United Airlines flights from Seattle-Tacoma (SEA) to Denver (DEN).
| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Daily
12:25
Seattle-Tacoma (SEA)
16:11
Denver (DEN) United Airlines UA 2258 Non-stop Boeing 737 MAX 8 (7M8) 2:46 Effective 2026-01-07 through 2026-02-02 |
| Tue
12:25
Seattle-Tacoma (SEA)
16:11
Denver (DEN) United Airlines UA 2258 Non-stop Boeing 737 MAX 9 (7M9) 2:46 Operates only on 2026-02-03 |
| Daily
12:25
Seattle-Tacoma (SEA)
16:11
Denver (DEN) United Airlines UA 2258 Non-stop Boeing 737 MAX 8 (7M8) 2:46 Effective 2026-02-05 through 2026-02-11 |
| Wed
12:35
Seattle-Tacoma (SEA)
16:21
Denver (DEN) United Airlines UA 2258 Non-stop Boeing 737 MAX 8 (7M8) 2:46 Operates only on 2026-02-04 |
| Mon,Tue,Thu-Sun
05:00
Seattle-Tacoma (SEA)
08:38
Denver (DEN) United Airlines UA 2601 Non-stop Boeing 737 MAX 9 (7M9) 2:38 Effective 2026-02-12 through 2026-02-23 |
| Tue,Wed
05:00
Seattle-Tacoma (SEA)
08:38
Denver (DEN) United Airlines UA 2601 Non-stop Boeing 737-800 (738) 2:38 Effective 2026-02-18 through 2026-03-04 |
| Mon,Thu-Sun
05:00
Seattle-Tacoma (SEA)
08:38
Denver (DEN) United Airlines UA 2601 Non-stop Boeing 737 MAX 9 (7M9) 2:38 Effective 2026-02-26 through 2026-03-07 |
| Sun
05:00
Seattle-Tacoma (SEA)
08:39
Denver (DEN) United Airlines UA 2601 Non-stop Airbus A319 (319) 2:39 Effective 2026-03-08 through 2026-03-22 |
| Mon-Sat
05:00
Seattle-Tacoma (SEA)
08:38
Denver (DEN) United Airlines UA 2601 Non-stop Boeing 737 MAX 9 (7M9) 2:38 Effective 2026-03-09 through 2026-03-28 |
| Daily
05:00
Seattle-Tacoma (SEA)
08:43
Denver (DEN) United Airlines UA 2601 Non-stop Boeing 737-800 (738) 2:43 Effective 2026-03-29 through 2026-04-29 |
| Daily
05:07
Seattle-Tacoma (SEA)
08:50
Denver (DEN) United Airlines UA 2601 Non-stop Boeing 737 MAX 8 (7M8) 2:43 Effective from 2026-04-30 |
| Mon,Tue,Thu-Sun
15:30
Seattle-Tacoma (SEA)
19:15
Denver (DEN) United Airlines UA 2860 Non-stop Boeing 737-800 (738) 2:45 Effective 2026-03-05 through 2026-03-17 |
| Wed
15:30
Seattle-Tacoma (SEA)
19:16
Denver (DEN) United Airlines UA 2860 Non-stop Airbus A319 (319) 2:46 Operates only on 2026-03-11 |
| Daily
15:30
Seattle-Tacoma (SEA)
19:15
Denver (DEN) United Airlines UA 2860 Non-stop Boeing 737-800 (738) 2:45 Effective 2026-03-18 through 2026-03-28 |
| Non-Direct Flights: |
| Daily
08:35
Seattle-Tacoma (SEA)
16:28
Denver (DEN) United Airlines UA 2121 1-stop Airbus A320 (320) 6:53 Effective 2026-08-11 through 2026-10-24 |
| Daily
08:42
Seattle-Tacoma (SEA)
16:28
Denver (DEN) United Airlines UA 2121 1-stop Airbus A320 (320) 6:46 Effective 2026-04-30 through 2026-05-20 |
| Daily
09:02
Seattle-Tacoma (SEA)
16:28
Denver (DEN) United Airlines UA 2121 1-stop Airbus A320 (320) 6:26 Effective 2026-03-29 through 2026-04-29 |
| Daily
09:02
Seattle-Tacoma (SEA)
16:28
Denver (DEN) United Airlines UA 2121 1-stop Airbus A320 (320) 6:26 Effective 2026-05-21 through 2026-08-10 |
| Daily
09:02
Seattle-Tacoma (SEA)
16:28
Denver (DEN) United Airlines UA 2121 1-stop Airbus A320 (320) 6:26 Effective from 2026-10-25 |
| Mon,Tue,Thu-Sun
07:15
Seattle-Tacoma (SEA)
16:09
Denver (DEN) United Airlines UA 611 2-stop Airbus A320 (320) 7:54 Effective 2026-02-12 through 2026-03-03 |
| Wed
07:15
Seattle-Tacoma (SEA)
16:09
Denver (DEN) United Airlines UA 611 2-stop Airbus A320 (320) 7:54 Effective 2026-02-18 through 2026-03-04 |
| Daily
06:50
Seattle-Tacoma (SEA)
23:01
Denver (DEN) United Airlines UA 1900 2-stop Boeing 737 MAX 8 (7M8) 15:11 Effective 2026-05-21 through 2026-08-17 |
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- A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Denver airport (DEN).
- The flight distance is 1022 miles, or 1644 km.
- The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-7 . 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.
- For direct flights, the flight time varies between 2:38 and 2:52.
