Phoenix Sky Harbor to Denver International
601 miles great-circle distance, typically flown in 1h 37m with 8 airlines operating direct service from Phoenix Sky Harbor (PHX) to Denver International (DEN). Cheapest fares are usually in January (around $119 return), with peak prices in August (around $357). Departures on a Tuesday tend to undercut weekend prices on this corridor.
Flying from Phoenix Sky Harbor
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 PHX to DEN?
| Airline | IATA | Flight time | Cabin |
| American Airlines | AA | 1h 37m | Economy |
| Southwest Airlines | WN | 1h 37m | Economy |
| Delta Air Lines | DL | 1h 37m | Economy |
| United Airlines | UA | 1h 37m | Economy |
| Alaska Airlines | AS | 1h 37m | Economy |
| JetBlue Airways | B6 | 1h 37m | Economy |
| Spirit Airlines | NK | 1h 37m | Economy |
| Frontier Airlines | F9 | 1h 37m | Economy |
8 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Best time to fly PHX→DEN
Synthesised from 12-month price aggregates. Cheapest months in green, peak in red.
Estimated baseline. Prices update on a 30-day cadence as Travelpayouts data refreshes. Cheapest day-of-week typically Tuesday.
Phoenix to Denver FAQs
Direct flights from Phoenix Sky Harbor (PHX) to Denver International (DEN) 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.
January is typically the cheapest month on this route, with one-way fares from $119. August is the peak — expect prices 2–3× higher. Book 4–8 weeks ahead for best fares; last-minute prices on this corridor rise sharply inside two weeks of departure.
8 carriers operate direct service from Phoenix Sky Harbor (PHX) to Denver International (DEN): American Airlines, Southwest Airlines, Delta Air Lines, United Airlines, Alaska Airlines and 3 more. Frequencies vary by season and carrier — American 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.