Houston (IAH) to Denver (DEN) flights: who flies it

Houston to Denver flight schedule

Scheduled nonstop departures for IAH to DEN starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Scheduled nonstop departures from Houston (IAH) to Denver (DEN)
Date	Flight	Airline	Departs IAH	Arrives DEN	Duration	Aircraft
Thu, Oct 22	UA 1874	United Airlines	05:15	06:47	2h 32m	Airbus A321neo family
Thu, Oct 22	UA 2415	United Airlines	06:20	07:52	2h 32m	Airbus A321neo family
Thu, Oct 22	F9 3229	Frontier Airlines	06:24	08:05	2h 41m	Airbus A321
Thu, Oct 22	UA 1575	United Airlines	07:20	08:55	2h 35m	Airbus A321neo family
Thu, Oct 22	UA 1686	United Airlines	08:30	10:07	2h 37m	Airbus A321neo family
Thu, Oct 22	UA 1450	United Airlines	09:35	11:12	2h 37m	Airbus A321neo family
Thu, Oct 22	F9 3227	Frontier Airlines	10:31	12:12	2h 41m	Airbus A320neo
Thu, Oct 22	UA 2787	United Airlines	10:32	12:09	2h 37m	Airbus A321neo family
Thu, Oct 22	UA 2168	United Airlines	12:34	14:14	2h 40m	Boeing 757-300
Thu, Oct 22	UA 2767	United Airlines	15:00	16:45	2h 45m	Airbus A321neo family
Thu, Oct 22	UA 470	United Airlines	16:30	18:21	2h 51m	Airbus A321neo family
Thu, Oct 22	UA 1654	United Airlines	18:17	20:08	2h 51m	Boeing 757-300
Thu, Oct 22	UA 685	United Airlines	20:24	22:15	2h 51m	Airbus A321neo family
Thu, Oct 22	F9 3205	Frontier Airlines	22:40	00:18	2h 38m	Airbus A320neo
Fri, Oct 23	UA 1874	United Airlines	05:15	06:47	2h 32m	Airbus A321neo family
Fri, Oct 23	UA 2415	United Airlines	06:20	07:52	2h 32m	Airbus A321neo family
Fri, Oct 23	F9 3229	Frontier Airlines	06:24	08:05	2h 41m	Airbus A321
Fri, Oct 23	UA 1575	United Airlines	07:20	08:55	2h 35m	Airbus A321neo family
Fri, Oct 23	UA 1686	United Airlines	08:30	10:07	2h 37m	Airbus A321neo family
Fri, Oct 23	UA 1450	United Airlines	09:35	11:12	2h 37m	Airbus A321neo family
Fri, Oct 23	F9 3227	Frontier Airlines	10:31	12:12	2h 41m	Airbus A320neo
Fri, Oct 23	UA 2787	United Airlines	10:32	12:09	2h 37m	Airbus A321neo family
Fri, Oct 23	UA 2168	United Airlines	12:34	14:14	2h 40m	Boeing 757-300
Fri, Oct 23	UA 2767	United Airlines	15:00	16:45	2h 45m	Airbus A321neo family
Fri, Oct 23	UA 470	United Airlines	16:30	18:21	2h 51m	Airbus A321neo family
Fri, Oct 23	UA 1654	United Airlines	18:17	20:08	2h 51m	Boeing 757-300
Fri, Oct 23	UA 685	United Airlines	20:24	22:08	2h 44m	Boeing 737-900
Fri, Oct 23	F9 3205	Frontier Airlines	22:40	00:18	2h 38m	Airbus A320neo
Sat, Oct 24	UA 1874	United Airlines	05:15	06:47	2h 32m	Airbus A321neo family
Sat, Oct 24	UA 2415	United Airlines	06:20	07:52	2h 32m	Airbus A321neo family
Sat, Oct 24	F9 3229	Frontier Airlines	06:24	08:05	2h 41m	Airbus A321neo family
Sat, Oct 24	UA 1575	United Airlines	07:20	08:55	2h 35m	Airbus A321neo family
Sat, Oct 24	UA 1686	United Airlines	08:30	10:07	2h 37m	Airbus A321neo family
Sat, Oct 24	UA 1450	United Airlines	09:35	11:12	2h 37m	Airbus A321neo family
Sat, Oct 24	F9 3227	Frontier Airlines	10:31	12:12	2h 41m	Airbus A321neo family
Sat, Oct 24	UA 2787	United Airlines	10:32	12:09	2h 37m	Airbus A321neo family
Sat, Oct 24	UA 2168	United Airlines	12:34	14:14	2h 40m	Boeing 757-300
Sat, Oct 24	UA 2767	United Airlines	15:00	16:45	2h 45m	Airbus A321neo family
Sat, Oct 24	UA 470	United Airlines	16:30	18:21	2h 51m	Airbus A321neo family
Sat, Oct 24	UA 1654	United Airlines	18:17	20:08	2h 51m	Boeing 757-300

Showing the first 40 of 108 scheduled IAH to DEN departures across 7 days with service, starting October 22, 2026. Every remaining date is on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every IAH to DEN date on the interactive map

Aircraft on the Houston to Denver nonstop

In the schedule table on this page, United Airlines flies the Airbus A321neo family, the Boeing 757-300, and the Boeing 737-900, and Frontier Airlines flies the Airbus A320neo, the Airbus A321, and the Airbus A321neo family. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

The full IAH to DEN nonstop schedule

This page carries the full IAH to DEN nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each IAH to DEN nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

See IAH to DEN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Houston to Denver nonstop

Carriers operating IAH to DEN nonstop in the current schedule.

See IAH to DEN on the interactive map →

Frequently asked questions about IAH to DEN

How long is the flight from Houston (IAH) to Denver (DEN)?

Scheduled flight times from Houston (IAH) to Denver (DEN) run from 2h 32m to 2h 51m across the departures in the schedule table on this page. The nonstop covers about 863 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.

Which airlines fly nonstop from IAH to DEN?

United Airlines and Frontier Airlines fly IAH to DEN nonstop. 2LNR doesn't show award or upgrade space for any of them on IAH to DEN, so this page carries the schedule rather than a space claim.

How many flights a week are there from IAH to DEN?

About 115 nonstop flights a week run between Houston (IAH) and Denver (DEN) in the current schedule, operated by United Airlines and Frontier Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.

What time do flights from IAH to DEN depart?

Scheduled IAH to DEN nonstops in the next 7 days with service leave between 05:15 and 22:40, local time at Houston. The schedule table on this page lists every departure by date, with its arrival time and aircraft.

Which flights operate IAH to DEN nonstop?

The schedule table on this page lists 14 flight numbers for IAH to DEN nonstops, including UA 1450, UA 1575, UA 1686, UA 1874, UA 2415, and UA 2787 on United Airlines, and F9 3227 and F9 3229 on Frontier Airlines. The table lists each departure by date with its times and aircraft.

Does 2LNR show upgrade or award space on IAH to DEN?

Not on this route: 2LNR doesn't show award or upgrade space for any airline flying IAH to DEN. The page carries the full IAH to DEN nonstop schedule and who flies each departure, and the reverse direction is linked below.