United Airlines flights from Orlando (MCO) to Seattle-Tacoma (SEA).

Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
Daily 15:06 Orlando (MCO) B 22:49 Seattle-Tacoma (SEA)
United Airlines UA 2456 1-stop Boeing 737-900 (739) 10:43 Effective 2026-04-30 through 2026-05-20
Daily 15:10 Orlando (MCO) B 22:53 Seattle-Tacoma (SEA)
United Airlines UA 2456 1-stop Boeing 737-900 (739) 10:43 Effective 2026-03-29 through 2026-04-29
Daily 15:15 Orlando (MCO) B 22:59 Seattle-Tacoma (SEA)
United Airlines UA 2456 1-stop Boeing 737-900 (739) 10:44 Effective 2026-03-05 through 2026-03-28
Mon-Thu 15:17 Orlando (MCO) B 23:00 Seattle-Tacoma (SEA)
United Airlines UA 2456 1-stop Boeing 737-900 (739) 10:43 Effective 2026-02-12 through 2026-03-04
Fri 15:17 Orlando (MCO) B 23:07 Seattle-Tacoma (SEA)
United Airlines UA 2456 1-stop Boeing 737-900 (739) 10:50 Effective 2026-02-13 through 2026-02-27
Sat 15:17 Orlando (MCO) B 23:03 Seattle-Tacoma (SEA)
United Airlines UA 2456 1-stop Boeing 737-900 (739) 10:46 Effective 2026-02-14 through 2026-02-28
Sun 15:17 Orlando (MCO) B 23:23 Seattle-Tacoma (SEA)
United Airlines UA 2456 1-stop Boeing 737-900 (739) 11:06 Effective 2026-02-15 through 2026-03-01
Daily 15:40 Orlando (MCO) B 22:48 Seattle-Tacoma (SEA)
United Airlines UA 2456 1-stop Boeing 737-900 (739) 10:08 Effective 2026-05-21 through 2026-10-24
Daily 15:40 Orlando (MCO) B 22:38 Seattle-Tacoma (SEA)
United Airlines UA 2456 1-stop Boeing 737-900 (739) 9:58 Effective from 2026-10-25
Mon,Thu-Sun 11:52 Orlando (MCO) B 21:14 Seattle-Tacoma (SEA)
United Airlines UA 486 2-stop Boeing 737-900 (739) 12:22 Effective 2026-03-05 through 2026-03-28
Tue,Wed 11:52 Orlando (MCO) B 21:14 Seattle-Tacoma (SEA)
United Airlines UA 486 2-stop Boeing 737-800 (738) 12:22 Effective 2026-03-10 through 2026-03-25


United Airlines flights from Orlando (MCO) to Seattle-Tacoma (SEA).
Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:

Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:43, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:43, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:44, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
-
Duration: 10:43, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-02-13 through 2026-02-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 10:50, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-02-14 through 2026-02-28
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 10:46, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-02-15 through 2026-03-01
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 11:06, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-05-21 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:08, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:58, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-03-05 through 2026-03-28
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 12:22, 2-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-03-10 through 2026-03-25
Mon
-
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 12:22, 2-stop
Boeing 737-800 (738)
  • A domestic route departing from the Orlando airport (MCO) and arriving at Seattle-Tacoma airport (SEA).
  • The flight distance is 2548 miles, or 4101 km.
  • The timezone of the departure airport is UTC-5 , and the timezone of the arrival airport is UTC-8 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.