£116 Cheap Flights from Phoenix (PHX) to Washington (IAD)

View £116 flight on Wed, 5 Nov 2025Opens in a new window

Popular airlines from Sky Harbor International Airport (PHX) to Washington Dulles International Airport (IAD)

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Cheap Flights from Phoenix (PHX) to Washington (IAD)

Prices were available within the past 7 days and start at £116 for one-way flights and £251 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, 17 Sep - Wed, 24 Sep
PHX
Phoenix
IAD
Washington
£251 Return, found 3 days ago
£251
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 17 Sep from Phoenix to Washington, returning Wed, 24 Sep, priced at £251 found 3 days ago
Alaska Airlines
Tue, 16 Sep - Tue, 23 Sep
PHX
Phoenix
IAD
Washington
£253 Return, found 2 days ago
£253
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 16 Sep from Phoenix to Washington, returning Tue, 23 Sep, priced at £253 found 2 days ago
Alaska Airlines
Thu, 11 Sep - Thu, 18 Sep
PHX
Phoenix
IAD
Washington
£267 Return, found 3 days ago
£267
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 11 Sep from Phoenix to Washington, returning Thu, 18 Sep, priced at £267 found 3 days ago
Alaska Airlines
Tue, 16 Sep - Tue, 23 Sep
PHX
Phoenix
IAD
Washington
£272 Return, found 2 days ago
£272
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 16 Sep from Phoenix to Washington, returning Tue, 23 Sep, priced at £272 found 2 days ago
Alaska Airlines
Tue, 16 Sep - Tue, 23 Sep
PHX
Phoenix
IAD
Washington
£273 Return, found 2 days ago
£273
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 16 Sep from Phoenix to Washington, returning Tue, 23 Sep, priced at £273 found 2 days ago
Alaska Airlines
Tue, 16 Sep - Tue, 23 Sep
PHX
Phoenix
IAD
Washington
£294 Return, found 2 days ago
£294
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 16 Sep from Phoenix to Washington, returning Tue, 23 Sep, priced at £294 found 2 days ago
Alaska Airlines
Mon, 15 Sep - Mon, 22 Sep
PHX
Phoenix
IAD
Washington
£303 Return, found 3 days ago
£303
Return
found 3 days ago
Select Alaska Airlines flight, departing Mon, 15 Sep from Phoenix to Washington, returning Mon, 22 Sep, priced at £303 found 3 days ago
Alaska Airlines
Mon, 15 Sep - Mon, 22 Sep
PHX
Phoenix
IAD
Washington
£308 Return, found 3 days ago
£308
Return
found 3 days ago
Select Alaska Airlines flight, departing Mon, 15 Sep from Phoenix to Washington, returning Mon, 22 Sep, priced at £308 found 3 days ago
Alaska Airlines
Fri, 12 Sep - Fri, 19 Sep
PHX
Phoenix
IAD
Washington
£315 Return, found 3 days ago
£315
Return
found 3 days ago
Select Alaska Airlines flight, departing Fri, 12 Sep from Phoenix to Washington, returning Fri, 19 Sep, priced at £315 found 3 days ago
Alaska Airlines
Fri, 12 Sep - Fri, 19 Sep
PHX
Phoenix
IAD
Washington
£318 Return, found 3 days ago
£318
Return
found 3 days ago
Select Alaska Airlines flight, departing Fri, 12 Sep from Phoenix to Washington, returning Fri, 19 Sep, priced at £318 found 3 days ago

Find the cheapest month to fly from Phoenix (PHX) to Washington (IAD)

May is typically the cheapest month to fly

From £105 - £228 per traveller.

Graph displaying average flight prices per month

Flight from Phoenix to Washington route information
Origin airport
Sky Harbor Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines
Return price
£250
Distance
3123 km
Average flight time
7 hours 21 mins

Compare flights from Phoenix to Washington easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Phoenix to Washington. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Washington Dulles Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Sky Harbor Intl. to Washington Dulles Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Sky Harbor Intl. (PHX) to Washington Dulles Intl. (IAD)

The easiest way to view the best deals on flights from Phoenix to Washington today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Sky Harbor Intl. to Washington Dulles Intl. start at just £251 and range up to £318.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Phoenix and Washington
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Phoenix to Washington flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Sky Harbor Intl. to Washington Dulles Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from PHX to Washington Dulles Intl. Airport (IAD)?
If you're travelling between Phoenix Sky Harbour Intl. Airport and IAD, round-trip journeys start from £251. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year, so don't hang around. Book today and save yourself both money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from PHX to Dulles Intl. Airport?
Most flights can be cancelled online, but every airline has different terms and conditions. If you do need to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from Phoenix Sky Harbour Airport to Dulles Intl. Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Phoenix Sky Harbour Airport to IAD flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Phoenix Sky Harbour Intl. Airport to Washington Dulles Intl. Airport (IAD)?
Around 3,100 kilometres separates Phoenix and Chantilly, so pack something to keep you occupied for a couple of hours. That thrilling novel you're eager to read will be perfect.
Which airlines fly direct from Sky Harbour Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
Operating 30 flights monthly, United Airlines (UA) is a great choice when flying directly from Sky Harbour Intl. Airport (PHX) to IAD.
Are Phoenix Sky Harbour Intl. Airport to Dulles Intl. Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to get an awesome last-minute deal from PHX to Dulles Intl. Airport, but there's no guarantee. As many airlines publish prices up to a year in advance, it's worthwhile keeping an eye on fares early and being ready to pounce when you see a bargain. Expedia compares air carrier prices and updates flight deals regularly, so you can rest easy knowing you're always getting the latest offers.

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