Cheap flights from George Bush Intercontinental to Denver International from $119
Updated 2026-08-10
862 miles great-circle distance, typically flown in 2h 08m with 5 airlines operating direct service from George Bush Intercontinental (IAH) to Denver International (DEN). Fares on this corridor stay relatively stable across the year — booking 4–8 weeks ahead and choosing a midweek departure typically secures the best price.
Flying from George Bush Intercontinental
Houston George Bush Intercontinental is United Airlines' second-largest hub after Newark, with five terminals and a Skytrain people mover connecting them. METRO's bus 102 runs from the airport to downtown Houston in around 50 minutes; light rail does not extend to IAH. International long-haul through Houston is heaviest to Latin America (over 30 destinations) and Europe, with Lufthansa, KLM, Air France and British Airways all operating daily and growing Middle East service via Qatar, Emirates and Turkish.
Arriving in Denver
Denver International is 25 miles northeast of downtown Denver — the most remote big-city airport in the US, deliberately sited to allow for unlimited expansion. The University of Colorado A Line commuter train runs from a dedicated station every 15 minutes to Union Station in 37 minutes for $10.50. Snow can disrupt operations from November through April; Denver fares are cheapest in shoulder seasons (April–May, September–October).
Who flies IAH to DEN?
| Airline | IATA | Flight time | Cabin |
| United Airlines | UA | 2h 08m | Economy |
| American Airlines | AA | 2h 08m | Economy |
| Spirit Airlines | NK | 2h 08m | Economy |
| Frontier Airlines | F9 | 2h 08m | Economy |
| Delta Air Lines | DL | 2h 08m | Economy |
5 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Houston to Denver FAQs
Direct flights from George Bush Intercontinental (IAH) to Denver International (DEN) take approximately 2h 08m for the 862-mile journey, plus 30–60 minutes of taxi, climb and descent. Total airport-to-airport time depends on cruise winds and air-traffic queueing on approach.
5 carriers operate direct service from George Bush Intercontinental (IAH) to Denver International (DEN): United Airlines, American Airlines, Spirit Airlines, Frontier Airlines and Delta Air Lines. Frequencies vary by season and carrier — United Airlines typically operates the highest weekly count on this corridor.
No — United States is domestic travel for US citizens. A US passport is not required for the 50 states, DC or US territories (Puerto Rico, US Virgin Islands, Guam, American Samoa, Northern Mariana Islands), though Real ID-compliant ID is required at TSA from May 2025.
Denver International (DEN) is the primary international airport for Denver. Allow 30–60 minutes for the ground transfer by train, express bus, taxi or rideshare depending on traffic and time of day. See the airport's official website for current train and shuttle timetables.