Southwest Airlines flights from Raleigh/Durham (RDU) to Denver (DEN).

FLIGHT SCHEDULE
Direct Flights:
Mon-Fri 08:00 Raleigh/Durham (RDU) 1 10:05 Denver (DEN) Southwest Airlines WN 3308 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 08:00 Raleigh/Durham (RDU) 1 10:05 Denver (DEN) Southwest Airlines WN 3308 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-02-08 through 2026-02-11
Tue,Wed 08:00 Raleigh/Durham (RDU) 1 10:05 Denver (DEN) Southwest Airlines WN 3308 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Effective 2026-02-18 through 2026-03-04
Sun 05:35 Raleigh/Durham (RDU) 1 07:10 Denver (DEN) Southwest Airlines WN 3348 Non-stop Boeing 737-800 (73H) 3:35 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri 06:20 Raleigh/Durham (RDU) 1 07:55 Denver (DEN) Southwest Airlines WN 3348 Non-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2026-08-06 through 2026-09-28
Tue,Wed 06:30 Raleigh/Durham (RDU) 1 08:05 Denver (DEN) Southwest Airlines WN 3348 Non-stop Boeing 737-800 (73H) 3:35 Effective 2026-08-04 through 2026-09-30
Sat 13:55 Raleigh/Durham (RDU) 1 15:35 Denver (DEN) Southwest Airlines WN 3349 Non-stop Boeing 737-800 (73H) 3:40 Effective 2026-08-08 through 2026-09-26
Sun 14:35 Raleigh/Durham (RDU) 1 16:15 Denver (DEN) Southwest Airlines WN 3349 Non-stop Boeing 737 MAX 8 (7M8) 3:40 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri 16:05 Raleigh/Durham (RDU) 1 17:45 Denver (DEN) Southwest Airlines WN 3349 Non-stop Boeing 737 MAX 8 (7M8) 3:40 Effective 2026-08-06 through 2026-09-28
Tue,Wed 17:55 Raleigh/Durham (RDU) 1 19:35 Denver (DEN) Southwest Airlines WN 3349 Non-stop Boeing 737 MAX 8 (7M8) 3:40 Effective 2026-08-04 through 2026-09-30
Mon,Thu-Sat 16:55 Raleigh/Durham (RDU) 1 18:40 Denver (DEN) Southwest Airlines WN 3428 Non-stop Boeing 737-800 (73H) 3:45 Effective 2026-06-04 through 2026-08-03
Sun 18:10 Raleigh/Durham (RDU) 1 19:55 Denver (DEN) Southwest Airlines WN 3428 Non-stop Boeing 737-800 (73H) 3:45 Effective 2026-06-07 through 2026-08-02
Sat 11:15 Raleigh/Durham (RDU) 1 13:10 Denver (DEN) Southwest Airlines WN 3483 Non-stop Boeing 737 MAX 8 (7M8) 3:55 Valid until 2026-01-03
Sat 05:10 Raleigh/Durham (RDU) 1 06:45 Denver (DEN) Southwest Airlines WN 3651 Non-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2026-06-06 through 2026-08-01
Tue,Wed 17:30 Raleigh/Durham (RDU) 1 19:30 Denver (DEN) Southwest Airlines WN 3733 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-03-10 through 2026-04-01
Mon,Thu,Fri 18:00 Raleigh/Durham (RDU) 1 20:00 Denver (DEN) Southwest Airlines WN 3733 Non-stop Boeing 737-800 (73H) 4:00 Effective 2026-03-05 through 2026-04-06
Sun 18:10 Raleigh/Durham (RDU) 1 20:05 Denver (DEN) Southwest Airlines WN 3733 Non-stop Boeing 737 MAX 8 (7M8) 3:55 Effective 2026-03-08 through 2026-04-05
Mon,Thu,Fri 05:15 Raleigh/Durham (RDU) 1 06:50 Denver (DEN) Southwest Airlines WN 4083 Non-stop Boeing 737-800 (73H) 3:35 Effective 2026-06-04 through 2026-08-03
Tue,Wed 05:35 Raleigh/Durham (RDU) 1 07:10 Denver (DEN) Southwest Airlines WN 4083 Non-stop Boeing 737 MAX 8 (7M8) 3:35 Effective 2026-06-09 through 2026-07-29
Sat 17:50 Raleigh/Durham (RDU) 1 19:55 Denver (DEN) Southwest Airlines WN 4112 Non-stop Boeing 737-700 (Scimitar Winglets) 4:05 Effective 2026-02-14 through 2026-02-28
Mon,Thu,Fri 18:20 Raleigh/Durham (RDU) 1 20:25 Denver (DEN) Southwest Airlines WN 4227 Non-stop Boeing 737-700 (Scimitar Winglets) 4:05 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 18:20 Raleigh/Durham (RDU) 1 20:25 Denver (DEN) Southwest Airlines WN 4227 Non-stop Boeing 737-700 (Scimitar Winglets) 4:05 Effective 2026-02-20 through 2026-03-01
Non-Direct Flights:
Sun 17:10 Raleigh/Durham (RDU) 1 21:50 Denver (DEN) Southwest Airlines WN 1816 1-stop Boeing 737-700 (Scimitar Winglets) 6:40 Effective 2026-03-08 through 2026-04-05
Tue,Wed 16:10 Raleigh/Durham (RDU) 1 21:35 Denver (DEN) Southwest Airlines WN 294 2-stop Boeing 737-700 (Scimitar Winglets) 7:25 Effective 2026-06-09 through 2026-07-29
Sat 06:50 Raleigh/Durham (RDU) 1 12:50 Denver (DEN) Southwest Airlines WN 383 2-stop Boeing 737-700 (Scimitar Winglets) 8:00 Effective 2026-02-14 through 2026-02-28

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A domestic route departing from the Raleigh/Durham airport (RDU) and arriving at Denver airport (DEN).
The flight distance is 1433 miles, or 2305 km.
The timezone of the departure airport is UTC-5 , 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 3:35 and 4:10.

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Southwest Airlines flights from Raleigh/Durham (RDU) to Denver (DEN).

FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN3308

08:00

Raleigh/Durham (RDU) 1

10:05

Denver (DEN)

Effective 2026-01-26 through 2026-02-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3308

08:00

Raleigh/Durham (RDU) 1

10:05

Denver (DEN)

Effective 2026-02-08 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3308

08:00

Raleigh/Durham (RDU) 1

10:05

Denver (DEN)

Effective 2026-02-18 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3348

05:35

Raleigh/Durham (RDU) 1

07:10

Denver (DEN)

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3348

06:20

Raleigh/Durham (RDU) 1

07:55

Denver (DEN)

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3348

06:30

Raleigh/Durham (RDU) 1

08:05

Denver (DEN)

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3349

13:55

Raleigh/Durham (RDU) 1

15:35

Denver (DEN)

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:40, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3349

14:35

Raleigh/Durham (RDU) 1

16:15

Denver (DEN)

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3349

16:05

Raleigh/Durham (RDU) 1

17:45

Denver (DEN)

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3349

17:55

Raleigh/Durham (RDU) 1

19:35

Denver (DEN)

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:40, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3428

16:55

Raleigh/Durham (RDU) 1

18:40

Denver (DEN)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun
-

Duration: 3:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3428

18:10

Raleigh/Durham (RDU) 1

19:55

Denver (DEN)

Effective 2026-06-07 through 2026-08-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:45, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3483

11:15

Raleigh/Durham (RDU) 1

13:10

Denver (DEN)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3651

05:10

Raleigh/Durham (RDU) 1

06:45

Denver (DEN)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN3733

17:30

Raleigh/Durham (RDU) 1

19:30

Denver (DEN)

Effective 2026-03-10 through 2026-04-01

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3733

18:00

Raleigh/Durham (RDU) 1

20:00

Denver (DEN)

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN3733

18:10

Raleigh/Durham (RDU) 1

20:05

Denver (DEN)

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4083

05:15

Raleigh/Durham (RDU) 1

06:50

Denver (DEN)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:35, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4083

05:35

Raleigh/Durham (RDU) 1

07:10

Denver (DEN)

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:35, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4112

17:50

Raleigh/Durham (RDU) 1

19:55

Denver (DEN)

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 4:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4227

18:20

Raleigh/Durham (RDU) 1

20:25

Denver (DEN)

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4227

18:20

Raleigh/Durham (RDU) 1

20:25

Denver (DEN)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:05, non-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1816

17:10

Raleigh/Durham (RDU) 1

21:50

Denver (DEN)

Effective 2026-03-08 through 2026-04-05

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 6:40, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN294

16:10

Raleigh/Durham (RDU) 1

21:35

Denver (DEN)

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:25, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN383

06:50

Raleigh/Durham (RDU) 1

12:50

Denver (DEN)

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 8:00, 2-stop
Boeing 737-700 (Scimitar Winglets)

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A domestic route departing from the Raleigh/Durham airport (RDU) and arriving at Denver airport (DEN).
The flight distance is 1433 miles, or 2305 km.
The timezone of the departure airport is UTC-5 , 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 3:35 and 4:10.

All RDU-DEN flights

All Southwest Airlines flights

Return (DEN-RDU) flights

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