Cheap Flights from Phoenix to Denver
Compare cheap flights from Phoenix (PHX) to Denver (DEN) on Tripile, with fares from around $79. The route takes about 2h 00m, and March is often the best month for low prices.
Airlines on This Route
Popular airlines flying Phoenix to Denver include Southwest, Frontier, American Airlines, United. Compare their schedules, baggage rules, and prices side by side, then book the option that fits your trip.
With 4 carriers commonly serving PHX 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 00m sector.
When to Book PHX to DEN
Fares on this route start from around $79, and March typically brings the lowest prices. Search with flexible dates to compare a whole month at once, check the return leg from Denver to Phoenix in the same search, and review the fare rules before paying so you know what a change or cancellation would cost.