Cheap flights from Washington Dulles to Phoenix Sky Harbor from $139
Updated 2026-10-25
1952 miles great-circle distance, typically flown in 4h 20m with 5 airlines operating direct service from Washington Dulles (IAD) 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 Washington Dulles
Washington Dulles International is United Airlines' Mid-Atlantic hub and the larger of the two Washington-region airports. Metro's Silver Line extension opened in 2022, running from the airport's underground station directly to downtown Washington DC in around 50 minutes for $7. International long-haul through IAD is the deepest of any DC-area airport, with United, BA, Virgin Atlantic, Lufthansa, Air France, Qatar, Emirates and Ethiopian all running daily flights to global hubs.
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 IAD to PHX?
| Airline | IATA | Flight time | Cabin |
| United Airlines | UA | 4h 20m | Economy |
| Frontier Airlines | F9 | 4h 20m | Economy |
| American Airlines | AA | 4h 20m | Economy |
| Delta Air Lines | DL | 4h 20m | Economy |
| JetBlue Airways | B6 | 4h 20m | Economy |
5 carriers fly direct on this corridor. Frequencies vary by season — summer and winter holiday peaks see additional flights.
Washington to Phoenix FAQs
Direct flights from Washington Dulles (IAD) to Phoenix Sky Harbor (PHX) take approximately 4h 20m for the 1952-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.
5 carriers operate direct service from Washington Dulles (IAD) to Phoenix Sky Harbor (PHX): United Airlines, Frontier Airlines, American Airlines, Delta Air Lines and JetBlue Airways. 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.