United Airlines flights from Ontario, Los Angeles (ONT) to Seattle-Tacoma (SEA).

Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
Mon,Tue,Thu,Fri 06:17 Ontario, Los Angeles (ONT) 2 11:46 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A320 (320) 5:29 Effective 2024-09-05 through 2024-09-19
Fri 06:17 Ontario, Los Angeles (ONT) 2 11:46 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A319 (319) 5:29 Operates only on 2024-09-20
Mon-Wed 06:17 Ontario, Los Angeles (ONT) 2 11:46 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A320 (320) 5:29 Effective 2024-09-23 through 2024-09-25
Sun 06:18 Ontario, Los Angeles (ONT) 2 11:36 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A319 (319) 5:18 Operates only on 2024-09-29
Sun 06:18 Ontario, Los Angeles (ONT) 2 11:42 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A320 (320) 5:24 Operates only on 2024-10-06
Sun 06:18 Ontario, Los Angeles (ONT) 2 10:45 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A320 (320) 4:27 Operates only on 2024-10-13
Sun 06:18 Ontario, Los Angeles (ONT) 2 11:42 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Boeing 737 MAX 8 (7M8) 5:24 Operates only on 2024-10-20
Mon-Wed,Sun 06:20 Ontario, Los Angeles (ONT) 2 11:46 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A319 (319) 5:26 Valid until 2024-09-08
Wed,Sun 06:20 Ontario, Los Angeles (ONT) 2 11:46 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A319 (319) 5:26 Effective 2024-09-11 through 2024-09-22
Mon-Sat 07:18 Ontario, Los Angeles (ONT) 2 11:42 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A319 (319) 4:24 Effective 2024-09-26 through 2024-10-11
Mon,Sat 07:18 Ontario, Los Angeles (ONT) 2 11:42 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A320 (320) 4:24 Effective 2024-10-12 through 2024-10-14
Mon-Sat 07:18 Ontario, Los Angeles (ONT) 2 11:42 Seattle-Tacoma (SEA)
United Airlines UA 277 1-stop Airbus A319 (319) 4:24 Effective 2024-10-15 through 2024-10-26
Daily 05:15 Ontario, Los Angeles (ONT) 2 13:57 Seattle-Tacoma (SEA)
United Airlines UA 2246 1-stop Boeing 737-800 (738) 8:42 Effective 2024-12-03 through 2024-12-18




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United Airlines flights from Ontario, Los Angeles (ONT) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
United Airlines UA277
06:17
Ontario, Los Angeles (ONT) 2

11:46
Seattle-Tacoma (SEA)
Effective 2024-09-05 through 2024-09-19
Mon
Tue
Wed
-
Thu
Fri
Sat
-
Sun
-
Duration: 5:29, 1-stop
Airbus A320 (320)
United Airlines UA277
06:17
Ontario, Los Angeles (ONT) 2

11:46
Seattle-Tacoma (SEA)
Operates only on 2024-09-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 5:29, 1-stop
Airbus A319 (319)
United Airlines UA277
06:17
Ontario, Los Angeles (ONT) 2

11:46
Seattle-Tacoma (SEA)
Effective 2024-09-23 through 2024-09-25
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 5:29, 1-stop
Airbus A320 (320)
United Airlines UA277
06:18
Ontario, Los Angeles (ONT) 2

11:36
Seattle-Tacoma (SEA)
Operates only on 2024-09-29
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:18, 1-stop
Airbus A319 (319)
United Airlines UA277
06:18
Ontario, Los Angeles (ONT) 2

11:42
Seattle-Tacoma (SEA)
Operates only on 2024-10-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:24, 1-stop
Airbus A320 (320)
United Airlines UA277
06:18
Ontario, Los Angeles (ONT) 2

10:45
Seattle-Tacoma (SEA)
Operates only on 2024-10-13
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:27, 1-stop
Airbus A320 (320)
United Airlines UA277
06:18
Ontario, Los Angeles (ONT) 2

11:42
Seattle-Tacoma (SEA)
Operates only on 2024-10-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:24, 1-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA277
06:20
Ontario, Los Angeles (ONT) 2

11:46
Seattle-Tacoma (SEA)
Valid until 2024-09-08
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:26, 1-stop
Airbus A319 (319)
United Airlines UA277
06:20
Ontario, Los Angeles (ONT) 2

11:46
Seattle-Tacoma (SEA)
Effective 2024-09-11 through 2024-09-22
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 5:26, 1-stop
Airbus A319 (319)
United Airlines UA277
07:18
Ontario, Los Angeles (ONT) 2

11:42
Seattle-Tacoma (SEA)
Effective 2024-09-26 through 2024-10-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 4:24, 1-stop
Airbus A319 (319)
United Airlines UA277
07:18
Ontario, Los Angeles (ONT) 2

11:42
Seattle-Tacoma (SEA)
Effective 2024-10-12 through 2024-10-14
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:24, 1-stop
Airbus A320 (320)
United Airlines UA277
07:18
Ontario, Los Angeles (ONT) 2

11:42
Seattle-Tacoma (SEA)
Effective 2024-10-15 through 2024-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 4:24, 1-stop
Airbus A319 (319)
United Airlines UA2246
05:15
Ontario, Los Angeles (ONT) 2

13:57
Seattle-Tacoma (SEA)
Effective 2024-12-03 through 2024-12-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:42, 1-stop
Boeing 737-800 (738)
  • 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...).
All ONT-SEA flights
All United Airlines flights
Return (SEA-ONT) flights
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