Frontier Airlines
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United States
George Bush Intercontinental Airport
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United States
Denver International Airport
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Scan through all non-stop flights from Houston to Denver. The full flight schedule below gives an overview of all non-stop flights from IAH to DEN, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
The Mediterranean regions near Denver are known for their warm, arid summers, where temperatures often go beyond 30°C (86°F). In some inland spots, the heat can climb even higher, sometimes reaching 40°C (104°F) or more. The winters are pleasantly mild, accompanied by some rainfall. This lovely climate, paired with breathtaking landscapes and bright, sunny days attract visitors from around the globe.
Denver is a wonderful place to visit all year long, but spring (March-May) and fall (September-November) are the best seasons to visit. The weather is pleasantly warm during these times, especially since the summers can be quite hot in those regions.

In total there are 2 airlines operating nonstop flights from Houston IAH to Denver DEN. This section gives an overview of the flight schedules and timetables of every airline with direct flights for this route.
Click an airline below to view their IAH DEN flight schedule.
Flights from IAH to DEN are operated 7 times a week, with an average of 1 flight per day. Departure times vary between 05:05 - 22:56. The earliest flight departs at 05:05, the last flight departs at 22:56. However, this depends on the date you are flying so please check with the full flight schedule above to see which departure times are available on your preferred date(s) of travel.
You can fly in Economy and Business Class. Premium Economy and First Class are not available on this route (at least not as a non-stop flight).
The fastest direct flight from Houston to Denver takes 2 hours and 49 minutes. The flight distance between Houston and Denver is 861 miles (or 1,386 km).
There are 2 airports in Denver: Denver International Airport (DEN) and Centennial Airport (APA).
There are 7 flights per week flying from Houston to Denver (as of March 2026).
2 hours and 49 minutes is the average flight time from Houston to Denver.
The distance from Houston to Denver is 861 miles (1,386 kilometers).
Frontier Airlines and United Airlines are flying nonstop from Houston to Denver.
Star Alliance is currently the only alliance flying nonstop from Houston to Denver.
You can fly non-stop in Economy and Business Class.
Aircraft types that fly from Houston to Denver:
The earliest flight departs at 05:05 from Houston and arrives at 06:33 at Denver.
The latest flight departs at 22:56 from Houston and arrives at 00:38 at Denver.
861 miles (1,386 km) · 2h 49m
06:45
08:26
Frontier Airlines
F9 3229
Frontier Airlines
Airbus A321neo
Y
W
J
F
07:00
08:38
United Airlines
Star Alliance
UA 2643
United Airlines
Airbus A321neo
Y
W
J
F
08:13
09:55
United Airlines
Star Alliance
UA 1544
United Airlines
Boeing 737 MAX 9
Y
W
J
F
09:57
11:43
United Airlines
Star Alliance
UA 1450
United Airlines
Airbus A321neo
Y
W
J
F
10:32
12:18
United Airlines
Star Alliance
UA 1409
United Airlines
Boeing 737-900
Y
W
J
F
12:48
14:33
United Airlines
Star Alliance
UA 2168
United Airlines
Boeing 777
Y
W
J
F
14:41
16:27
United Airlines
Star Alliance
UA 1246
United Airlines
Airbus A321neo
Y
W
J
F
16:32
18:21
United Airlines
Star Alliance
UA 470
United Airlines
Airbus A321neo
Y
W
J
F
16:32
18:21
United Airlines
Star Alliance
UA 470
United Airlines
Airbus A321neo
Y
W
J
F
18:20
20:13
United Airlines
Star Alliance
UA 1654
United Airlines
Boeing 757-300
Y
W
J
F
20:30
22:15
United Airlines
Star Alliance
UA 2339
United Airlines
Airbus A321neo
Y
W
J
F
22:15
23:57
United Airlines
Star Alliance
UA 1066
United Airlines
Boeing 737-900
Y
W
J
F
22:56
00:38
Frontier Airlines
F9 4855
Frontier Airlines
Airbus A321-100/200
Y
W
J
F
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