All airlines flying from Ontario, Los Angeles (ONT) to Seattle-Tacoma (SEA).
| FLIGHT SCHEDULE |
|---|
| Direct Codeshare Flights: |
| Mon,Fri,Sun
06:00
Ontario, Los Angeles (ONT) 2
08:54
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 (73J) 2:54 Effective 2026-01-16 through 2026-01-25 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Mon,Thu
06:00
Ontario, Los Angeles (ONT) 2
08:54
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 MAX 9 (7M9) 2:54 Effective 2026-01-22 through 2026-01-26 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Thu
06:00
Ontario, Los Angeles (ONT) 2
08:54
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 (73J) 2:54 Effective 2026-01-29 through 2026-02-05 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Mon,Fri,Sun
06:00
Ontario, Los Angeles (ONT) 2
08:54
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 MAX 9 (7M9) 2:54 Effective 2026-01-30 through 2026-02-02 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Mon,Fri,Sun
06:00
Ontario, Los Angeles (ONT) 2
08:54
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 (73J) 2:54 Effective 2026-02-06 through 2026-02-09 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Daily
06:00
Ontario, Los Angeles (ONT) 2
08:50
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 (73J) 2:50 Effective 2026-03-18 through 2026-05-12 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Daily
06:00
Ontario, Los Angeles (ONT) 2
08:42
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 (73J) 2:42 Effective 2026-05-13 through 2026-06-09 Codeshare flight, operated by Alaska Airlines.(AS 599) |
| Daily
06:00
Ontario, Los Angeles (ONT) 2
08:44
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 (73J) 2:44 Effective from 2026-06-10 Codeshare flight, operated by Alaska Airlines.(AS 532) |
| Mon-Thu,Sat
06:14
Ontario, Los Angeles (ONT) 2
09:09
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 MAX 9 (7M9) 2:55 Effective 2026-02-12 through 2026-02-18 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Thu,Fri,Sun
06:14
Ontario, Los Angeles (ONT) 2
09:09
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 (73J) 2:55 Effective 2026-02-13 through 2026-02-26 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Mon-Wed,Fri,Sat
06:14
Ontario, Los Angeles (ONT) 2
09:09
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 MAX 9 (7M9) 2:55 Effective 2026-02-21 through 2026-03-07 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Thu,Sun
06:14
Ontario, Los Angeles (ONT) 2
09:09
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 (73J) 2:55 Effective 2026-03-01 through 2026-03-05 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Mon-Wed,Fri-Sun
06:14
Ontario, Los Angeles (ONT) 2
09:09
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 MAX 9 (7M9) 2:55 Effective 2026-03-08 through 2026-03-16 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Tue,Thu
06:14
Ontario, Los Angeles (ONT) 2
09:09
Seattle-Tacoma (SEA) JAL JL 6389 Non-stop Boeing 737 (73J) 2:55 Effective 2026-03-12 through 2026-03-17 Codeshare flight, operated by Alaska Airlines.(AS 607) |
| Mon
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6555 Non-stop Embraer EMB 175 (E7W) 3:00 Operates only on 2026-08-10 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Tue,Thu
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6556 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-06-30 through 2026-07-02 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Mon
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6559 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-06-29 through 2026-07-06 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Mon
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6559 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-08-17 through 2026-08-24 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Tue,Thu
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6579 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-08-04 through 2026-08-06 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Tue,Thu
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6626 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-07-07 through 2026-07-30 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Wed,Sun
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6628 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-07-01 through 2026-07-05 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Mon
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6628 Non-stop Embraer EMB 175 (E7W) 3:00 Operates only on 2026-07-27 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Sun
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6648 Non-stop Embraer EMB 175 (E7W) 3:00 Operates only on 2026-06-28 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Mon
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6665 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-07-13 through 2026-07-20 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Mon
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6665 Non-stop Embraer EMB 175 (E7W) 3:00 Operates only on 2026-08-03 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Wed
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6710 Non-stop Embraer EMB 175 (E7W) 3:00 Operates only on 2026-07-08 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Daily
06:00
Ontario, Los Angeles (ONT) 2
08:55
Seattle-Tacoma (SEA) KLM KL 6721 Non-stop Embraer EMB 175 (E7W) 2:55 Effective 2026-03-29 through 2026-04-12 Codeshare flight, operated by Delta Air Lines.(DL 4042) |
| Daily
07:00
Ontario, Los Angeles (ONT) 2
10:01
Seattle-Tacoma (SEA) KLM KL 6721 Non-stop Airbus A220-300 (223) 3:01 Effective 2026-04-13 through 2026-05-06 Codeshare flight, operated by Delta Air Lines.(DL 1071) |
| Daily
07:00
Ontario, Los Angeles (ONT) 2
10:01
Seattle-Tacoma (SEA) KLM KL 6721 Non-stop Embraer EMB 175 (E7W) 3:01 Effective 2026-05-07 through 2026-10-05 Codeshare flight, operated by Delta Air Lines.(DL 3816) |
| Daily
07:00
Ontario, Los Angeles (ONT) 2
10:05
Seattle-Tacoma (SEA) KLM KL 6721 Non-stop Embraer EMB 175 (E7W) 3:05 Effective 2026-10-06 through 2026-10-24 Codeshare flight, operated by Delta Air Lines.(DL 3816) |
| Wed
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6860 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-07-22 through 2026-07-29 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Mon,Fri-Sun
06:00
Ontario, Los Angeles (ONT) 2
08:55
Seattle-Tacoma (SEA) WestJet WS 6921 Non-stop Embraer EMB 175 (E7W) 2:55 Effective 2026-03-08 through 2026-04-12 Codeshare flight, operated by Delta Air Lines.(DL 4042) |
| Mon,Fri-Sun
06:38
Ontario, Los Angeles (ONT) 2
09:45
Seattle-Tacoma (SEA) WestJet WS 6921 Non-stop Embraer EMB 175 (E7W) 3:07 Valid until 2026-01-04 Codeshare flight, operated by Delta Air Lines.(DL 4042) |
| Daily
07:30
Ontario, Los Angeles (ONT) 2
10:36
Seattle-Tacoma (SEA) WestJet WS 6921 Non-stop Embraer EMB 175 (E7W) 3:06 Effective 2026-01-05 through 2026-01-19 Codeshare flight, operated by Delta Air Lines.(DL 4042) |
| Mon,Thu-Sun
07:30
Ontario, Los Angeles (ONT) 2
10:36
Seattle-Tacoma (SEA) WestJet WS 6921 Non-stop Embraer EMB 175 (E7W) 3:06 Effective 2026-01-22 through 2026-02-09 Codeshare flight, operated by Delta Air Lines.(DL 4042) |
| Daily
07:30
Ontario, Los Angeles (ONT) 2
10:34
Seattle-Tacoma (SEA) WestJet WS 6921 Non-stop Embraer EMB 175 (E7W) 3:04 Effective 2026-02-12 through 2026-03-07 Codeshare flight, operated by Delta Air Lines.(DL 4042) |
| Wed
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6933 Non-stop Embraer EMB 175 (E7W) 3:00 Operates only on 2026-07-15 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Daily
11:55
Ontario, Los Angeles (ONT) 2
14:56
Seattle-Tacoma (SEA) KLM KL 6941 Non-stop Embraer EMB 175 (E7W) 3:01 Effective 2026-04-13 through 2026-10-05 Codeshare flight, operated by Delta Air Lines.(DL 4070) |
| Daily
11:55
Ontario, Los Angeles (ONT) 2
14:58
Seattle-Tacoma (SEA) KLM KL 6941 Non-stop Embraer EMB 175 (E7W) 3:03 Effective 2026-10-06 through 2026-10-24 Codeshare flight, operated by Delta Air Lines.(DL 4070) |
| Daily
11:59
Ontario, Los Angeles (ONT) 2
14:55
Seattle-Tacoma (SEA) KLM KL 6941 Non-stop Embraer EMB 175 (E7W) 2:56 Effective 2026-03-29 through 2026-04-12 Codeshare flight, operated by Delta Air Lines.(DL 4070) |
| Sun
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6961 Non-stop Embraer EMB 175 (E7W) 3:00 Operates only on 2026-07-26 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Wed
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 6993 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-08-05 through 2026-08-26 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Fri,Sun
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 7013 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-08-14 through 2026-08-28 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Fri,Sun
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 7092 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-08-07 through 2026-08-09 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Fri,Sun
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 7110 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-07-31 through 2026-08-02 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Fri
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 7174 Non-stop Embraer EMB 175 (E7W) 3:00 Operates only on 2026-07-03 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Fri,Sun
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 7179 Non-stop Embraer EMB 175 (E7W) 3:00 Effective 2026-07-10 through 2026-07-19 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Fri
14:00
Ontario, Los Angeles (ONT) 2
17:00
Seattle-Tacoma (SEA) WestJet WS 7250 Non-stop Embraer EMB 175 (E7W) 3:00 Operates only on 2026-07-24 Codeshare flight, operated by Delta Air Lines.(DL 3819) |
| Mon,Fri-Sun
07:00
Ontario, Los Angeles (ONT) 2
10:01
Seattle-Tacoma (SEA) WestJet WS 7523 Non-stop Airbus A220-300 (223) 3:01 Effective 2026-04-13 through 2026-04-25 Codeshare flight, operated by Delta Air Lines.(DL 1071) |
| Mon,Tue,Thu,Sat
07:00
Ontario, Los Angeles (ONT) 2
10:01
Seattle-Tacoma (SEA) WestJet WS 7523 Non-stop Airbus A220-300 (223) 3:01 Effective 2026-04-27 through 2026-05-05 Codeshare flight, operated by Delta Air Lines.(DL 1071) |
- A domestic route departing from the Ontario, Los Angeles airport (ONT) and arriving at Seattle-Tacoma airport (SEA).
- 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 2:40 and 3:07.
