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

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FLIGHT SCHEDULE
Direct Flights:
Mon,Tue,Thu 17:40 Washington Dulles (IAD) 19:55 Denver (DEN) Southwest Airlines WN 4583 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Effective 2026-02-17 through 2026-02-23
Mon 17:40 Washington Dulles (IAD) 19:55 Denver (DEN) Southwest Airlines WN 4583 Non-stop Boeing 737 MAX 8 (7M8) 4:15 Operates only on 2026-03-02
Thu,Fri 19:00 Washington Dulles (IAD) 21:05 Denver (DEN) Southwest Airlines WN 4583 Non-stop Boeing 737-800 (73H) 4:05 Effective 2026-02-12 through 2026-02-13
Mon 19:00 Washington Dulles (IAD) 21:05 Denver (DEN) Southwest Airlines WN 4583 Non-stop Boeing 737 MAX 8 (7M8) 4:05 Operates only on 2026-02-16
Thu,Fri,Sun 19:00 Washington Dulles (IAD) 21:05 Denver (DEN) Southwest Airlines WN 4583 Non-stop Boeing 737-800 (73H) 4:05 Effective 2026-02-20 through 2026-03-01
Sat 17:00 Washington Dulles (IAD) 18:40 Denver (DEN) Southwest Airlines WN 4708 Non-stop Boeing 737 MAX 8 (7M8) 3:40 Effective 2026-08-08 through 2026-09-26
Sun 17:30 Washington Dulles (IAD) 19:15 Denver (DEN) Southwest Airlines WN 4708 Non-stop Boeing 737-800 (73H) 3:45 Effective 2026-08-09 through 2026-09-27
Tue,Wed 17:50 Washington Dulles (IAD) 19:35 Denver (DEN) Southwest Airlines WN 4708 Non-stop Boeing 737 MAX 8 (7M8) 3:45 Effective 2026-08-04 through 2026-09-30
Non-Direct Flights:
Thu 12:41 Washington Dulles (IAD) 19:40 Denver (DEN) United Airlines UA 649 1-stop Airbus A319 (319) 8:59 Operates only on 2026-02-12
Mon,Wed-Fri,Sun 12:41 Washington Dulles (IAD) 19:40 Denver (DEN) United Airlines UA 649 1-stop Boeing 737-800 (738) 8:59 Effective 2026-02-13 through 2026-02-22
Wed-Fri,Sun 12:41 Washington Dulles (IAD) 19:40 Denver (DEN) United Airlines UA 649 1-stop Boeing 737-800 (738) 8:59 Effective 2026-02-25 through 2026-03-04
Tue 09:00 Washington Dulles (IAD) 14:36 Denver (DEN) United Airlines UA 683 1-stop Boeing 737-900 (739) 7:36 Operates only on 2026-01-06
Tue,Wed 09:00 Washington Dulles (IAD) 14:36 Denver (DEN) United Airlines UA 683 1-stop Boeing 737-800 (738) 7:36 Effective 2026-01-07 through 2026-01-14
Mon,Thu,Fri,Sun 09:00 Washington Dulles (IAD) 14:36 Denver (DEN) United Airlines UA 683 1-stop Boeing 737-900 (739) 7:36 Effective 2026-01-08 through 2026-01-16
Sat 09:00 Washington Dulles (IAD) 14:35 Denver (DEN) United Airlines UA 683 1-stop Boeing 737 MAX 8 (7M8) 7:35 Effective 2026-01-10 through 2026-02-07
Tue,Wed,Sun 09:00 Washington Dulles (IAD) 14:36 Denver (DEN) United Airlines UA 683 1-stop Boeing 737-800 (738) 7:36 Effective 2026-01-18 through 2026-01-21
Mon,Thu,Fri,Sun 09:00 Washington Dulles (IAD) 14:36 Denver (DEN) United Airlines UA 683 1-stop Boeing 737-900 (739) 7:36 Effective 2026-01-19 through 2026-02-09
Tue,Wed 09:00 Washington Dulles (IAD) 14:36 Denver (DEN) United Airlines UA 683 1-stop Boeing 737-800 (738) 7:36 Effective 2026-01-27 through 2026-02-03
Wed 09:00 Washington Dulles (IAD) 14:52 Denver (DEN) United Airlines UA 683 1-stop Boeing 737-800 (738) 7:52 Operates only on 2026-02-04
Tue,Wed 09:00 Washington Dulles (IAD) 14:36 Denver (DEN) United Airlines UA 683 1-stop Boeing 737-800 (738) 7:36 Effective 2026-02-10 through 2026-02-11
Thu 08:35 Washington Dulles (IAD) 14:53 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-800 (738) 8:18 Operates only on 2026-03-05
Fri 08:35 Washington Dulles (IAD) 14:53 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-900 (739) 8:18 Operates only on 2026-03-06
Mon-Thu,Sun 08:35 Washington Dulles (IAD) 16:45 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-800 (738) 10:10 Effective 2026-03-08 through 2026-03-26
Fri 08:35 Washington Dulles (IAD) 16:45 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-900 (739) 10:10 Effective 2026-03-13 through 2026-03-27
Daily 08:35 Washington Dulles (IAD) 16:45 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-800 (738) 10:10 Effective 2026-03-29 through 2026-04-29
Sat 08:40 Washington Dulles (IAD) 14:53 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-900 (739) 8:13 Operates only on 2026-03-07
Sat 08:40 Washington Dulles (IAD) 16:45 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-900 (739) 10:05 Effective 2026-03-14 through 2026-03-28
Daily 08:45 Washington Dulles (IAD) 16:30 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-900 (739) 9:45 Effective 2026-05-21 through 2026-10-24
Daily 08:45 Washington Dulles (IAD) 16:50 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-900 (739) 10:05 Effective from 2026-10-25
Daily 08:50 Washington Dulles (IAD) 16:45 Denver (DEN) United Airlines UA 709 1-stop Boeing 737-800 (738) 9:55 Effective 2026-04-30 through 2026-05-20
Mon-Thu,Sat 08:45 Washington Dulles (IAD) 16:10 Denver (DEN) United Airlines UA 1323 1-stop Boeing 737 MAX 9 (7M9) 9:25 Effective 2026-03-05 through 2026-03-12
Fri 08:45 Washington Dulles (IAD) 16:10 Denver (DEN) United Airlines UA 1323 1-stop Boeing 737-900 (739) 9:25 Operates only on 2026-03-06
Sun 08:45 Washington Dulles (IAD) 16:10 Denver (DEN) United Airlines UA 1323 1-stop Boeing 737-900 (739) 9:25 Effective 2026-03-08 through 2026-03-22
Mon-Sat 08:45 Washington Dulles (IAD) 16:10 Denver (DEN) United Airlines UA 1323 1-stop Boeing 737 MAX 9 (7M9) 9:25 Effective 2026-03-13 through 2026-03-28
Daily 08:45 Washington Dulles (IAD) 16:20 Denver (DEN) United Airlines UA 1323 1-stop Boeing 737-900 (739) 9:35 Effective 2026-03-29 through 2026-04-29
Daily 08:45 Washington Dulles (IAD) 16:45 Denver (DEN) United Airlines UA 1323 1-stop Boeing 737 MAX 9 (7M9) 10:00 Effective 2026-04-30 through 2026-05-20
Daily 08:45 Washington Dulles (IAD) 16:10 Denver (DEN) United Airlines UA 1323 1-stop Boeing 777 (777) 9:25 Effective 2026-05-21 through 2026-06-24
Daily 08:45 Washington Dulles (IAD) 16:40 Denver (DEN) United Airlines UA 1323 1-stop Boeing 777 (777) 9:55 Effective from 2026-10-25
Mon,Thu-Sun 06:00 Washington Dulles (IAD) 12:50 Denver (DEN) United Airlines UA 1409 1-stop Boeing 737 MAX 9 (7M9) 8:50 Effective 2026-03-05 through 2026-03-28
Mon,Wed,Thu,Sun 08:15 Washington Dulles (IAD) 14:11 Denver (DEN) United Airlines UA 1485 1-stop Boeing 737-900 (739) 7:56 Effective 2026-03-05 through 2026-03-12
Fri 08:15 Washington Dulles (IAD) 14:11 Denver (DEN) United Airlines UA 1485 1-stop Boeing 737 MAX 9 (7M9) 7:56 Effective 2026-03-06 through 2026-03-13
Tue 08:15 Washington Dulles (IAD) 14:11 Denver (DEN) United Airlines UA 1485 1-stop Airbus A320 (320) 7:56 Effective 2026-03-10 through 2026-03-24
Wed,Fri,Sun 08:15 Washington Dulles (IAD) 14:11 Denver (DEN) United Airlines UA 1485 1-stop Boeing 737 MAX 9 (7M9) 7:56 Effective 2026-03-15 through 2026-03-22
Mon,Thu 08:15 Washington Dulles (IAD) 14:11 Denver (DEN) United Airlines UA 1485 1-stop Boeing 737-900 (739) 7:56 Effective 2026-03-16 through 2026-03-26
Wed 08:15 Washington Dulles (IAD) 14:11 Denver (DEN) United Airlines UA 1485 1-stop Boeing 737-700 (73G) 7:56 Operates only on 2026-03-25
Fri 08:15 Washington Dulles (IAD) 14:11 Denver (DEN) United Airlines UA 1485 1-stop Boeing 737 MAX 9 (7M9) 7:56 Operates only on 2026-03-27
Daily 12:35 Washington Dulles (IAD) 18:00 Denver (DEN) United Airlines UA 1498 1-stop Boeing 737 MAX 8 (7M8) 7:25 Effective from 2026-10-25
Daily 12:35 Washington Dulles (IAD) 21:17 Denver (DEN) United Airlines UA 1637 1-stop Boeing 737-900 (739) 10:42 Effective from 2026-10-25
Mon,Thu,Fri,Sun 08:15 Washington Dulles (IAD) 14:49 Denver (DEN) United Airlines UA 1789 1-stop Boeing 737-700 (73G) 8:34 Effective 2026-01-08 through 2026-01-16
Mon,Thu,Fri,Sun 08:15 Washington Dulles (IAD) 14:49 Denver (DEN) United Airlines UA 1789 1-stop Boeing 737-700 (73G) 8:34 Effective 2026-01-19 through 2026-02-09

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A domestic route departing from the Washington Dulles airport (IAD) and arriving at Denver airport (DEN).
The flight distance is 1448 miles, or 2331 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 4:21.

Return (DEN-IAD) flights

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

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4583

17:40

Washington Dulles (IAD)

19:55

Denver (DEN)

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4583

17:40

Washington Dulles (IAD)

19:55

Denver (DEN)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 4:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4583

19:00

Washington Dulles (IAD)

21:05

Denver (DEN)

Effective 2026-02-12 through 2026-02-13

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4583

19:00

Washington Dulles (IAD)

21:05

Denver (DEN)

Operates only on 2026-02-16

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN4583

19:00

Washington Dulles (IAD)

21:05

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 4:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4708

17:00

Washington Dulles (IAD)

18:40

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

Southwest Airlines WN4708

17:30

Washington Dulles (IAD)

19:15

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN4708

17:50

Washington Dulles (IAD)

19:35

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:45, non-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

United Airlines UA649

12:41

Washington Dulles (IAD)

19:40

Denver (DEN)

Operates only on 2026-02-12

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 8:59, 1-stop
Airbus A319 (319)

Non-Direct Flights:

United Airlines UA649

12:41

Washington Dulles (IAD)

19:40

Denver (DEN)

Effective 2026-02-13 through 2026-02-22

Mon

Tue
-

Wed

Thu

Fri

Sat
-

Sun

Duration: 8:59, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA649

12:41

Washington Dulles (IAD)

19:40

Denver (DEN)

Effective 2026-02-25 through 2026-03-04

Mon
-

Tue
-

Wed

Thu

Fri

Sat
-

Sun

Duration: 8:59, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA683

09:00

Washington Dulles (IAD)

14:36

Denver (DEN)

Operates only on 2026-01-06

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:36, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA683

09:00

Washington Dulles (IAD)

14:36

Denver (DEN)

Effective 2026-01-07 through 2026-01-14

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:36, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA683

09:00

Washington Dulles (IAD)

14:36

Denver (DEN)

Effective 2026-01-08 through 2026-01-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 7:36, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA683

09:00

Washington Dulles (IAD)

14:35

Denver (DEN)

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 7:35, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

United Airlines UA683

09:00

Washington Dulles (IAD)

14:36

Denver (DEN)

Effective 2026-01-18 through 2026-01-21

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 7:36, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA683

09:00

Washington Dulles (IAD)

14:36

Denver (DEN)

Effective 2026-01-19 through 2026-02-09

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 7:36, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA683

09:00

Washington Dulles (IAD)

14:36

Denver (DEN)

Effective 2026-01-27 through 2026-02-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:36, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA683

09:00

Washington Dulles (IAD)

14:52

Denver (DEN)

Operates only on 2026-02-04

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:52, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA683

09:00

Washington Dulles (IAD)

14:36

Denver (DEN)

Effective 2026-02-10 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:36, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA709

08:35

Washington Dulles (IAD)

14:53

Denver (DEN)

Operates only on 2026-03-05

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 8:18, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA709

08:35

Washington Dulles (IAD)

14:53

Denver (DEN)

Operates only on 2026-03-06

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 8:18, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA709

08:35

Washington Dulles (IAD)

16:45

Denver (DEN)

Effective 2026-03-08 through 2026-03-26

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun

Duration: 10:10, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA709

08:35

Washington Dulles (IAD)

16:45

Denver (DEN)

Effective 2026-03-13 through 2026-03-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 10:10, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA709

08:35

Washington Dulles (IAD)

16:45

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 10:10, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA709

08:40

Washington Dulles (IAD)

14:53

Denver (DEN)

Operates only on 2026-03-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 8:13, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA709

08:40

Washington Dulles (IAD)

16:45

Denver (DEN)

Effective 2026-03-14 through 2026-03-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 10:05, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA709

08:45

Washington Dulles (IAD)

16:30

Denver (DEN)

Effective 2026-05-21 through 2026-10-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 9:45, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA709

08:45

Washington Dulles (IAD)

16:50

Denver (DEN)

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 10:05, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA709

08:50

Washington Dulles (IAD)

16:45

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 9:55, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA1323

08:45

Washington Dulles (IAD)

16:10

Denver (DEN)

Effective 2026-03-05 through 2026-03-12

Mon

Tue

Wed

Thu

Fri
-

Sat

Sun
-

Duration: 9:25, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA1323

08:45

Washington Dulles (IAD)

16:10

Denver (DEN)

Operates only on 2026-03-06

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 9:25, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA1323

08:45

Washington Dulles (IAD)

16:10

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 9:25, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA1323

08:45

Washington Dulles (IAD)

16:10

Denver (DEN)

Effective 2026-03-13 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun
-

Duration: 9:25, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA1323

08:45

Washington Dulles (IAD)

16:20

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 9:35, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA1323

08:45

Washington Dulles (IAD)

16:45

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 10:00, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA1323

08:45

Washington Dulles (IAD)

16:10

Denver (DEN)

Effective 2026-05-21 through 2026-06-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 9:25, 1-stop
Boeing 777 (777)

Non-Direct Flights:

United Airlines UA1323

08:45

Washington Dulles (IAD)

16:40

Denver (DEN)

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 9:55, 1-stop
Boeing 777 (777)

Non-Direct Flights:

United Airlines UA1409

06:00

Washington Dulles (IAD)

12:50

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Duration: 8:50, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA1485

08:15

Washington Dulles (IAD)

14:11

Denver (DEN)

Effective 2026-03-05 through 2026-03-12

Mon

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun

Duration: 7:56, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA1485

08:15

Washington Dulles (IAD)

14:11

Denver (DEN)

Effective 2026-03-06 through 2026-03-13

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 7:56, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA1485

08:15

Washington Dulles (IAD)

14:11

Denver (DEN)

Effective 2026-03-10 through 2026-03-24

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:56, 1-stop
Airbus A320 (320)

Non-Direct Flights:

United Airlines UA1485

08:15

Washington Dulles (IAD)

14:11

Denver (DEN)

Effective 2026-03-15 through 2026-03-22

Mon
-

Tue
-

Wed

Thu
-

Fri

Sat
-

Sun

Duration: 7:56, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA1485

08:15

Washington Dulles (IAD)

14:11

Denver (DEN)

Effective 2026-03-16 through 2026-03-26

Mon

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 7:56, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA1485

08:15

Washington Dulles (IAD)

14:11

Denver (DEN)

Operates only on 2026-03-25

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:56, 1-stop
Boeing 737-700 (73G)

Non-Direct Flights:

United Airlines UA1485

08:15

Washington Dulles (IAD)

14:11

Denver (DEN)

Operates only on 2026-03-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 7:56, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA1498

12:35

Washington Dulles (IAD)

18:00

Denver (DEN)

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 7:25, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

United Airlines UA1637

12:35

Washington Dulles (IAD)

21:17

Denver (DEN)

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 10:42, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA1789

08:15

Washington Dulles (IAD)

14:49

Denver (DEN)

Effective 2026-01-08 through 2026-01-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 8:34, 1-stop
Boeing 737-700 (73G)

Non-Direct Flights:

United Airlines UA1789

08:15

Washington Dulles (IAD)

14:49

Denver (DEN)

Effective 2026-01-19 through 2026-02-09

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 8:34, 1-stop
Boeing 737-700 (73G)

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A domestic route departing from the Washington Dulles airport (IAD) and arriving at Denver airport (DEN).
The flight distance is 1448 miles, or 2331 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 4:21.

Return (DEN-IAD) flights

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