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

Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
Daily 12:10 Seattle-Tacoma (SEA) 21:37 Ontario, Los Angeles (ONT) 2
United Airlines UA 1563 1-stop Boeing 737-900 (739) 9:27 Effective 2025-06-26 through 2025-07-03
Daily 12:10 Seattle-Tacoma (SEA) 21:37 Ontario, Los Angeles (ONT) 2
United Airlines UA 1563 1-stop Boeing 737-900 (739) 9:27 Effective 2025-07-05 through 2025-08-18
Mon,Thu-Sun 05:05 Seattle-Tacoma (SEA) 12:24 Ontario, Los Angeles (ONT) 2
United Airlines UA 1697 1-stop Boeing 737-900 (739) 7:19 Valid until 2025-05-19
Sat 07:05 Seattle-Tacoma (SEA) 22:26 Ontario, Los Angeles (ONT) 2
United Airlines UA 2135 2-stop Boeing 737-900 (739) 15:21 Effective 2025-08-23 through 2025-09-20




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United Airlines flights from Seattle-Tacoma (SEA) to Ontario, Los Angeles (ONT).
Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
United Airlines UA1563
12:10
Seattle-Tacoma (SEA)

21:37
Ontario, Los Angeles (ONT) 2
Effective 2025-06-26 through 2025-07-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:27, 1-stop
Boeing 737-900 (739)
United Airlines UA1563
12:10
Seattle-Tacoma (SEA)

21:37
Ontario, Los Angeles (ONT) 2
Effective 2025-07-05 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:27, 1-stop
Boeing 737-900 (739)
United Airlines UA1697
05:05
Seattle-Tacoma (SEA)

12:24
Ontario, Los Angeles (ONT) 2
Valid until 2025-05-19
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 7:19, 1-stop
Boeing 737-900 (739)
United Airlines UA2135
07:05
Seattle-Tacoma (SEA)

22:26
Ontario, Los Angeles (ONT) 2
Effective 2025-08-23 through 2025-09-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 15:21, 2-stop
Boeing 737-900 (739)
  • 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...).
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