Southwest Airlines flights from Denver (DEN) to Seattle-Tacoma (SEA).
| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Sat
08:30
Denver (DEN)
10:30
Seattle-Tacoma (SEA) Southwest Airlines WN 321 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-07 through 2026-04-04 |
| Mon-Fri
08:35
Denver (DEN)
10:45
Seattle-Tacoma (SEA) Southwest Airlines WN 356 Non-stop Boeing 737-700 (Scimitar Winglets) 3:10 Effective 2026-01-06 through 2026-01-14 |
| Mon-Fri
08:35
Denver (DEN)
10:45
Seattle-Tacoma (SEA) Southwest Airlines WN 356 Non-stop Boeing 737-700 (Scimitar Winglets) 3:10 Effective 2026-01-20 through 2026-02-04 |
| Tue,Wed,Sun
08:35
Denver (DEN)
10:45
Seattle-Tacoma (SEA) Southwest Airlines WN 356 Non-stop Boeing 737-700 (Scimitar Winglets) 3:10 Effective 2026-02-08 through 2026-02-11 |
| Tue,Wed
08:35
Denver (DEN)
10:45
Seattle-Tacoma (SEA) Southwest Airlines WN 356 Non-stop Boeing 737-700 (Scimitar Winglets) 3:10 Effective 2026-02-18 through 2026-03-04 |
| Mon
08:30
Denver (DEN)
10:40
Seattle-Tacoma (SEA) Southwest Airlines WN 519 Non-stop Boeing 737-700 (Scimitar Winglets) 3:10 Operates only on 2026-01-05 |
| Mon,Thu,Fri
18:50
Denver (DEN)
20:45
Seattle-Tacoma (SEA) Southwest Airlines WN 555 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-08-06 through 2026-09-28 |
| Mon,Thu,Fri
08:35
Denver (DEN)
10:35
Seattle-Tacoma (SEA) Southwest Airlines WN 580 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-03-05 through 2026-04-06 |
| Sun
08:35
Denver (DEN)
10:35
Seattle-Tacoma (SEA) Southwest Airlines WN 580 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-08 through 2026-04-05 |
| Tue,Wed
20:30
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Southwest Airlines WN 659 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-03-10 through 2026-04-01 |
| Mon,Thu,Fri
20:50
Denver (DEN)
22:50
Seattle-Tacoma (SEA) Southwest Airlines WN 659 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-03-05 through 2026-04-06 |
| Sat
20:55
Denver (DEN)
22:55
Seattle-Tacoma (SEA) Southwest Airlines WN 659 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-03-07 through 2026-04-04 |
| Sun
21:10
Denver (DEN)
23:05
Seattle-Tacoma (SEA) Southwest Airlines WN 659 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-03-08 through 2026-04-05 |
| Sun
19:25
Denver (DEN)
21:25
Seattle-Tacoma (SEA) Southwest Airlines WN 760 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-06-07 through 2026-08-02 |
| Mon,Tue,Fri-Sun
07:50
Denver (DEN)
09:55
Seattle-Tacoma (SEA) Southwest Airlines WN 856 Non-stop Boeing 737-800 (73H) 3:05 Valid until 2026-01-04 |
| Sat
11:15
Denver (DEN)
13:10
Seattle-Tacoma (SEA) Southwest Airlines WN 888 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-08 through 2026-09-26 |
| Tue
11:25
Denver (DEN)
13:20
Seattle-Tacoma (SEA) Southwest Airlines WN 888 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-04 through 2026-09-29 |
| Sun
11:40
Denver (DEN)
13:40
Seattle-Tacoma (SEA) Southwest Airlines WN 888 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-08-09 through 2026-09-27 |
| Tue,Wed
20:30
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Southwest Airlines WN 972 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-04-07 through 2026-06-03 |
| Sat
17:20
Denver (DEN)
19:15
Seattle-Tacoma (SEA) Southwest Airlines WN 1271 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-03-07 through 2026-04-04 |
| Mon-Fri
15:45
Denver (DEN)
17:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1372 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-06 through 2026-01-14 |
| Tue-Fri,Sun
15:45
Denver (DEN)
17:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1372 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-18 through 2026-01-23 |
| Mon-Fri
15:45
Denver (DEN)
17:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1372 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-26 through 2026-02-04 |
| Sun
15:45
Denver (DEN)
17:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1372 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Operates only on 2026-02-08 |
| Tue,Wed
15:45
Denver (DEN)
17:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1372 Non-stop Boeing 737-700 (Scimitar Winglets) 3:05 Effective 2026-02-10 through 2026-02-11 |
| Tue,Wed
15:45
Denver (DEN)
17:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1372 Non-stop Boeing 737-700 (Scimitar Winglets) 3:05 Effective 2026-02-18 through 2026-03-04 |
| Mon,Thu,Fri
13:00
Denver (DEN)
14:55
Seattle-Tacoma (SEA) Southwest Airlines WN 1536 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-06 through 2026-09-28 |
| Mon,Thu,Fri
17:05
Denver (DEN)
19:05
Seattle-Tacoma (SEA) Southwest Airlines WN 1601 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-02-12 through 2026-02-16 |
| Thu,Fri,Sun
17:05
Denver (DEN)
19:05
Seattle-Tacoma (SEA) Southwest Airlines WN 1601 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-02-20 through 2026-03-01 |
| Sat
19:00
Denver (DEN)
21:05
Seattle-Tacoma (SEA) Southwest Airlines WN 1601 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-10 through 2026-02-07 |
| Sat
14:50
Denver (DEN)
16:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-01-10 through 2026-02-07 |
| Mon-Fri
20:25
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-06 through 2026-01-14 |
| Tue-Fri,Sun
20:25
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-18 through 2026-01-23 |
| Mon-Fri
20:25
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-26 through 2026-02-04 |
| Tue,Wed,Sun
20:25
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-08 through 2026-02-11 |
| Tue,Wed
20:25
Denver (DEN)
22:30
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-18 through 2026-03-04 |
| Thu,Fri,Sun
20:45
Denver (DEN)
22:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-11 through 2026-01-16 |
| Mon,Sun
20:45
Denver (DEN)
22:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-19 through 2026-01-25 |
| Thu,Fri,Sun
20:45
Denver (DEN)
22:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-01 through 2026-02-06 |
| Mon,Sun
20:45
Denver (DEN)
22:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-09 through 2026-02-15 |
| Sat
20:45
Denver (DEN)
22:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737-800 (73H) 3:05 Effective 2026-02-14 through 2026-02-28 |
| Mon,Tue,Thu
20:45
Denver (DEN)
22:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-17 through 2026-02-23 |
| Mon
20:45
Denver (DEN)
22:50
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Operates only on 2026-03-02 |
| Mon,Thu,Fri
21:55
Denver (DEN)
00:10
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-12 through 2026-02-16 The flight arrives 1 day after departure. |
| Thu,Fri,Sun
21:55
Denver (DEN)
00:10
Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-20 through 2026-03-01 The flight arrives 1 day after departure. |
| Wed
11:25
Denver (DEN)
13:20
Seattle-Tacoma (SEA) Southwest Airlines WN 1670 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-05 through 2026-09-30 |
| Mon,Thu,Fri
15:35
Denver (DEN)
17:30
Seattle-Tacoma (SEA) Southwest Airlines WN 1670 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-08-06 through 2026-09-28 |
| Sat
19:35
Denver (DEN)
21:30
Seattle-Tacoma (SEA) Southwest Airlines WN 1670 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-08-08 through 2026-09-26 |
| Sun
19:50
Denver (DEN)
21:45
Seattle-Tacoma (SEA) Southwest Airlines WN 1670 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-09 through 2026-09-27 |
| Mon,Thu,Fri,Sun
07:45
Denver (DEN)
09:45
Seattle-Tacoma (SEA) Southwest Airlines WN 1713 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-06-04 through 2026-08-03 |
- A domestic route departing from the Denver airport (DEN) and arriving at Seattle-Tacoma airport (SEA).
- The flight distance is 1022 miles, or 1644 km.
- The timezone of the departure airport is UTC-7 , 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.
- For direct flights, the flight time varies between 2:50 and 3:15.
