Cheap flights from Denver International to Phoenix Sky Harbor from $119
Updated 2026-07-26
601 miles great-circle distance, typically flown in 1h 37m with 6 airlines operating direct service from Denver International (DEN) to Phoenix Sky Harbor (PHX). 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 Denver International
Denver International sits 25 miles northeast of downtown Denver — a deliberately remote site that allows for six runways and almost unlimited expansion. The A Line commuter train runs every 15 minutes from the airport directly to Union Station downtown in 37 minutes for $10.50. United dominates the schedule with its largest non-Newark hub; Southwest and Frontier add heavy domestic capacity. Snow disruption is common between November and March, but the airport's ground-stop policy is faster than ORD's.
Arriving in Phoenix
Phoenix Sky Harbor is 4 miles east of downtown Phoenix — one of the most central airports in the US after BOS and DCA. Valley Metro Rail does not enter the airport; the PHX Sky Train light rail connects to METRO at 44th Street/Washington in 5 minutes for $4 then onward to downtown. Spring training (February–March) is peak season; June–August summer heat (110°F+) drives fares to their lowest.
Who flies DEN to PHX?
| Airline | IATA | Flight time | Cabin |
| United Airlines | UA | 1h 37m | Economy |
| Southwest Airlines | WN | 1h 37m | Economy |
| Frontier Airlines | F9 | 1h 37m | Economy |
| Spirit Airlines | NK | 1h 37m | Economy |
| American Airlines | AA | 1h 37m | Economy |
| Delta Air Lines | DL | 1h 37m | Economy |
6 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Denver to Phoenix FAQs
Direct flights from Denver International (DEN) to Phoenix Sky Harbor (PHX) take approximately 1h 37m for the 601-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.
6 carriers operate direct service from Denver International (DEN) to Phoenix Sky Harbor (PHX): United Airlines, Southwest Airlines, Frontier Airlines, Spirit Airlines, American Airlines and 1 more. 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.
Phoenix Sky Harbor (PHX) is the primary international airport for Phoenix. 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.