All airlines flying from Houston George Bush (IAH) to Denver (DEN).

FLIGHT SCHEDULE
Direct Flights:
Mon,Thu,Fri,Sun 06:45 Houston George Bush (IAH) A 08:27 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A320neo (32N) 2:42 Effective 2026-01-08 through 2026-01-12
Mon,Thu,Fri,Sun 06:45 Houston George Bush (IAH) A 08:26 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A320neo (32N) 2:41 Effective 2026-01-22 through 2026-02-09
Tue,Wed 06:45 Houston George Bush (IAH) A 08:26 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A320neo (32N) 2:41 Effective 2026-02-10 through 2026-02-11
Tue,Wed,Sat 06:45 Houston George Bush (IAH) A 08:26 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A321neo (32Q) 2:41 Effective 2026-02-14 through 2026-03-04
Daily 06:45 Houston George Bush (IAH) A 08:26 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A320neo (32N) 2:41 Effective 2026-03-06 through 2026-03-31
Daily 06:45 Houston George Bush (IAH) A 08:27 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A321 (321) 2:42 Effective 2026-04-01 through 2026-04-13
Wed 07:35 Houston George Bush (IAH) A 09:20 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A320neo (32N) 2:45 Operates only on 2026-01-14
Wed 08:15 Houston George Bush (IAH) A 09:57 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A320neo (32N) 2:42 Operates only on 2026-01-07
Tue,Sat 08:35 Houston George Bush (IAH) A 10:17 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A320neo (32N) 2:42 Effective 2026-01-06 through 2026-01-10
Tue 08:35 Houston George Bush (IAH) A 10:20 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A321neo (32Q) 2:45 Operates only on 2026-01-13
Sat 08:35 Houston George Bush (IAH) A 10:20 Denver (DEN) Frontier Airlines F9 3229 Non-stop Airbus A320neo (32N) 2:45 Operates only on 2026-01-17
Thu 21:14 Houston George Bush (IAH) A 22:57 Denver (DEN) Frontier Airlines F9 4855 Non-stop Airbus A321neo (32Q) 2:43 Operates only on 2026-02-26
Fri 21:53 Houston George Bush (IAH) A 23:36 Denver (DEN) Frontier Airlines F9 4855 Non-stop Airbus A320neo (32N) 2:43 Effective 2026-02-13 through 2026-02-20
Fri 22:04 Houston George Bush (IAH) A 23:46 Denver (DEN) Frontier Airlines F9 4855 Non-stop Airbus A320neo (32N) 2:42 Operates only on 2026-02-27
Mon-Wed,Fri,Sat 22:56 Houston George Bush (IAH) A 00:38 Denver (DEN) Frontier Airlines F9 4855 Non-stop Airbus A321 (321) 2:42 Effective 2026-03-06 through 2026-03-31 The flight arrives 1 day after departure.
Thu,Sun 22:56 Houston George Bush (IAH) A 00:38 Denver (DEN) Frontier Airlines F9 4855 Non-stop Airbus A320neo (32N) 2:42 Effective 2026-03-08 through 2026-03-29 The flight arrives 1 day after departure.
Non-Direct Flights:
Mon,Thu,Fri 08:20 Houston George Bush (IAH) C 12:43 Denver (DEN) United Airlines UA 631 1-stop Airbus A319 (319) 5:23 Effective 2026-02-12 through 2026-02-19
Mon 08:20 Houston George Bush (IAH) C 12:43 Denver (DEN) United Airlines UA 631 1-stop Airbus A319 (319) 5:23 Effective 2026-02-23 through 2026-03-02
Thu 12:25 Houston George Bush (IAH) C 19:14 Denver (DEN) United Airlines UA 1172 1-stop Boeing 737 MAX 8 (7M8) 7:49 Operates only on 2026-05-21
Mon,Wed-Sun 12:25 Houston George Bush (IAH) C 19:14 Denver (DEN) United Airlines UA 1172 1-stop Boeing 737 MAX 8 (7M8) 7:49 Effective 2026-08-12 through 2026-08-17
Daily 16:20 Houston George Bush (IAH) C 22:52 Denver (DEN) United Airlines UA 1743 1-stop Boeing 737 MAX 9 (7M9) 7:32 Valid until 2026-01-05
Mon-Fri 07:25 Houston George Bush (IAH) C 13:26 Denver (DEN) United Airlines UA 2003 1-stop Boeing 737-900 (739) 7:01 Valid until 2026-01-05
Thu,Fri 11:55 Houston George Bush (IAH) C 16:39 Denver (DEN) United Airlines UA 2385 1-stop Boeing 737-800 (738) 5:44 Effective 2026-02-12 through 2026-02-13
Sun 11:55 Houston George Bush (IAH) C 16:38 Denver (DEN) United Airlines UA 2385 1-stop Boeing 737 MAX 8 (7M8) 5:43 Effective 2026-02-15 through 2026-03-01
Mon,Wed-Fri 11:55 Houston George Bush (IAH) C 16:38 Denver (DEN) United Airlines UA 2385 1-stop Boeing 737-800 (738) 5:43 Effective 2026-02-16 through 2026-02-20
Mon,Tue 11:55 Houston George Bush (IAH) C 18:06 Denver (DEN) United Airlines UA 2385 1-stop Boeing 737-800 (738) 7:11 Effective 2026-02-17 through 2026-03-03
Wed-Fri 11:55 Houston George Bush (IAH) C 16:38 Denver (DEN) United Airlines UA 2385 1-stop Boeing 737-800 (738) 5:43 Effective 2026-02-25 through 2026-03-04
Daily 09:30 Houston George Bush (IAH) C 16:31 Denver (DEN) United Airlines UA 2491 1-stop Boeing 737-900 (739) 8:01 Effective 2026-01-06 through 2026-02-02
Tue 09:30 Houston George Bush (IAH) C 16:30 Denver (DEN) United Airlines UA 2491 1-stop Boeing 737-900 (739) 8:00 Operates only on 2026-02-03
Daily 09:30 Houston George Bush (IAH) C 16:31 Denver (DEN) United Airlines UA 2491 1-stop Boeing 737-900 (739) 8:01 Effective 2026-02-04 through 2026-02-11
Tue-Sun 07:20 Houston George Bush (IAH) C 14:53 Denver (DEN) United Airlines UA 2614 1-stop Boeing 737-800 (738) 8:33 Effective 2026-03-08 through 2026-03-28
Mon 07:20 Houston George Bush (IAH) C 14:53 Denver (DEN) United Airlines UA 2614 1-stop Boeing 737-800 (738) 8:33 Effective 2026-03-09 through 2026-03-23
Tue 06:20 Houston George Bush (IAH) C 14:43 Denver (DEN) United Airlines UA 2616 1-stop Airbus A321neo (32Q) 9:23 Operates only on 2026-01-06
Daily 06:20 Houston George Bush (IAH) C 14:51 Denver (DEN) United Airlines UA 2616 1-stop Airbus A321neo (32Q) 9:31 Effective 2026-01-07 through 2026-02-02
Tue 06:20 Houston George Bush (IAH) C 14:51 Denver (DEN) United Airlines UA 2616 1-stop Boeing 737 MAX 9 (7M9) 9:31 Operates only on 2026-02-03
Mon,Tue,Thu-Sun 06:20 Houston George Bush (IAH) C 14:51 Denver (DEN) United Airlines UA 2616 1-stop Airbus A321neo (32Q) 9:31 Effective 2026-02-05 through 2026-02-10
Wed 06:20 Houston George Bush (IAH) C 14:50 Denver (DEN) United Airlines UA 2616 1-stop Airbus A321neo (32Q) 9:30 Operates only on 2026-02-11
Mon,Thu-Sun 06:30 Houston George Bush (IAH) C 14:48 Denver (DEN) United Airlines UA 2616 1-stop Airbus A321neo (32Q) 9:18 Effective 2026-02-12 through 2026-03-02
Tue 06:30 Houston George Bush (IAH) C 14:48 Denver (DEN) United Airlines UA 2616 1-stop Boeing 737 MAX 9 (7M9) 9:18 Effective 2026-02-17 through 2026-03-03
Wed 06:30 Houston George Bush (IAH) C 14:48 Denver (DEN) United Airlines UA 2616 1-stop Boeing 737-900 (739) 9:18 Effective 2026-02-18 through 2026-03-04
Daily 09:46 Houston George Bush (IAH) C 18:22 Denver (DEN) United Airlines UA 2852 1-stop Boeing 737 MAX 9 (7M9) 9:36 Effective 2026-03-05 through 2026-03-28
Direct Codeshare Flights:
Tue,Sun 14:38 Houston George Bush (IAH) C 16:21 Denver (DEN) Avianca AV 2129 Non-stop Boeing 757-300 (753) 2:43 Effective 2026-01-20 through 2026-01-25 Codeshare flight, operated by United Airlines.(UA 774)
Tue,Thu,Sat 14:38 Houston George Bush (IAH) C 16:21 Denver (DEN) Avianca AV 2129 Non-stop Boeing 757-300 (753) 2:43 Effective 2026-02-03 through 2026-02-10 Codeshare flight, operated by United Airlines.(UA 774)
Daily 14:40 Houston George Bush (IAH) C 16:26 Denver (DEN) Avianca AV 2129 Non-stop Airbus A321neo (32Q) 2:46 Effective 2026-03-29 through 2026-04-29 Codeshare flight, operated by United Airlines.(UA 1246)
Daily 14:48 Houston George Bush (IAH) C 16:24 Denver (DEN) Avianca AV 2129 Non-stop Airbus A321neo (32Q) 2:36 Effective 2026-04-30 through 2026-05-20 Codeshare flight, operated by United Airlines.(UA 1246)
Daily 14:48 Houston George Bush (IAH) C 16:24 Denver (DEN) Avianca AV 2129 Non-stop Boeing 757-300 (753) 2:36 Effective from 2026-05-21 Codeshare flight, operated by United Airlines.(UA 1246)
Thu,Sat 14:50 Houston George Bush (IAH) C 16:34 Denver (DEN) Avianca AV 2129 Non-stop Boeing 757-300 (753) 2:44 Effective 2026-03-05 through 2026-03-07 Codeshare flight, operated by United Airlines.(UA 1246)
Daily 14:50 Houston George Bush (IAH) C 16:34 Denver (DEN) Avianca AV 2129 Non-stop Boeing 757-300 (753) 2:44 Effective 2026-03-08 through 2026-03-28 Codeshare flight, operated by United Airlines.(UA 1246)
Tue,Thu,Sat 14:53 Houston George Bush (IAH) C 16:33 Denver (DEN) Avianca AV 2129 Non-stop Boeing 757-300 (753) 2:40 Effective 2026-02-12 through 2026-03-03 Codeshare flight, operated by United Airlines.(UA 1246)
Sat 15:00 Houston George Bush (IAH) C 16:44 Denver (DEN) Avianca AV 2129 Non-stop Airbus A321neo (32Q) 2:44 Operates only on 2026-01-03 Codeshare flight, operated by United Airlines.(UA 241)

1 2 3 4 5 6 7 ... 11 12 13

A domestic route departing from the Houston George Bush airport (IAH) and arriving at Denver airport (DEN).
The flight distance is 861 miles, or 1386 km.
The timezone of the departure airport is UTC-6 , 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 2:25 and 2:56.

Return (DEN-IAH) flights

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All airlines flying from Houston George Bush (IAH) to Denver (DEN).

FLIGHT SCHEDULE

Direct Flights:

Frontier Airlines F93229

06:45

Houston George Bush (IAH) A

08:27

Denver (DEN)

Effective 2026-01-08 through 2026-01-12

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:42, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F93229

06:45

Houston George Bush (IAH) A

08:26

Denver (DEN)

Effective 2026-01-22 through 2026-02-09

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 2:41, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F93229

06:45

Houston George Bush (IAH) A

08:26

Denver (DEN)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:41, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F93229

06:45

Houston George Bush (IAH) A

08:26

Denver (DEN)

Effective 2026-02-14 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:41, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F93229

06:45

Houston George Bush (IAH) A

08:26

Denver (DEN)

Effective 2026-03-06 through 2026-03-31

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:41, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F93229

06:45

Houston George Bush (IAH) A

08:27

Denver (DEN)

Effective 2026-04-01 through 2026-04-13

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:42, non-stop
Airbus A321 (321)

Direct Flights:

Frontier Airlines F93229

07:35

Houston George Bush (IAH) A

09:20

Denver (DEN)

Operates only on 2026-01-14

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:45, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F93229

08:15

Houston George Bush (IAH) A

09:57

Denver (DEN)

Operates only on 2026-01-07

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:42, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F93229

08:35

Houston George Bush (IAH) A

10:17

Denver (DEN)

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

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:42, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F93229

08:35

Houston George Bush (IAH) A

10:20

Denver (DEN)

Operates only on 2026-01-13

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:45, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F93229

08:35

Houston George Bush (IAH) A

10:20

Denver (DEN)

Operates only on 2026-01-17

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:45, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F94855

21:14

Houston George Bush (IAH) A

22:57

Denver (DEN)

Operates only on 2026-02-26

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 2:43, non-stop
Airbus A321neo (32Q)

Direct Flights:

Frontier Airlines F94855

21:53

Houston George Bush (IAH) A

23:36

Denver (DEN)

Effective 2026-02-13 through 2026-02-20

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 2:43, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F94855

22:04

Houston George Bush (IAH) A

23:46

Denver (DEN)

Operates only on 2026-02-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 2:42, non-stop
Airbus A320neo (32N)

Direct Flights:

Frontier Airlines F94855

22:56

Houston George Bush (IAH) A

00:38(+1)

Denver (DEN)

Effective 2026-03-06 through 2026-03-31

Mon

Tue

Wed

Thu
-

Fri

Sat

Sun
-

Duration: 2:42, non-stop
Airbus A321 (321)
The flight arrives 1 day after departure.

Direct Flights:

Frontier Airlines F94855

22:56

Houston George Bush (IAH) A

00:38(+1)

Denver (DEN)

Effective 2026-03-08 through 2026-03-29

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun

Duration: 2:42, non-stop
Airbus A320neo (32N)
The flight arrives 1 day after departure.

Non-Direct Flights:

United Airlines UA631

08:20

Houston George Bush (IAH) C

12:43

Denver (DEN)

Effective 2026-02-12 through 2026-02-19

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 5:23, 1-stop
Airbus A319 (319)

Non-Direct Flights:

United Airlines UA631

08:20

Houston George Bush (IAH) C

12:43

Denver (DEN)

Effective 2026-02-23 through 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 5:23, 1-stop
Airbus A319 (319)

Non-Direct Flights:

United Airlines UA1172

12:25

Houston George Bush (IAH) C

19:14

Denver (DEN)

Operates only on 2026-05-21

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 7:49, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

United Airlines UA1172

12:25

Houston George Bush (IAH) C

19:14

Denver (DEN)

Effective 2026-08-12 through 2026-08-17

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Duration: 7:49, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

United Airlines UA1743

16:20

Houston George Bush (IAH) C

22:52

Denver (DEN)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 7:32, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA2003

07:25

Houston George Bush (IAH) C

13:26

Denver (DEN)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 7:01, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA2385

11:55

Houston George Bush (IAH) C

16:39

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 5:44, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA2385

11:55

Houston George Bush (IAH) C

16:38

Denver (DEN)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 5:43, 1-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

United Airlines UA2385

11:55

Houston George Bush (IAH) C

16:38

Denver (DEN)

Effective 2026-02-16 through 2026-02-20

Mon

Tue
-

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 5:43, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA2385

11:55

Houston George Bush (IAH) C

18:06

Denver (DEN)

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

Mon

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:11, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA2385

11:55

Houston George Bush (IAH) C

16:38

Denver (DEN)

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

Mon
-

Tue
-

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 5:43, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA2491

09:30

Houston George Bush (IAH) C

16:31

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 8:01, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA2491

09:30

Houston George Bush (IAH) C

16:30

Denver (DEN)

Operates only on 2026-02-03

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 8:00, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA2491

09:30

Houston George Bush (IAH) C

16:31

Denver (DEN)

Effective 2026-02-04 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 8:01, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA2614

07:20

Houston George Bush (IAH) C

14:53

Denver (DEN)

Effective 2026-03-08 through 2026-03-28

Mon
-

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 8:33, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA2614

07:20

Houston George Bush (IAH) C

14:53

Denver (DEN)

Effective 2026-03-09 through 2026-03-23

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 8:33, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA2616

06:20

Houston George Bush (IAH) C

14:43

Denver (DEN)

Operates only on 2026-01-06

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 9:23, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

United Airlines UA2616

06:20

Houston George Bush (IAH) C

14:51

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 9:31, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

United Airlines UA2616

06:20

Houston George Bush (IAH) C

14:51

Denver (DEN)

Operates only on 2026-02-03

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 9:31, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA2616

06:20

Houston George Bush (IAH) C

14:51

Denver (DEN)

Effective 2026-02-05 through 2026-02-10

Mon

Tue

Wed
-

Thu

Fri

Sat

Sun

Duration: 9:31, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

United Airlines UA2616

06:20

Houston George Bush (IAH) C

14:50

Denver (DEN)

Operates only on 2026-02-11

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 9:30, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

United Airlines UA2616

06:30

Houston George Bush (IAH) C

14:48

Denver (DEN)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat

Sun

Duration: 9:18, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

United Airlines UA2616

06:30

Houston George Bush (IAH) C

14:48

Denver (DEN)

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

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 9:18, 1-stop
Boeing 737 MAX 9 (7M9)

Non-Direct Flights:

United Airlines UA2616

06:30

Houston George Bush (IAH) C

14:48

Denver (DEN)

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

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 9:18, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

United Airlines UA2852

09:46

Houston George Bush (IAH) C

18:22

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 9:36, 1-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

Avianca AV2129

14:38

Houston George Bush (IAH) C

16:21

Denver (DEN)

Effective 2026-01-20 through 2026-01-25

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Codeshare flight, operated by United Airlines. (UA 774)

Duration: 2:43, non-stop
Boeing 757-300 (753)

Direct Codeshare Flights:

Avianca AV2129

14:38

Houston George Bush (IAH) C

16:21

Denver (DEN)

Effective 2026-02-03 through 2026-02-10

Mon
-

Tue

Wed
-

Thu

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 774)

Duration: 2:43, non-stop
Boeing 757-300 (753)

Direct Codeshare Flights:

Avianca AV2129

14:40

Houston George Bush (IAH) C

16:26

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 1246)

Duration: 2:46, non-stop
Airbus A321neo (32Q)

Direct Codeshare Flights:

Avianca AV2129

14:48

Houston George Bush (IAH) C

16:24

Denver (DEN)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 1246)

Duration: 2:36, non-stop
Airbus A321neo (32Q)

Direct Codeshare Flights:

Avianca AV2129

14:48

Houston George Bush (IAH) C

16:24

Denver (DEN)

Effective from 2026-05-21

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 1246)

Duration: 2:36, non-stop
Boeing 757-300 (753)

Direct Codeshare Flights:

Avianca AV2129

14:50

Houston George Bush (IAH) C

16:34

Denver (DEN)

Effective 2026-03-05 through 2026-03-07

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 1246)

Duration: 2:44, non-stop
Boeing 757-300 (753)

Direct Codeshare Flights:

Avianca AV2129

14:50

Houston George Bush (IAH) C

16:34

Denver (DEN)

Effective 2026-03-08 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 1246)

Duration: 2:44, non-stop
Boeing 757-300 (753)

Direct Codeshare Flights:

Avianca AV2129

14:53

Houston George Bush (IAH) C

16:33

Denver (DEN)

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

Mon
-

Tue

Wed
-

Thu

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 1246)

Duration: 2:40, non-stop
Boeing 757-300 (753)

Direct Codeshare Flights:

Avianca AV2129

15:00

Houston George Bush (IAH) C

16:44

Denver (DEN)

Operates only on 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 241)

Duration: 2:44, non-stop
Airbus A321neo (32Q)

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A domestic route departing from the Houston George Bush airport (IAH) and arriving at Denver airport (DEN).
The flight distance is 861 miles, or 1386 km.
The timezone of the departure airport is UTC-6 , 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 2:25 and 2:56.

Return (DEN-IAH) flights

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