Southwest Airlines flights from Denver (DEN) to Washington Dulles (IAD).
| FLIGHT SCHEDULE |
|---|
| Direct Flights: |
| Mon,Thu,Fri
10:15
Denver (DEN)
15:45
Washington Dulles (IAD) Southwest Airlines WN 3437 Non-stop Boeing 737-800 (73H) 3:30 Effective 2026-06-04 through 2026-08-03 |
| Tue,Wed
10:45
Denver (DEN)
16:05
Washington Dulles (IAD) Southwest Airlines WN 3437 Non-stop Boeing 737 MAX 8 (7M8) 3:20 Effective 2026-06-09 through 2026-07-29 |
| Sat,Sun
10:50
Denver (DEN)
16:05
Washington Dulles (IAD) Southwest Airlines WN 3437 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-06-06 through 2026-08-02 |
| Wed,Thu
10:30
Denver (DEN)
15:45
Washington Dulles (IAD) Southwest Airlines WN 3567 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Valid until 2026-01-01 |
| Mon
18:15
Denver (DEN)
23:30
Washington Dulles (IAD) Southwest Airlines WN 3567 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Operates only on 2026-01-05 |
| Tue,Wed
18:35
Denver (DEN)
23:40
Washington Dulles (IAD) Southwest Airlines WN 3758 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-03-10 through 2026-04-01 |
| Mon,Thu,Fri,Sun
19:05
Denver (DEN)
00:15
Washington Dulles (IAD) Southwest Airlines WN 3758 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-03-05 through 2026-04-06 The flight arrives 1 day after departure. |
| Sat
19:15
Denver (DEN)
00:25
Washington Dulles (IAD) Southwest Airlines WN 3758 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-03-07 through 2026-04-04 The flight arrives 1 day after departure. |
| Mon,Thu,Fri
09:30
Denver (DEN)
14:45
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-12 through 2026-02-16 |
| Fri,Sun
09:30
Denver (DEN)
14:45
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-20 through 2026-02-22 |
| Thu,Fri,Sun
09:30
Denver (DEN)
14:45
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-02-26 through 2026-03-01 |
| Mon-Fri
10:35
Denver (DEN)
15:50
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-01-06 through 2026-01-14 |
| Tue-Fri,Sun
10:35
Denver (DEN)
15:50
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-01-18 through 2026-01-23 |
| Mon-Fri
10:35
Denver (DEN)
15:50
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-01-26 through 2026-02-04 |
| Tue,Wed,Sun
10:35
Denver (DEN)
15:50
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-02-08 through 2026-02-11 |
| Tue,Wed
10:35
Denver (DEN)
15:50
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-02-18 through 2026-03-04 |
| Thu,Fri,Sun
10:45
Denver (DEN)
16:00
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-01-11 through 2026-01-16 |
| Mon,Sun
10:45
Denver (DEN)
16:00
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-01-19 through 2026-01-25 |
| Thu,Fri,Sun
10:45
Denver (DEN)
16:00
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-02-01 through 2026-02-06 |
| Mon,Sun
10:45
Denver (DEN)
16:00
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-02-09 through 2026-02-15 |
| Mon,Tue,Thu
10:45
Denver (DEN)
16:00
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Effective 2026-02-17 through 2026-02-23 |
| Mon
10:45
Denver (DEN)
16:00
Washington Dulles (IAD) Southwest Airlines WN 4330 Non-stop Boeing 737-800 (73H) 3:15 Operates only on 2026-03-02 |
| Non-Direct Flights: |
| Sun
08:25
Denver (DEN)
17:25
Washington Dulles (IAD) Southwest Airlines WN 2007 1-stop Boeing 737-800 (73H) 7:00 Effective 2026-04-12 through 2026-05-17 |
| Sun
08:25
Denver (DEN)
17:25
Washington Dulles (IAD) Southwest Airlines WN 2007 1-stop Boeing 737-800 (73H) 7:00 Operates only on 2026-05-31 |
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- A domestic route departing from the Denver airport (DEN) and arriving at Washington Dulles airport (IAD).
- The flight distance is 1448 miles, or 2331 km.
- The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-5 . 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 3:05 and 3:30.
