All airlines flying from Seattle-Tacoma (SEA) to Ontario, Los Angeles (ONT).
| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Daily
19:55
Seattle-Tacoma (SEA)
22:39
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 378 Non-stop Boeing 737 (73J) 2:44 Effective from 2026-08-19 |
| Daily
21:30
Seattle-Tacoma (SEA)
00:14
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 467 Non-stop Boeing 737 (73J) 2:44 Effective 2026-06-10 through 2026-08-18 The flight arrives 1 day after departure. |
| Daily
20:15
Seattle-Tacoma (SEA)
22:46
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 469 Non-stop Boeing 737 (73J) 2:31 Effective 2026-05-13 through 2026-06-09 |
| Wed
20:05
Seattle-Tacoma (SEA)
22:37
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 489 Non-stop Boeing 737 (73J) 2:32 Operates only on 2026-03-18 |
| Daily
20:05
Seattle-Tacoma (SEA)
22:38
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 489 Non-stop Boeing 737 (73J) 2:33 Effective 2026-03-19 through 2026-05-12 |
| Mon,Thu,Fri,Sun
21:20
Seattle-Tacoma (SEA)
23:56
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 489 Non-stop Boeing 737 (73J) 2:36 Effective 2026-01-08 through 2026-01-26 |
| Thu
21:20
Seattle-Tacoma (SEA)
23:56
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 489 Non-stop Boeing 737 MAX 9 (7M9) 2:36 Operates only on 2026-01-29 |
| Mon,Thu,Fri,Sun
21:20
Seattle-Tacoma (SEA)
23:56
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 489 Non-stop Boeing 737 (73J) 2:36 Effective 2026-01-30 through 2026-02-08 |
| Mon
21:20
Seattle-Tacoma (SEA)
23:56
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 489 Non-stop Boeing 737-800 (73H) 2:36 Operates only on 2026-02-09 |
| Mon,Thu
21:35
Seattle-Tacoma (SEA)
00:14
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 489 Non-stop Boeing 737 MAX 9 (7M9) 2:39 Valid until 2026-01-01 The flight arrives 1 day after departure. |
| Mon-Wed,Fri,Sun
21:35
Seattle-Tacoma (SEA)
00:14
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 489 Non-stop Boeing 737 (73J) 2:39 Valid until 2026-01-06 The flight arrives 1 day after departure. |
| Sat
21:35
Seattle-Tacoma (SEA)
00:14
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 489 Non-stop Boeing 737-800 (73H) 2:39 Operates only on 2026-01-03 The flight arrives 1 day after departure. |
| Daily
15:25
Seattle-Tacoma (SEA)
18:03
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 529 Non-stop Boeing 737 (73J) 2:38 Effective 2026-06-10 through 2026-08-18 |
| Daily
15:35
Seattle-Tacoma (SEA)
18:13
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 529 Non-stop Boeing 737 (73J) 2:38 Effective from 2026-08-19 |
| Fri
15:44
Seattle-Tacoma (SEA)
18:19
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 MAX 9 (7M9) 2:35 Operates only on 2026-01-02 |
| Wed
15:45
Seattle-Tacoma (SEA)
18:17
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 (73J) 2:32 Operates only on 2026-03-18 |
| Daily
15:45
Seattle-Tacoma (SEA)
18:19
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 (73J) 2:34 Effective 2026-03-19 through 2026-05-12 |
| Mon,Tue
15:50
Seattle-Tacoma (SEA)
18:25
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 (73J) 2:35 Valid until 2026-01-05 |
| Sun
15:50
Seattle-Tacoma (SEA)
18:25
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 MAX 9 (7M9) 2:35 Operates only on 2026-01-04 |
| Tue
15:50
Seattle-Tacoma (SEA)
18:25
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737-800 (73H) 2:35 Operates only on 2026-01-06 |
| Tue,Wed,Sat
18:00
Seattle-Tacoma (SEA)
20:36
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 (73J) 2:36 Effective 2026-01-07 through 2026-01-28 |
| Sat
18:00
Seattle-Tacoma (SEA)
20:36
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 MAX 9 (7M9) 2:36 Operates only on 2026-01-31 |
| Tue,Wed,Sat
18:00
Seattle-Tacoma (SEA)
20:36
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 (73J) 2:36 Effective 2026-02-03 through 2026-02-10 |
| Wed
18:00
Seattle-Tacoma (SEA)
20:36
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 MAX 9 (7M9) 2:36 Operates only on 2026-02-11 |
| Tue,Wed
20:05
Seattle-Tacoma (SEA)
22:44
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 (73J) 2:39 Effective 2026-02-17 through 2026-03-17 |
| Thu
20:56
Seattle-Tacoma (SEA)
23:32
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737-800 (73H) 2:36 Operates only on 2026-02-12 |
| Thu-Sat
20:56
Seattle-Tacoma (SEA)
23:32
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 (73J) 2:36 Effective 2026-02-13 through 2026-02-21 |
| Mon,Sun
20:56
Seattle-Tacoma (SEA)
23:32
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 MAX 9 (7M9) 2:36 Effective 2026-02-15 through 2026-02-23 |
| Mon,Thu,Sun
20:56
Seattle-Tacoma (SEA)
23:32
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 MAX 9 (7M9) 2:36 Effective 2026-02-26 through 2026-03-02 |
| Thu-Sat
20:56
Seattle-Tacoma (SEA)
23:32
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 (73J) 2:36 Effective 2026-02-27 through 2026-03-06 |
| Mon,Sat,Sun
20:56
Seattle-Tacoma (SEA)
23:32
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 MAX 9 (7M9) 2:36 Effective 2026-03-07 through 2026-03-16 |
| Thu
20:56
Seattle-Tacoma (SEA)
23:32
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737-800 (73H) 2:36 Operates only on 2026-03-12 |
| Fri
20:56
Seattle-Tacoma (SEA)
23:32
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 592 Non-stop Boeing 737 (73J) 2:36 Operates only on 2026-03-13 |
| Daily
15:53
Seattle-Tacoma (SEA)
18:25
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 598 Non-stop Boeing 737 (73J) 2:32 Effective 2026-05-13 through 2026-06-09 |
| Thu-Sun
12:30
Seattle-Tacoma (SEA)
15:08
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737-800 (73H) 2:38 Effective 2026-02-12 through 2026-02-22 |
| Mon-Wed
12:30
Seattle-Tacoma (SEA)
15:08
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737 (73J) 2:38 Effective 2026-02-16 through 2026-02-18 |
| Mon,Thu-Sun
12:30
Seattle-Tacoma (SEA)
15:08
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737-800 (73H) 2:38 Effective 2026-02-23 through 2026-03-02 |
| Tue,Wed
12:30
Seattle-Tacoma (SEA)
15:08
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737 (73J) 2:38 Effective 2026-02-24 through 2026-02-25 |
| Tue,Thu
12:30
Seattle-Tacoma (SEA)
15:08
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737 MAX 9 (7M9) 2:38 Effective 2026-03-03 through 2026-03-05 |
| Tue,Wed,Sat,Sun
12:30
Seattle-Tacoma (SEA)
15:08
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737 (73J) 2:38 Effective 2026-03-04 through 2026-03-15 |
| Mon,Thu,Fri
12:30
Seattle-Tacoma (SEA)
15:08
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737-800 (73H) 2:38 Effective 2026-03-06 through 2026-03-16 |
| Tue
12:30
Seattle-Tacoma (SEA)
15:08
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737 MAX 9 (7M9) 2:38 Operates only on 2026-03-17 |
| Daily
12:31
Seattle-Tacoma (SEA)
15:08
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737-800 (73H) 2:37 Effective 2026-01-07 through 2026-02-11 |
| Mon-Wed,Fri,Sun
13:02
Seattle-Tacoma (SEA)
15:42
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737 (73J) 2:40 Valid until 2026-01-06 |
| Thu
13:02
Seattle-Tacoma (SEA)
15:42
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737 MAX 9 (7M9) 2:40 Operates only on 2026-01-01 |
| Sat
13:02
Seattle-Tacoma (SEA)
15:42
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 664 Non-stop Boeing 737-800 (73H) 2:40 Operates only on 2026-01-03 |
| Daily
13:18
Seattle-Tacoma (SEA)
15:50
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 679 Non-stop Boeing 737 (73J) 2:32 Effective 2026-05-13 through 2026-06-09 |
| Daily
08:26
Seattle-Tacoma (SEA)
10:57
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 705 Non-stop Boeing 737 (73J) 2:31 Effective 2026-05-13 through 2026-06-09 |
| Daily
11:45
Seattle-Tacoma (SEA)
14:33
Ontario, Los Angeles (ONT) 2 Alaska Airlines AS 728 Non-stop Boeing 737 (73J) 2:48 Effective 2026-04-22 through 2026-05-12 |
| Daily
19:55
Seattle-Tacoma (SEA)
22:40
Ontario, Los Angeles (ONT) 2 Delta Air Lines DL 1056 Non-stop Airbus A220-300 (223) 2:45 Effective 2026-04-13 through 2026-05-06 |
- A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Ontario, Los Angeles airport (ONT).
- The flight distance is 956 miles, or 1539 km.
- The timezone of both the departure and the arrival airports is UTC-8 . Current time at both airports is (loading...).
- For direct flights, the flight time varies between 2:31 and 2:54.
