fly for 1h 7m Arrive at 5:00pm in Ontario (ONT)
Book Flight
USD 553
6:05pm - 7:52am
Sun Feb 25th
15h 47m
Chicago (MDW) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Frontier Airlines · F9 1735 Depart at 6:05pm from Chicago (MDW) Fly for 4h 15m Arrive at 9:20pm in Phoenix (PHX)
Layover in Phoenix for 2h 4m
Sun Feb 25th 2024 Frontier Airlines · F9 4149 Depart at 11:24pm from Phoenix (PHX) Fly for 1h 20m Arrive at 11:44pm in Las Vegas (LAS)
Layover in Las Vegas for 7h 1m
Mon Feb 26th 2024 Frontier Airlines · F9 1283 Depart at 6:45am from Las Vegas (LAS) Fly for 1h 7m Arrive at 7:52am in Ontario (ONT)
Book Flight
USD 579
10:40pm - 1:22pm
Sun Feb 25th
16h 42m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Spirit Airlines · NK 635 Depart at 10:40pm from Chicago (ORD) Fly for 2h 5m Arrive at 1:45am in Atlanta (ATL)
Layover in Atlanta for 4h 15m
Mon Feb 26th 2024 Frontier Airlines · F9 2931 Depart at 6:00am from Atlanta (ATL) Fly for 2h 42m Arrive at 7:42am in Dallas (DFW)
Layover in Dallas for 4h 16m
Mon Feb 26th 2024 Frontier Airlines · F9 1405 Depart at 11:58am from Dallas (DFW) Fly for 3h 24m Arrive at 1:22pm in Ontario (ONT)
Book Flight
USD 608
3:55pm - 10:25pm
Sun Feb 25th
8h 30m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 1755 Depart at 3:55pm from Chicago (ORD) Fly for 4h 48m Arrive at 6:43pm in San Francisco (SFO)
Layover in San Francisco for 2h 7m
Sun Feb 25th 2024 United Airlines · UA 5311 Depart at 8:50pm from San Francisco (SFO) Fly for 1h 35m Arrive at 10:25pm in Ontario (ONT)
Book Flight
USD 682
6:15am - 8:49am
Sun Feb 25th
28h 34m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 Alaska Airlines · AS 333 Depart at 6:15am from Chicago (ORD) Fly for 4h 41m Arrive at 8:56am in Seattle (SEA)
Layover in Seattle for 21h 23m
Mon Feb 26th 2024 Alaska Airlines · AS 1254 Depart at 6:19am from Seattle (SEA) Fly for 2h 30m Arrive at 8:49am in Ontario (ONT)
Book Flight
USD 686
9:22pm - 8:49pm
Sun Feb 25th
25h 27m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 2621 Depart at 9:22pm from Chicago (ORD) Fly for 1h 1m Arrive at 11:23pm in Indianapolis (IND)
Layover in Indianapolis for 16h 7m
Mon Feb 26th 2024 United Airlines · UA 1422 Depart at 3:30pm from Indianapolis (IND) Fly for 3h 1m Arrive at 4:31pm in Denver (DEN)
Layover in Denver for 2h 56m
Mon Feb 26th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 686
7:45pm - 8:49pm
Sun Feb 25th
27h 4m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 3707 Depart at 7:45pm from Chicago (ORD) Fly for 1h 14m Arrive at 9:59pm in Indianapolis (IND)
Layover in Indianapolis for 17h 31m
Mon Feb 26th 2024 United Airlines · UA 1422 Depart at 3:30pm from Indianapolis (IND) Fly for 3h 1m Arrive at 4:31pm in Denver (DEN)
Layover in Denver for 2h 56m
Mon Feb 26th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 704
8:00am - 8:49am
Sun Feb 25th
26h 49m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 Alaska Airlines · AS 329 Depart at 8:00am from Chicago (ORD) Fly for 4h 40m Arrive at 10:40am in Seattle (SEA)
Layover in Seattle for 19h 39m
Mon Feb 26th 2024 Alaska Airlines · AS 1254 Depart at 6:19am from Seattle (SEA) Fly for 2h 30m Arrive at 8:49am in Ontario (ONT)
Book Flight
USD 709
12:47pm - 10:57pm
Sun Feb 25th
12h 10m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 AeroMéxico · AM 653 Depart at 12:47pm from Chicago (ORD) Fly for 4h 44m Arrive at 5:31pm in Guadalajara (GDL)
Layover in Guadalajara for 4h 10m
Sun Feb 25th 2024 Volaris · Y4 936 Depart at 9:41pm from Guadalajara (GDL) Fly for 3h 16m Arrive at 10:57pm in Ontario (ONT)
Book Flight
USD 731
6:15am - 11:29pm
Sun Feb 25th
19h 14m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 Alaska Airlines · AS 333 Depart at 6:15am from Chicago (ORD) Fly for 4h 41m Arrive at 8:56am in Seattle (SEA)
Layover in Seattle for 11h 59m
Sun Feb 25th 2024 Alaska Airlines · AS 1086 Depart at 8:55pm from Seattle (SEA) Fly for 2h 34m Arrive at 11:29pm in Ontario (ONT)
Book Flight
USD 732
5:30pm - 12:42pm
Sun Feb 25th
21h 12m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 2312 Depart at 5:30pm from Chicago (ORD) Fly for 2h 14m Arrive at 8:44pm in New York (LGA)
Layover in New York for 9h 31m
Mon Feb 26th 2024 United Airlines · UA 2063 Depart at 6:15am from New York (LGA) Fly for 4h 42m Arrive at 8:57am in Denver (DEN)
Layover in Denver for 2h 18m
Mon Feb 26th 2024 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 27m Arrive at 12:42pm in Ontario (ONT)
Book Flight
USD 736
6:15am - 10:09pm
Sun Feb 25th
17h 54m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Alaska Airlines · AS 333 Depart at 6:15am from Chicago (ORD) Fly for 4h 41m Arrive at 8:56am in Seattle (SEA)
Layover in Seattle for 7h 19m
Sun Feb 25th 2024 Alaska Airlines · AS 701 Depart at 4:15pm from Seattle (SEA) Fly for 0h 54m Arrive at 5:09pm in Portland (PDX)
Layover in Portland for 2h 46m
Sun Feb 25th 2024 Alaska Airlines · AS 2300 Depart at 7:55pm from Portland (PDX) Fly for 2h 14m Arrive at 10:09pm in Ontario (ONT)
Book Flight
USD 736
6:15am - 10:09pm
Sun Feb 25th
17h 54m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Alaska Airlines · AS 333 Depart at 6:15am from Chicago (ORD) Fly for 4h 41m Arrive at 8:56am in Seattle (SEA)
Layover in Seattle for 6h 9m
Sun Feb 25th 2024 Alaska Airlines · AS 3309 Depart at 3:05pm from Seattle (SEA) Fly for 0h 54m Arrive at 3:59pm in Portland (PDX)
Layover in Portland for 3h 56m
Sun Feb 25th 2024 Alaska Airlines · AS 2300 Depart at 7:55pm from Portland (PDX) Fly for 2h 14m Arrive at 10:09pm in Ontario (ONT)
Book Flight
USD 749
10:40am - 6:00pm
Sun Feb 25th
9h 20m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 343 Depart at 10:40am from Chicago (ORD) Fly for 4h 57m Arrive at 1:37pm in San Francisco (SFO)
Layover in San Francisco for 2h 48m
Sun Feb 25th 2024 United Airlines · UA 4783 Depart at 4:25pm from San Francisco (SFO) Fly for 1h 35m Arrive at 6:00pm in Ontario (ONT)
Book Flight
USD 750
12:45pm - 6:00pm
Sun Feb 25th
7h 15m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 1878 Depart at 12:45pm from Chicago (ORD) Fly for 4h 55m Arrive at 3:40pm in San Francisco (SFO)
Layover in San Francisco for 0h 45m
Sun Feb 25th 2024 United Airlines · UA 4783 Depart at 4:25pm from San Francisco (SFO) Fly for 1h 35m Arrive at 6:00pm in Ontario (ONT)
Book Flight
USD 753
8:00am - 11:29pm
Sun Feb 25th
17h 29m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 Alaska Airlines · AS 329 Depart at 8:00am from Chicago (ORD) Fly for 4h 40m Arrive at 10:40am in Seattle (SEA)
Layover in Seattle for 10h 15m
Sun Feb 25th 2024 Alaska Airlines · AS 1086 Depart at 8:55pm from Seattle (SEA) Fly for 2h 34m Arrive at 11:29pm in Ontario (ONT)
Book Flight
USD 756
8:03pm - 12:42pm
Sun Feb 25th
18h 39m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 533 Depart at 8:03pm from Chicago (ORD) Fly for 1h 44m Arrive at 9:47pm in Omaha (OMA)
Layover in Omaha for 11h 28m
Mon Feb 26th 2024 United Airlines · UA 512 Depart at 9:15am from Omaha (OMA) Fly for 1h 53m Arrive at 10:08am in Denver (DEN)
Layover in Denver for 1h 7m
Mon Feb 26th 2024 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 27m Arrive at 12:42pm in Ontario (ONT)
Book Flight
USD 758
8:00am - 10:09pm
Sun Feb 25th
16h 9m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Alaska Airlines · AS 329 Depart at 8:00am from Chicago (ORD) Fly for 4h 40m Arrive at 10:40am in Seattle (SEA)
Layover in Seattle for 5h 35m
Sun Feb 25th 2024 Alaska Airlines · AS 701 Depart at 4:15pm from Seattle (SEA) Fly for 0h 54m Arrive at 5:09pm in Portland (PDX)
Layover in Portland for 2h 46m
Sun Feb 25th 2024 Alaska Airlines · AS 2300 Depart at 7:55pm from Portland (PDX) Fly for 2h 14m Arrive at 10:09pm in Ontario (ONT)
Book Flight
USD 761
8:00am - 10:09pm
Sun Feb 25th
16h 9m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 Alaska Airlines · AS 329 Depart at 8:00am from Chicago (ORD) Fly for 4h 40m Arrive at 10:40am in Seattle (SEA)
Layover in Seattle for 4h 25m
Sun Feb 25th 2024 Alaska Airlines · AS 3309 Depart at 3:05pm from Seattle (SEA) Fly for 0h 54m Arrive at 3:59pm in Portland (PDX)
Layover in Portland for 3h 56m
Sun Feb 25th 2024 Alaska Airlines · AS 2300 Depart at 7:55pm from Portland (PDX) Fly for 2h 14m Arrive at 10:09pm in Ontario (ONT)
Book Flight
USD 766
12:55pm - 8:49pm
Sun Feb 25th
9h 54m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 3450 Depart at 12:55pm from Chicago (ORD) Fly for 1h 37m Arrive at 2:32pm in Des Moines (DSM)
Layover in Des Moines for 2h 29m
Sun Feb 25th 2024 United Airlines · UA 2644 Depart at 5:01pm from Des Moines (DSM) Fly for 2h 6m Arrive at 6:07pm in Denver (DEN)
Layover in Denver for 1h 20m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 767
2:32pm - 8:49pm
Sun Feb 25th
8h 17m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 2320 Depart at 2:32pm from Chicago (ORD) Fly for 2h 53m Arrive at 4:25pm in Denver (DEN)
Layover in Denver for 3h 2m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 768
2:00pm - 8:49pm
Sun Feb 25th
8h 49m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 2618 Depart at 2:00pm from Chicago (ORD) Fly for 1h 18m Arrive at 3:18pm in St. Louis (STL)
Layover in St. Louis for 1h 6m
Sun Feb 25th 2024 United Airlines · UA 367 Depart at 4:24pm from St. Louis (STL) Fly for 2h 34m Arrive at 5:58pm in Denver (DEN)
Layover in Denver for 1h 29m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 772
12:55pm - 8:49pm
Sun Feb 25th
9h 54m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 4406 Depart at 12:55pm from Chicago (ORD) Fly for 1h 28m Arrive at 2:23pm in St. Louis (STL)
Layover in St. Louis for 2h 1m
Sun Feb 25th 2024 United Airlines · UA 367 Depart at 4:24pm from St. Louis (STL) Fly for 2h 34m Arrive at 5:58pm in Denver (DEN)
Layover in Denver for 1h 29m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 772
9:02am - 8:49pm
Sun Feb 25th
13h 47m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 2653 Depart at 9:02am from Chicago (ORD) Fly for 1h 23m Arrive at 10:25am in Des Moines (DSM)
Layover in Des Moines for 6h 36m
Sun Feb 25th 2024 United Airlines · UA 2644 Depart at 5:01pm from Des Moines (DSM) Fly for 2h 6m Arrive at 6:07pm in Denver (DEN)
Layover in Denver for 1h 20m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 772
8:05pm - 12:42pm
Sun Feb 25th
18h 37m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 516 Depart at 8:05pm from Chicago (ORD) Fly for 1h 27m Arrive at 9:32pm in Des Moines (DSM)
Layover in Des Moines for 11h 28m
Mon Feb 26th 2024 United Airlines · UA 581 Depart at 9:00am from Des Moines (DSM) Fly for 2h 6m Arrive at 10:06am in Denver (DEN)
Layover in Denver for 1h 9m
Mon Feb 26th 2024 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 27m Arrive at 12:42pm in Ontario (ONT)
Book Flight
USD 773
12:50pm - 8:49pm
Sun Feb 25th
9h 59m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 786 Depart at 12:50pm from Chicago (ORD) Fly for 2h 54m Arrive at 2:44pm in Denver (DEN)
Layover in Denver for 4h 43m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 773
10:37am - 8:49pm
Sun Feb 25th
12h 12m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 2656 Depart at 10:37am from Chicago (ORD) Fly for 2h 54m Arrive at 12:31pm in Denver (DEN)
Layover in Denver for 6h 56m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 773
8:45am - 8:49pm
Sun Feb 25th
14h 4m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 2677 Depart at 8:45am from Chicago (ORD) Fly for 2h 50m Arrive at 10:35am in Denver (DEN)
Layover in Denver for 8h 52m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 773
7:10am - 8:49pm
Sun Feb 25th
15h 39m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 2628 Depart at 7:10am from Chicago (ORD) Fly for 2h 59m Arrive at 9:09am in Denver (DEN)
Layover in Denver for 10h 18m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 773
9:12pm - 12:42pm
Sun Feb 25th
17h 30m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 2419 Depart at 9:12pm from Chicago (ORD) Fly for 2h 48m Arrive at 11:00pm in Denver (DEN)
Layover in Denver for 12h 15m
Mon Feb 26th 2024 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 27m Arrive at 12:42pm in Ontario (ONT)
Book Flight
USD 773
8:00pm - 12:42pm
Sun Feb 25th
18h 42m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 767 Depart at 8:00pm from Chicago (ORD) Fly for 2h 54m Arrive at 9:54pm in Denver (DEN)
Layover in Denver for 13h 21m
Mon Feb 26th 2024 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 27m Arrive at 12:42pm in Ontario (ONT)
Book Flight
USD 778
9:15am - 8:49pm
Sun Feb 25th
13h 34m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 5456 Depart at 9:15am from Chicago (ORD) Fly for 1h 28m Arrive at 10:43am in St. Louis (STL)
Layover in St. Louis for 5h 41m
Sun Feb 25th 2024 United Airlines · UA 367 Depart at 4:24pm from St. Louis (STL) Fly for 2h 34m Arrive at 5:58pm in Denver (DEN)
Layover in Denver for 1h 29m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 778
8:20pm - 12:42pm
Sun Feb 25th
18h 22m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 4185 Depart at 8:20pm from Chicago (ORD) Fly for 1h 31m Arrive at 9:51pm in St. Louis (STL)
Layover in St. Louis for 10h 42m
Mon Feb 26th 2024 United Airlines · UA 496 Depart at 8:33am from St. Louis (STL) Fly for 2h 35m Arrive at 10:08am in Denver (DEN)
Layover in Denver for 1h 7m
Mon Feb 26th 2024 United Airlines · UA 430 Depart at 11:15am from Denver (DEN) Fly for 2h 27m Arrive at 12:42pm in Ontario (ONT)
Book Flight
USD 793
12:45pm - 8:49pm
Sun Feb 25th
10h 4m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 1310 Depart at 12:45pm from Chicago (ORD) Fly for 1h 33m Arrive at 2:18pm in Minneapolis (MSP)
Layover in Minneapolis for 2h 31m
Sun Feb 25th 2024 United Airlines · UA 467 Depart at 4:49pm from Minneapolis (MSP) Fly for 2h 21m Arrive at 6:10pm in Denver (DEN)
Layover in Denver for 1h 17m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 799
7:15am - 8:49pm
Sun Feb 25th
15h 34m
Chicago (ORD) → Ontario (ONT)
2 Stops
Sun Feb 25th 2024 United Airlines · UA 2232 Depart at 7:15am from Chicago (ORD) Fly for 1h 33m Arrive at 8:48am in Minneapolis (MSP)
Layover in Minneapolis for 8h 1m
Sun Feb 25th 2024 United Airlines · UA 467 Depart at 4:49pm from Minneapolis (MSP) Fly for 2h 21m Arrive at 6:10pm in Denver (DEN)
Layover in Denver for 1h 17m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
Book Flight
USD 831
9:00am - 6:00pm
Sun Feb 25th
11h 0m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 2041 Depart at 9:00am from Chicago (ORD) Fly for 4h 45m Arrive at 11:45am in San Francisco (SFO)
Layover in San Francisco for 4h 40m
Sun Feb 25th 2024 United Airlines · UA 4783 Depart at 4:25pm from San Francisco (SFO) Fly for 1h 35m Arrive at 6:00pm in Ontario (ONT)
Book Flight
USD 831
10:40am - 10:25pm
Sun Feb 25th
13h 45m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 343 Depart at 10:40am from Chicago (ORD) Fly for 4h 57m Arrive at 1:37pm in San Francisco (SFO)
Layover in San Francisco for 7h 13m
Sun Feb 25th 2024 United Airlines · UA 5311 Depart at 8:50pm from San Francisco (SFO) Fly for 1h 35m Arrive at 10:25pm in Ontario (ONT)
Book Flight
USD 831
6:00am - 6:00pm
Sun Feb 25th
14h 0m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 336 Depart at 6:00am from Chicago (ORD) Fly for 4h 50m Arrive at 8:50am in San Francisco (SFO)
Layover in San Francisco for 7h 35m
Sun Feb 25th 2024 United Airlines · UA 4783 Depart at 4:25pm from San Francisco (SFO) Fly for 1h 35m Arrive at 6:00pm in Ontario (ONT)
Book Flight
USD 831
8:15pm - 9:59am
Sun Feb 25th
15h 44m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 1484 Depart at 8:15pm from Chicago (ORD) Fly for 4h 57m Arrive at 11:12pm in San Francisco (SFO)
Layover in San Francisco for 9h 13m
Mon Feb 26th 2024 United Airlines · UA 5740 Depart at 8:25am from San Francisco (SFO) Fly for 1h 34m Arrive at 9:59am in Ontario (ONT)
Book Flight
USD 929
3:46pm - 10:09pm
Sun Feb 25th
8h 23m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 1698 Depart at 3:46pm from Chicago (ORD) Fly for 4h 36m Arrive at 6:22pm in Portland (PDX)
Layover in Portland for 1h 33m
Sun Feb 25th 2024 Alaska Airlines · AS 2300 Depart at 7:55pm from Portland (PDX) Fly for 2h 14m Arrive at 10:09pm in Ontario (ONT)
Book Flight
USD 959
12:45pm - 6:00pm
Sun Feb 25th
7h 15m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 1878 Depart at 12:45pm from Chicago (ORD) Fly for 4h 55m Arrive at 3:40pm in San Francisco (SFO)
Layover in San Francisco for 0h 45m
Sun Feb 25th 2024 United Airlines · UA 4783 Depart at 4:25pm from San Francisco (SFO) Fly for 1h 35m Arrive at 6:00pm in Ontario (ONT)
Book Flight
USD 1011
4:10pm - 8:49pm
Sun Feb 25th
6h 39m
Chicago (ORD) → Ontario (ONT)
1 Stop
Sun Feb 25th 2024 United Airlines · UA 323 Depart at 4:10pm from Chicago (ORD) Fly for 2h 53m Arrive at 6:03pm in Denver (DEN)
Layover in Denver for 1h 24m
Sun Feb 25th 2024 United Airlines · UA 1574 Depart at 7:27pm from Denver (DEN) Fly for 2h 22m Arrive at 8:49pm in Ontario (ONT)
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 Chicago to Ontario (CHI to ONT)

Sarah Belizaire

John.

ANDY TRAVELS

Travel With Bender

Latest One Way Flight Searches

Cheap Flight Search Tips

Why I Built FlightList