Cheap flight tickets from Washington Dulles to Phoenix Sky Harbor

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Flight deals from Washington Dulles Airport to Phoenix Sky Harbor Airport

Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to Phoenix Sky Harbor Airport? If you want to travel next month, return fares start from RM825. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Washington Dulles to Phoenix Sky Harbor

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Phoenix Sky Harbor flights are currently cheapest in April.

Direct flights from Washington Dulles to Phoenix Sky Harbor

Washington Dulles to Phoenix Sky Harbor: Alternative routes

Compare routes from Washington Dulles to Phoenix below. You may find an airport to fly into that's cheaper, faster, or easier than Phoenix Sky Harbor.

Washington D.C. to Phoenix: Flight information

The things to know before you go.
Cheapest flight foundRM825
Cheapest month to flyApril
Average flight time5 hrs, 6 mins
Most popular airlineUnited
Average flights per week52

Finding cheap flights from Washington Dulles to Phoenix Sky Harbor: Frequently asked questions

The best price we found for a return flight from Washington Dulles to Phoenix Sky Harbor is RM825. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 6 minutes is the average flight time from Washington Dulles to Phoenix Sky Harbor.
United, Southwest Airlines and Lufthansa fly direct from Washington Dulles to Phoenix Sky Harbor.
As of March 2026, there are 52 flights per week flying from Washington Dulles to Phoenix Sky Harbor.
The cheapest month to fly from Washington Dulles to Phoenix Sky Harbor is usually April.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Phoenix Sky Harbor Airport on Tuesday, 14 April 2026.
Yes – the average flight time is 5 hours and 6 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Phoenix Sky Harbor but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
Currently, Frontier Airlines and United offer the cheapest flight tickets to Phoenix Sky Harbor.

Flying from Washington Dulles International Airport (IAD) to Phoenix Sky Harbour International Airport (PHX): what you need to know

  • Around 4 hours 50 minutes is how long you can expect to be in the air on a direct flight from Washington Dulles International Airport to Phoenix Sky Harbour International Airport.

  • Phoenix's timezone is UTC-7, which makes Phoenix three hours behind Washington DC.

  • Choose from 52 weekly Washington Dulles International Airport to Phoenix Sky Harbour International Airport flights. The 08:15 departure with United Airlines is the earliest available. Southwest Airlines operates the last service of the day at 19:40.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules to live by. Show up at the airport on time to catch your IAD to PHX flight.

  • Flying during a peak month like April? Public holidays and other popular seasons can result in longer lines and delays at airport checkpoints. Play things extra safe and arrive up to four hours before international flights and two hours before domestic departures.

  • United Airlines is your gateway to discovering Phoenix (and perhaps some other great parts of United States!). Browse the direct flights from Washington Dulles International Airport to Phoenix Sky Harbour International Airport offered by this popular airline.

  • The airline that passengers book most often on this route is United Airlines.

  • United Airlines stands out as the most punctual carrier for IAD to PHX flights, with 87.35% of its services arriving as scheduled.

  • We make it easy to book a flight with a stopover. To see all your options for tickets from Washington Dulles International Airport to Phoenix Sky Harbour International Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Worthwhile stopovers between IAD and PHX include:

    • Kansas City International Airport

    • Nashville International Airport

    • Detroit Metropolitan Wayne County Airport

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Phoenix Sky Harbour International Airport (PHX)

  • RM412 is currently the lowest price for a one-way Washington Dulles International Airport to Phoenix Sky Harbour International Airport flight. Return flights start from RM825. These fares can change depending on availability and demand.

  • To get cheap tickets from IAD to PHX, reserve your trip six months ahead of your departure date.

  • The cheapest month for flights from Washington Dulles International Airport to Phoenix Sky Harbour International Airport is May. Use the 'Whole month' tool to find the lowest prices if you have flexible travel dates.

  • Never miss a deal on cheap flights from IAD to PHX by creating a Price Alert. We'll send you an email or notification on the app when fares go down.

  • Tailor your flights with filters. Choose your ideal arrival and departure times, total journey duration and airlines. You can also sort results by 'Cheapest,' 'Fastest' or 'Best' flights from Washington Dulles International Airport to Phoenix Sky Harbour International Airport.

Handy information about Washington Dulles International Airport (IAD)

  • IAD is located at 1 Saarinen Circle.

  • Of the flights that depart from Washington Dulles International Airport, 74.39% arrive on time at their destination.

  • Washington Dulles International Airport is about 56 kilometres from central Washington DC. If you're catching a cab, ride-sharing or driving from the centre, it'll take 50 minutes or so to arrive, depending on the traffic.

  • Planning to take public transport? Expect a journey time of around 3 hours 25 minutes.

  • Searching for a handy hotel close to IAD? If you've booked an early flight from Washington Dulles International Airport to Phoenix Sky Harbour International Airport, these accommodation options will have you sleeping moments from your departure lounge:

Arriving at Phoenix Sky Harbour International Airport (PHX)

Getting from Phoenix Sky Harbour International Airport (PHX) to central Phoenix

  • You'll find PHX at 3400 Sky Harbour Boulevard.

  • Phoenix Sky Harbour International Airport to central Phoenix has a drive time of about 10 minutes. It's approximately 8 kilometres away.

  • Travelling to the centre by public transport takes roughly 35 minutes.

When to fly to Phoenix Sky Harbour International Airport (PHX)

  • The quietest month for a flight from Washington Dulles International Airport to Phoenix Sky Harbour International Airport is May, while July is the busiest. Choose the best time to go to Phoenix based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • When reserving your flight from Washington Dulles International Airport to Phoenix Sky Harbour International Airport, think about the type of weather you like. July is the warmest month in Phoenix, with temperatures ranging from 26ºC (79ºF) to 44ºC (111ºF).

  • If you want to travel in cooler conditions, look for a cheap ticket from IAD to PHX in January. Average temperatures are between 4ºC (39ºF) and 20ºC (68ºF) then.

Explore more of United States

  • You've seen Phoenix, now it's time to explore more of United States. Journey around 483 kilometres west to San Diego to check off its top sights. From San Diego Zoo to USS Midway Museum and SeaWorld San Diego, there's plenty to keep you busy.

  • Around 418 kilometres north-west of Phoenix, Las Vegas is another favourite stop in United States. Start your sightseeing at Las Vegas Strip, Fountains of Bellagio and Fremont Street Experience.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.