Houston (IAH) to Denver (DEN) flights
2 airlines fly nonstop from Houston (IAH) to Denver (DEN): Frontier Airlines and United Airlines. The two airports are 862 miles (1,387 km) apart. United Airlines is in Star Alliance. There are also 42 ways to fly it with one stop, through Dallas, Amarillo and Colorado Springs and more.
Airlines flying nonstop from IAH to DEN
- Frontier AirlinesNot in an allianceWho books it
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAH to DEN with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
IAH to DEN with one stop
42 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Dallas (DFW)American Airlines and United Airlines the whole way
- Via Amarillo (AMA)United Airlines the whole way
- Via Colorado Springs (COS)United Airlines the whole way
- Via Oklahoma City (OKC)United Airlines the whole way
- Via Abilene (ABI)United Airlines the whole way
- Via Lubbock (LBB)United Airlines the whole way
- Via Austin (AUS)United Airlines the whole way+1
- Via Wichita (ICT)United Airlines the whole way
- Via Tulsa (TUL)United Airlines the whole way
- Via Shreveport (SHV)United Airlines the whole way
- Via San Antonio (SAT)United Airlines the whole way
- Via Midland (MAF)United Airlines the whole way
- Via Hobbs (HOB)United Airlines the whole way
- Via Salina (SLN)United Airlines the whole way
- Via Aspen (ASE)United Airlines the whole way
IAH to DEN: common questions
Which airlines fly nonstop from IAH to DEN?
Frontier Airlines and United Airlines (Star Alliance) fly nonstop from Houston (IAH) to Denver (DEN).
How far is Houston from Denver by plane?
Houston (IAH) and Denver (DEN) are 862 miles (1,387 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book IAH to DEN award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, JetBlue TrueBlue, Lufthansa Miles & More and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does IAH to DEN cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for IAH to DEN with taxes and fees.
Where can I connect between Houston and Denver?
The most direct connections are through Dallas (DFW), Amarillo (AMA), Colorado Springs (COS), Oklahoma City (OKC) and Abilene (ABI). On 41 of them the same airline flies both flights, for example American Airlines through Dallas.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.