Airlines with flights from Houston to Denver

There are three airlines with scheduled flights between IAH and DEN. Both United and Frontier operates non-stop flights from Houston Airport to Denver International and the flight time is 2 hours and 36 minutes.

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Schedules

United Airlines

Non-stop with United Airlines

  • Total flight time: 2 hours and 36 minutes
  • Houston and Denver are both United Airlines hubs.
  • 82 flights per week
  • Airbus A321neo
    Boeing 757-300 Passenger
    Boeing 737-900 Passenger
    Boeing 737MAX 9 Passenger
  • Business and first class available
IAH
Direct
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
UA1874
05:15
05:15
05:15
05:15
05:15
05:15
05:15
UA2643
06:30
06:30
06:30
06:30
06:30
06:30
06:30
UA1575
07:20
07:20
07:20
07:20
07:20
07:20
07:20
UA2816
08:30
08:30
08:30
08:30
08:30
08:30
08:30
UA1450
09:32
09:32
09:32
09:32
09:32
09:32
09:32
UA1409
10:31
10:31
10:31
10:31
10:31
10:31
10:31
UA2168
12:53
12:33
12:33
12:33
12:33
12:33
12:33
UA2767
15:00
15:00
15:00
15:00
15:00
15:00
15:00
UA484
16:21
16:21
16:21
16:21
16:21
16:21
16:21
UA1654
18:19
18:19
18:19
18:19
18:19
18:19
18:19
UA2339
20:22
20:22
20:22
20:22
20:22
20:22
20:22
UA1066
22:10
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22:10
22:10
22:10
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22:10
SHOW RETURN SCHEDULE
CHECK PRICES FOR IAH - DEN

The timetable & schedule information was updated at 2026-04-21

Frontier Airlines

Non-stop with Frontier Airlines

  • Total flight time: 2 hours and 44 minutes
  • Low-cost airline
  • Denver is a Frontier Airlines focus city (Operating base).
  • 18 flights per week
  • Airbus A320neo
    Airbus A320
    Airbus A321neo
    Airbus A321
IAH
Direct
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
F93229
06:30
06:30
06:30
06:30
06:30
06:30
06:30
F93227
18:14
18:14
18:14
18:14
18:14
18:14
18:14
F93205
22:09
----
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22:09
22:09
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22:09
SHOW RETURN SCHEDULE
CHECK PRICES FOR IAH - DEN

The timetable & schedule information was updated at 2026-04-21

United Airlines

Via Dallas with United Airlines

  • Total flight time: 3h 59m - 6h 33m.
  • Houston and Denver are both United Airlines hubs.
  • 127 flights per week
  • Airbus A321neo
    Boeing 757-300 Passenger
    Boeing 737-900 Passenger
    Boeing 737MAX 9 Passenger
IAH
 
Via DFW
 
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
UA358
UA2049
07:23
07:23
07:23
07:23
07:23
07:23
07:23
UA2074
UA2049
09:31
09:31
09:31
09:31
09:31
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09:31
UA1388
UA1303
14:42
14:42
14:42
14:42
14:42
14:42
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UA4013
UA1303
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----
----
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14:42
UA1439
UA1602
16:20
16:20
16:20
16:20
16:20
----
16:20
SHOW RETURN SCHEDULE
CHECK PRICES FOR IAH - DEN

The timetable & schedule information was updated at 2026-04-21

American Airlines

Via Dallas with American Airlines

  • Total flight time: 4h 08m - 6h 38m.
  • One World Alliance
  • 236 flights per week
IAH
 
Via DFW
 
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
AA2551
AA1523
05:00
05:00
05:00
05:00
05:00
05:00
05:00
AA700
AA1756
06:02
06:02
06:00
06:00
06:00
06:00
06:00
AA3026
AA2359
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----
07:00
07:00
07:00
07:00
07:00
AA3002
AA2359
07:00
07:00
----
----
----
----
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AA5017
AA420
----
----
09:03
09:03
09:03
09:03
09:03
AA3193
AA420
09:26
09:26
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----
----
----
----
AA1407
AA420
----
----
10:26
10:26
10:26
10:26
10:26
AA1916
AA420
10:39
10:39
----
----
----
----
----
AA3591
AA1832
11:24
11:24
----
----
----
----
----
AA3477
AA1832
----
----
11:28
11:28
11:28
11:28
11:28
AA3584
AA1322
----
14:04
----
----
----
----
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AA2512
AA1322
14:04
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----
----
----
----
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AA1397
AA1322
----
----
14:09
14:09
14:09
14:09
14:09
AA1393
AA2235
----
----
16:14
16:14
16:14
16:14
16:14
AA3583
AA2235
16:18
16:18
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----
----
----
----
AA1929
AA662
18:50
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----
----
----
----
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AA2438
AA1927
----
----
----
18:53
----
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18:53
AA4923
AA662
19:46
----
----
----
----
----
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AA1386
AA1927
----
----
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19:51
----
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19:51
SHOW RETURN SCHEDULE
CHECK PRICES FOR IAH - DEN

The timetable & schedule information was updated at 2026-04-21

United Airlines

Via Oklahoma City with United Airlines

  • Total flight time: 4h 08m - 4h 57m.
  • Houston and Denver are both United Airlines hubs.
  • 8 flights per week
  • Airbus A321neo
    Boeing 757-300 Passenger
    Boeing 737-900 Passenger
    Boeing 737MAX 9 Passenger
IAH
 
Via OKC
 
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
UA6189
UA400
----
14:35
14:35
----
----
----
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UA4850
UA400
----
----
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14:35
----
SHOW RETURN SCHEDULE
CHECK PRICES FOR IAH - DEN

The timetable & schedule information was updated at 2026-04-21

United Airlines

Via Austin with United Airlines

  • Total flight time: 4h 10m - 6h 40m.
  • Houston and Denver are both United Airlines hubs.
  • 110 flights per week
  • Airbus A321neo
    Boeing 757-300 Passenger
    Boeing 737-900 Passenger
    Boeing 737MAX 9 Passenger
IAH
 
Via AUS
 
DEN
 
Flight
Mon
Aug 3
Tue
Aug 4
Wed
Aug 5
Thu
Aug 6
Fri
Aug 7
Sat
Aug 8
Sun
Aug 9
UA2016
UA779
07:35
07:35
07:35
07:35
07:35
07:35
07:30
UA1823
UA1541
10:15
10:15
10:15
10:15
10:15
----
10:15
UA1859
UA2447
12:05
12:05
12:05
12:05
12:05
12:17
12:05
UA6118
UA439
14:20
14:20
14:20
14:20
14:20
----
14:20
UA1711
UA439
16:20
16:20
16:20
16:20
16:20
----
16:20
SHOW RETURN SCHEDULE
CHECK PRICES FOR IAH - DEN

The timetable & schedule information was updated at 2026-04-21

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Flight data on this page was last updated on 2026-07-13
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