Cheap Flights from Houston to Denver
Compare cheap flights from Houston (IAH) to Denver (DEN) on Tripile, with fares from around $89. The route takes about 2h 40m, and January is often the best month for low prices.
Airlines on This Route
Popular airlines flying Houston to Denver include United, Southwest, Frontier, Spirit. Compare their schedules, baggage rules, and prices side by side, then book the option that fits your trip.
With 4 carriers commonly serving IAH to DEN, departure times are spread across the day, so it is worth checking early-morning and late-evening flights when you want the lowest fare on a 2h 40m sector.
When to Book IAH to DEN
Fares on this route start from around $89, and January typically brings the lowest prices. Search with flexible dates to compare a whole month at once, check the return leg from Denver to Houston in the same search, and review the fare rules before paying so you know what a change or cancellation would cost.