All airlines flying from Denver (DEN) to Washington Dulles (IAD).

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FLIGHT SCHEDULE
Direct Flights:
Tue,Wed 10:45 Denver (DEN) 15:55 Washington Dulles (IAD) Southwest Airlines WN 165 Non-stop Boeing 737 MAX 8 (7M8) 3:10 Effective 2026-03-10 through 2026-04-01
Mon,Thu,Fri 10:55 Denver (DEN) 16:05 Washington Dulles (IAD) Southwest Airlines WN 165 Non-stop Boeing 737-700 (Scimitar Winglets) 3:10 Effective 2026-03-05 through 2026-04-06
Sat 10:55 Denver (DEN) 16:05 Washington Dulles (IAD) Southwest Airlines WN 165 Non-stop Boeing 737-800 (73H) 3:10 Effective 2026-03-07 through 2026-04-04
Mon,Tue,Thu-Sun 11:15 Denver (DEN) 16:35 Washington Dulles (IAD) United Airlines UA 237 Non-stop Boeing 737-900 (739) 3:20 Effective 2026-01-06 through 2026-02-10
Wed 11:17 Denver (DEN) 16:35 Washington Dulles (IAD) United Airlines UA 237 Non-stop Boeing 737 MAX 9 (7M9) 3:18 Effective 2026-01-07 through 2026-02-11
Daily 10:20 Denver (DEN) 15:44 Washington Dulles (IAD) United Airlines UA 326 Non-stop Boeing 737-900 (739) 3:24 Effective 2026-03-05 through 2026-03-28
Sat 07:05 Denver (DEN) 12:25 Washington Dulles (IAD) Southwest Airlines WN 345 Non-stop Boeing 737 MAX 8 (7M8) 3:20 Effective 2026-08-08 through 2026-09-26
Sun 08:15 Denver (DEN) 13:40 Washington Dulles (IAD) Southwest Airlines WN 345 Non-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2026-08-09 through 2026-09-27
Tue,Wed 09:25 Denver (DEN) 14:45 Washington Dulles (IAD) Southwest Airlines WN 345 Non-stop Boeing 737-800 (73H) 3:20 Effective 2026-08-04 through 2026-09-30
Daily 13:25 Denver (DEN) 18:57 Washington Dulles (IAD) United Airlines UA 347 Non-stop Airbus A321neo (32Q) 3:32 Effective 2026-03-29 through 2026-04-29
Daily 13:26 Denver (DEN) 18:47 Washington Dulles (IAD) United Airlines UA 347 Non-stop Airbus A321neo (32Q) 3:21 Effective 2026-03-05 through 2026-03-28
Daily 13:30 Denver (DEN) 18:50 Washington Dulles (IAD) United Airlines UA 347 Non-stop Boeing 737-900 (739) 3:20 Valid until 2026-01-05
Daily 13:45 Denver (DEN) 19:05 Washington Dulles (IAD) United Airlines UA 347 Non-stop Airbus A321neo (32Q) 3:20 Effective 2026-04-30 through 2026-05-20
Daily 13:45 Denver (DEN) 19:05 Washington Dulles (IAD) United Airlines UA 347 Non-stop Boeing 737-900 (739) 3:20 Effective from 2026-05-21
Daily 14:02 Denver (DEN) 19:21 Washington Dulles (IAD) United Airlines UA 347 Non-stop Boeing 757-300 (753) 3:19 Effective 2026-01-06 through 2026-02-11
Daily 14:04 Denver (DEN) 19:24 Washington Dulles (IAD) United Airlines UA 347 Non-stop Boeing 757-300 (753) 3:20 Effective 2026-02-12 through 2026-03-04
Daily 07:45 Denver (DEN) 13:05 Washington Dulles (IAD) United Airlines UA 351 Non-stop Boeing 737-900 (739) 3:20 Effective 2026-02-12 through 2026-03-04
Mon,Thu,Fri 09:35 Denver (DEN) 15:00 Washington Dulles (IAD) Southwest Airlines WN 494 Non-stop Boeing 737 MAX 8 (7M8) 3:25 Effective 2026-08-06 through 2026-09-28
Daily 11:20 Denver (DEN) 16:39 Washington Dulles (IAD) United Airlines UA 507 Non-stop Boeing 737 MAX 9 (7M9) 3:19 Valid until 2026-01-05
Mon,Tue,Thu-Sat 11:20 Denver (DEN) 16:37 Washington Dulles (IAD) United Airlines UA 687 Non-stop Boeing 737 MAX 9 (7M9) 3:17 Effective 2026-02-12 through 2026-02-21
Daily 11:20 Denver (DEN) 16:37 Washington Dulles (IAD) United Airlines UA 687 Non-stop Boeing 737 MAX 9 (7M9) 3:17 Effective 2026-02-22 through 2026-03-04
Daily 11:22 Denver (DEN) 16:40 Washington Dulles (IAD) United Airlines UA 687 Non-stop Boeing 737 MAX 9 (7M9) 3:18 Effective 2026-03-05 through 2026-03-28
Wed,Sun 11:25 Denver (DEN) 16:42 Washington Dulles (IAD) United Airlines UA 687 Non-stop Boeing 737 MAX 9 (7M9) 3:17 Effective 2026-02-15 through 2026-02-18
Mon,Wed-Sat 15:36 Denver (DEN) 20:53 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 737-900 (739) 3:17 Effective 2026-02-12 through 2026-03-04
Sun 15:36 Denver (DEN) 20:53 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 737 MAX 9 (7M9) 3:17 Effective 2026-02-15 through 2026-03-01
Tue 15:36 Denver (DEN) 20:55 Washington Dulles (IAD) United Airlines UA 798 Non-stop Airbus A321neo (32Q) 3:19 Effective 2026-02-17 through 2026-03-03
Mon,Tue,Thu,Sat,Sun 15:47 Denver (DEN) 21:07 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 737-900 (739) 3:20 Effective 2026-01-06 through 2026-02-08
Fri 15:47 Denver (DEN) 21:08 Washington Dulles (IAD) United Airlines UA 798 Non-stop Airbus A321neo (32Q) 3:21 Effective 2026-01-09 through 2026-02-06
Mon 15:47 Denver (DEN) 21:08 Washington Dulles (IAD) United Airlines UA 798 Non-stop Airbus A321neo (32Q) 3:21 Operates only on 2026-02-09
Tue 15:47 Denver (DEN) 21:07 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 737-900 (739) 3:20 Operates only on 2026-02-10
Wed 15:51 Denver (DEN) 21:11 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 737-900 (739) 3:20 Effective 2026-01-07 through 2026-02-04
Daily 15:51 Denver (DEN) 21:21 Washington Dulles (IAD) United Airlines UA 798 Non-stop Airbus A321neo (32Q) 3:30 Effective 2026-03-29 through 2026-04-29
Daily 15:55 Denver (DEN) 21:10 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 757-300 (753) 3:15 Effective 2026-04-30 through 2026-05-20
Daily 15:55 Denver (DEN) 21:10 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 737-900 (739) 3:15 Effective from 2026-05-21
Wed 15:59 Denver (DEN) 21:19 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 737-900 (739) 3:20 Operates only on 2026-02-11
Mon-Fri 16:00 Denver (DEN) 21:18 Washington Dulles (IAD) United Airlines UA 798 Non-stop Airbus A321neo (32Q) 3:18 Effective 2026-03-05 through 2026-03-13
Sun 16:00 Denver (DEN) 21:16 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 737-900 (739) 3:16 Effective 2026-03-08 through 2026-03-22
Mon-Sat 16:00 Denver (DEN) 21:18 Washington Dulles (IAD) United Airlines UA 798 Non-stop Airbus A321neo (32Q) 3:18 Effective 2026-03-14 through 2026-03-27
Sat 16:00 Denver (DEN) 21:16 Washington Dulles (IAD) United Airlines UA 798 Non-stop Boeing 737 MAX 9 (7M9) 3:16 Operates only on 2026-03-28
Daily 16:05 Denver (DEN) 21:25 Washington Dulles (IAD) United Airlines UA 798 Non-stop Airbus A321neo (32Q) 3:20 Valid until 2026-01-05
Sat 16:10 Denver (DEN) 21:28 Washington Dulles (IAD) United Airlines UA 798 Non-stop Airbus A321neo (32Q) 3:18 Operates only on 2026-03-07
Mon,Tue,Fri,Sun 18:10 Denver (DEN) 23:25 Washington Dulles (IAD) Southwest Airlines WN 820 Non-stop Boeing 737-800 (73H) 3:15 Valid until 2026-01-04
Sat 19:45 Denver (DEN) 00:55 Washington Dulles (IAD) Southwest Airlines WN 820 Non-stop Boeing 737-800 (73H) 3:10 Valid until 2026-01-03 The flight arrives 1 day after departure.
Sat 17:35 Denver (DEN) 22:55 Washington Dulles (IAD) Southwest Airlines WN 1009 Non-stop Boeing 737 MAX 8 (7M8) 3:20 Effective 2026-04-11 through 2026-05-30
Tue,Wed 18:10 Denver (DEN) 23:40 Washington Dulles (IAD) Southwest Airlines WN 1009 Non-stop Boeing 737 MAX 8 (7M8) 3:30 Effective 2026-04-07 through 2026-06-03
Sun 18:20 Denver (DEN) 23:45 Washington Dulles (IAD) Southwest Airlines WN 1009 Non-stop Boeing 737 MAX 8 (7M8) 3:25 Operates only on 2026-05-24
Mon,Thu,Fri 19:05 Denver (DEN) 00:20 Washington Dulles (IAD) Southwest Airlines WN 1009 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-04-09 through 2026-06-01 The flight arrives 1 day after departure.
Sun 19:25 Denver (DEN) 00:40 Washington Dulles (IAD) Southwest Airlines WN 1009 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-04-12 through 2026-05-17 The flight arrives 1 day after departure.
Sun 19:25 Denver (DEN) 00:40 Washington Dulles (IAD) Southwest Airlines WN 1009 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Operates only on 2026-05-31 The flight arrives 1 day after departure.
Tue,Sat 07:45 Denver (DEN) 13:12 Washington Dulles (IAD) United Airlines UA 1101 Non-stop Airbus A321neo (32Q) 3:27 Effective 2026-01-06 through 2026-01-10

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Parallax here DEN-IAD

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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 3:35.

Return (IAD-DEN) flights

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All airlines flying from Denver (DEN) to Washington Dulles (IAD).

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN165

10:45

Denver (DEN)

15:55

Washington Dulles (IAD)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:10, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN165

10:55

Denver (DEN)

16:05

Washington Dulles (IAD)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:10, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN165

10:55

Denver (DEN)

16:05

Washington Dulles (IAD)

Effective 2026-03-07 through 2026-04-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

United Airlines UA237

11:15

Denver (DEN)

16:35

Washington Dulles (IAD)

Effective 2026-01-06 through 2026-02-10

Mon

Tue

Wed
-

Thu

Fri

Sat

Sun

Duration: 3:20, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA237

11:17

Denver (DEN)

16:35

Washington Dulles (IAD)

Effective 2026-01-07 through 2026-02-11

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:18, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA326

10:20

Denver (DEN)

15:44

Washington Dulles (IAD)

Effective 2026-03-05 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:24, non-stop
Boeing 737-900 (739)

Direct Flights:

Southwest Airlines WN345

07:05

Denver (DEN)

12:25

Washington Dulles (IAD)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN345

08:15

Denver (DEN)

13:40

Washington Dulles (IAD)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN345

09:25

Denver (DEN)

14:45

Washington Dulles (IAD)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:20, non-stop
Boeing 737-800 (73H)

Direct Flights:

United Airlines UA347

13:25

Denver (DEN)

18:57

Washington Dulles (IAD)

Effective 2026-03-29 through 2026-04-29

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:32, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA347

13:26

Denver (DEN)

18:47

Washington Dulles (IAD)

Effective 2026-03-05 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:21, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA347

13:30

Denver (DEN)

18:50

Washington Dulles (IAD)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:20, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA347

13:45

Denver (DEN)

19:05

Washington Dulles (IAD)

Effective 2026-04-30 through 2026-05-20

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:20, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA347

13:45

Denver (DEN)

19:05

Washington Dulles (IAD)

Effective from 2026-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:20, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA347

14:02

Denver (DEN)

19:21

Washington Dulles (IAD)

Effective 2026-01-06 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:19, non-stop
Boeing 757-300 (753)

Direct Flights:

United Airlines UA347

14:04

Denver (DEN)

19:24

Washington Dulles (IAD)

Effective 2026-02-12 through 2026-03-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:20, non-stop
Boeing 757-300 (753)

Direct Flights:

United Airlines UA351

07:45

Denver (DEN)

13:05

Washington Dulles (IAD)

Effective 2026-02-12 through 2026-03-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:20, non-stop
Boeing 737-900 (739)

Direct Flights:

Southwest Airlines WN494

09:35

Denver (DEN)

15:00

Washington Dulles (IAD)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

United Airlines UA507

11:20

Denver (DEN)

16:39

Washington Dulles (IAD)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:19, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA687

11:20

Denver (DEN)

16:37

Washington Dulles (IAD)

Effective 2026-02-12 through 2026-02-21

Mon

Tue

Wed
-

Thu

Fri

Sat

Sun
-

Duration: 3:17, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA687

11:20

Denver (DEN)

16:37

Washington Dulles (IAD)

Effective 2026-02-22 through 2026-03-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:17, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA687

11:22

Denver (DEN)

16:40

Washington Dulles (IAD)

Effective 2026-03-05 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:18, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA687

11:25

Denver (DEN)

16:42

Washington Dulles (IAD)

Effective 2026-02-15 through 2026-02-18

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:17, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA798

15:36

Denver (DEN)

20:53

Washington Dulles (IAD)

Effective 2026-02-12 through 2026-03-04

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun
-

Duration: 3:17, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA798

15:36

Denver (DEN)

20:53

Washington Dulles (IAD)

Effective 2026-02-15 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:17, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA798

15:36

Denver (DEN)

20:55

Washington Dulles (IAD)

Effective 2026-02-17 through 2026-03-03

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:19, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA798

15:47

Denver (DEN)

21:07

Washington Dulles (IAD)

Effective 2026-01-06 through 2026-02-08

Mon

Tue

Wed
-

Thu

Fri
-

Sat

Sun

Duration: 3:20, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA798

15:47

Denver (DEN)

21:08

Washington Dulles (IAD)

Effective 2026-01-09 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 3:21, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA798

15:47

Denver (DEN)

21:08

Washington Dulles (IAD)

Operates only on 2026-02-09

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:21, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA798

15:47

Denver (DEN)

21:07

Washington Dulles (IAD)

Operates only on 2026-02-10

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:20, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA798

15:51

Denver (DEN)

21:11

Washington Dulles (IAD)

Effective 2026-01-07 through 2026-02-04

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:20, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA798

15:51

Denver (DEN)

21:21

Washington Dulles (IAD)

Effective 2026-03-29 through 2026-04-29

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:30, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA798

15:55

Denver (DEN)

21:10

Washington Dulles (IAD)

Effective 2026-04-30 through 2026-05-20

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:15, non-stop
Boeing 757-300 (753)

Direct Flights:

United Airlines UA798

15:55

Denver (DEN)

21:10

Washington Dulles (IAD)

Effective from 2026-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:15, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA798

15:59

Denver (DEN)

21:19

Washington Dulles (IAD)

Operates only on 2026-02-11

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:20, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA798

16:00

Denver (DEN)

21:18

Washington Dulles (IAD)

Effective 2026-03-05 through 2026-03-13

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:18, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA798

16:00

Denver (DEN)

21:16

Washington Dulles (IAD)

Effective 2026-03-08 through 2026-03-22

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:16, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA798

16:00

Denver (DEN)

21:18

Washington Dulles (IAD)

Effective 2026-03-14 through 2026-03-27

Mon

Tue

Wed

Thu

Fri

Sat

Sun
-

Duration: 3:18, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA798

16:00

Denver (DEN)

21:16

Washington Dulles (IAD)

Operates only on 2026-03-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:16, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA798

16:05

Denver (DEN)

21:25

Washington Dulles (IAD)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:20, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA798

16:10

Denver (DEN)

21:28

Washington Dulles (IAD)

Operates only on 2026-03-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:18, non-stop
Airbus A321neo (32Q)

Direct Flights:

Southwest Airlines WN820

18:10

Denver (DEN)

23:25

Washington Dulles (IAD)

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu
-

Fri

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN820

19:45

Denver (DEN)

00:55(+1)

Washington Dulles (IAD)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:10, non-stop
Boeing 737-800 (73H)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN1009

17:35

Denver (DEN)

22:55

Washington Dulles (IAD)

Effective 2026-04-11 through 2026-05-30

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:20, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1009

18:10

Denver (DEN)

23:40

Washington Dulles (IAD)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:30, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1009

18:20

Denver (DEN)

23:45

Washington Dulles (IAD)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:25, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1009

19:05

Denver (DEN)

00:20(+1)

Washington Dulles (IAD)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN1009

19:25

Denver (DEN)

00:40(+1)

Washington Dulles (IAD)

Effective 2026-04-12 through 2026-05-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN1009

19:25

Denver (DEN)

00:40(+1)

Washington Dulles (IAD)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

United Airlines UA1101

07:45

Denver (DEN)

13:12

Washington Dulles (IAD)

Effective 2026-01-06 through 2026-01-10

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:27, non-stop
Airbus A321neo (32Q)

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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 3:35.

Return (IAD-DEN) flights

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