All airlines flying from Ronald Reagan Washington (DCA) to Denver (DEN).

FLIGHT SCHEDULE
Non-Direct Flights:
Sun 16:50 Ronald Reagan Washington (DCA) 1 20:05 Denver (DEN) Southwest Airlines WN 3319 1-stop Boeing 737 MAX 8 (7M8) 5:15 Operates only on 2026-05-31
Mon,Thu,Fri 11:35 Ronald Reagan Washington (DCA) 1 15:45 Denver (DEN) Southwest Airlines WN 3438 1-stop Boeing 737-700 (Scimitar Winglets) 6:10 Effective 2026-04-09 through 2026-06-01
Sun 15:30 Ronald Reagan Washington (DCA) 1 20:00 Denver (DEN) Southwest Airlines WN 3491 1-stop Boeing 737-700 (Scimitar Winglets) 6:30 Effective 2026-04-12 through 2026-05-17
Sun 15:30 Ronald Reagan Washington (DCA) 1 20:00 Denver (DEN) Southwest Airlines WN 3491 1-stop Boeing 737-700 (Scimitar Winglets) 6:30 Operates only on 2026-05-31
Mon,Thu,Fri 10:35 Ronald Reagan Washington (DCA) 1 14:35 Denver (DEN) Southwest Airlines WN 3968 1-stop Boeing 737-700 (Scimitar Winglets) 6:00 Effective 2026-04-09 through 2026-06-01
Sun 13:40 Ronald Reagan Washington (DCA) 1 19:40 Denver (DEN) Southwest Airlines WN 1676 2-stop Boeing 737-700 (Scimitar Winglets) 8:00 Operates only on 2026-05-24
Mon-Fri,Sun 06:30 Ronald Reagan Washington (DCA) 2 14:55 Denver (DEN) United Airlines UA 1793 2-stop Boeing 737-700 (73G) 10:25 Valid until 2026-01-06
Daily 06:30 Ronald Reagan Washington (DCA) 2 14:55 Denver (DEN) United Airlines UA 1793 2-stop Boeing 737-800 (738) 10:25 Effective 2026-01-07 through 2026-02-03
Daily 06:30 Ronald Reagan Washington (DCA) 2 14:55 Denver (DEN) United Airlines UA 1793 2-stop Boeing 737-800 (738) 10:25 Effective 2026-02-05 through 2026-02-11
Daily 10:30 Ronald Reagan Washington (DCA) 2 19:26 Denver (DEN) United Airlines UA 2201 2-stop Airbus A320 (320) 10:56 Effective from 2026-05-21
Mon,Thu,Fri 07:25 Ronald Reagan Washington (DCA) 1 20:45 Denver (DEN) Southwest Airlines WN 169 5-stop Boeing 737-700 (Scimitar Winglets) 15:20 Effective 2026-04-09 through 2026-06-01
Direct Codeshare Flights:
Daily 16:07 Ronald Reagan Washington (DCA) 2 18:24 Denver (DEN) Air Canada AC 3643 Non-stop Airbus A321neo (32Q) 4:17 Effective 2026-03-29 through 2026-04-29 Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:07 Ronald Reagan Washington (DCA) 2 18:07 Denver (DEN) Air Canada AC 3643 Non-stop Airbus A321neo (32Q) 4:00 Effective 2026-04-30 through 2026-05-20 Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:07 Ronald Reagan Washington (DCA) 2 18:07 Denver (DEN) Air Canada AC 3643 Non-stop Boeing 757-300 (753) 4:00 Effective from 2026-05-21 Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:11 Ronald Reagan Washington (DCA) 2 18:25 Denver (DEN) Air Canada AC 3643 Non-stop Airbus A321neo (32Q) 4:14 Effective 2026-01-06 through 2026-02-11 Codeshare flight, operated by United Airlines.(UA 746)
Mon-Fri,Sun 16:11 Ronald Reagan Washington (DCA) 2 18:29 Denver (DEN) Air Canada AC 3643 Non-stop Airbus A321neo (32Q) 4:18 Effective 2026-02-12 through 2026-02-27 Codeshare flight, operated by United Airlines.(UA 746)
Sat 16:11 Ronald Reagan Washington (DCA) 2 18:29 Denver (DEN) Air Canada AC 3643 Non-stop Boeing 737 MAX 8 (7M8) 4:18 Effective 2026-02-14 through 2026-02-21 Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:11 Ronald Reagan Washington (DCA) 2 18:29 Denver (DEN) Air Canada AC 3643 Non-stop Airbus A321neo (32Q) 4:18 Effective 2026-02-28 through 2026-03-28 Codeshare flight, operated by United Airlines.(UA 746)
Daily 16:17 Ronald Reagan Washington (DCA) 2 18:25 Denver (DEN) Air Canada AC 3643 Non-stop Boeing 757-300 (753) 4:08 Valid until 2026-01-05 Codeshare flight, operated by United Airlines.(UA 746)

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A domestic route departing from the Ronald Reagan Washington airport (DCA) and arriving at Denver airport (DEN).
The flight distance is 1471 miles, or 2368 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 4:00 and 4:22.

Return (DEN-DCA) flights

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All airlines flying from Ronald Reagan Washington (DCA) to Denver (DEN).

FLIGHT SCHEDULE

Non-Direct Flights:

Southwest Airlines WN3319

16:50

Ronald Reagan Washington (DCA) 1

20:05

Denver (DEN)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:15, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN3438

11:35

Ronald Reagan Washington (DCA) 1

15:45

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 6:10, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3491

15:30

Ronald Reagan Washington (DCA) 1

20:00

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 6:30, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3491

15:30

Ronald Reagan Washington (DCA) 1

20:00

Denver (DEN)

Operates only on 2026-05-31

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 6:30, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN3968

10:35

Ronald Reagan Washington (DCA) 1

14:35

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 6:00, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1676

13:40

Ronald Reagan Washington (DCA) 1

19:40

Denver (DEN)

Operates only on 2026-05-24

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Non-Direct Flights:

United Airlines UA1793

06:30

Ronald Reagan Washington (DCA) 2

14:55

Denver (DEN)

Valid until 2026-01-06

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 10:25, 2-stop
Boeing 737-700 (73G)

Non-Direct Flights:

United Airlines UA1793

06:30

Ronald Reagan Washington (DCA) 2

14:55

Denver (DEN)

Effective 2026-01-07 through 2026-02-03

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 10:25, 2-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA1793

06:30

Ronald Reagan Washington (DCA) 2

14:55

Denver (DEN)

Effective 2026-02-05 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 10:25, 2-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA2201

10:30

Ronald Reagan Washington (DCA) 2

19:26

Denver (DEN)

Effective from 2026-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 10:56, 2-stop
Airbus A320 (320)

Non-Direct Flights:

Southwest Airlines WN169

07:25

Ronald Reagan Washington (DCA) 1

20:45

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 15:20, 5-stop
Boeing 737-700 (Scimitar Winglets)

Direct Codeshare Flights:

Air Canada AC3643

16:07

Ronald Reagan Washington (DCA) 2

18:24

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 746)

Duration: 4:17, non-stop
Airbus A321neo (32Q)

Direct Codeshare Flights:

Air Canada AC3643

16:07

Ronald Reagan Washington (DCA) 2

18:07

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 746)

Duration: 4:00, non-stop
Airbus A321neo (32Q)

Direct Codeshare Flights:

Air Canada AC3643

16:07

Ronald Reagan Washington (DCA) 2

18:07

Denver (DEN)

Effective from 2026-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 746)

Duration: 4:00, non-stop
Boeing 757-300 (753)

Direct Codeshare Flights:

Air Canada AC3643

16:11

Ronald Reagan Washington (DCA) 2

18:25

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 746)

Duration: 4:14, non-stop
Airbus A321neo (32Q)

Direct Codeshare Flights:

Air Canada AC3643

16:11

Ronald Reagan Washington (DCA) 2

18:29

Denver (DEN)

Effective 2026-02-12 through 2026-02-27

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by United Airlines. (UA 746)

Duration: 4:18, non-stop
Airbus A321neo (32Q)

Direct Codeshare Flights:

Air Canada AC3643

16:11

Ronald Reagan Washington (DCA) 2

18:29

Denver (DEN)

Effective 2026-02-14 through 2026-02-21

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 746)

Duration: 4:18, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Air Canada AC3643

16:11

Ronald Reagan Washington (DCA) 2

18:29

Denver (DEN)

Effective 2026-02-28 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 746)

Duration: 4:18, non-stop
Airbus A321neo (32Q)

Direct Codeshare Flights:

Air Canada AC3643

16:17

Ronald Reagan Washington (DCA) 2

18:25

Denver (DEN)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 746)

Duration: 4:08, non-stop
Boeing 757-300 (753)

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A domestic route departing from the Ronald Reagan Washington airport (DCA) and arriving at Denver airport (DEN).
The flight distance is 1471 miles, or 2368 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 4:00 and 4:22.

Return (DEN-DCA) flights

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