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£125 Cheap Flights from Washington (IAD) to Phoenix (PHX)

View £125 flight on Wed, 21 Oct 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £125 for one-way flights and £249 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 14 Nov - Mon, 16 Nov
IAD
Washington
PHX
Phoenix
£249 Return, found 3 hours ago
£249
Return
found 3 hours ago
Select Delta flight, departing Sat, 14 Nov from Washington to Phoenix, returning Mon, 16 Nov, priced at £249 found 3 hours ago
Alaska Airlines
Sat, 31 Oct - Tue, 17 Nov
IAD
Washington
PHX
Phoenix
£250 Return, found 1 day ago
£250
Return
found 1 day ago
Select Alaska Airlines flight, departing Sat, 31 Oct from Washington to Phoenix, returning Tue, 17 Nov, priced at £250 found 1 day ago
Delta
Sat, 7 Nov - Thu, 19 Nov
IAD
Washington
PHX
Phoenix
£263 Return, found 4 hours ago
£263
Return
found 4 hours ago
Select Delta flight, departing Sat, 7 Nov from Washington to Phoenix, returning Thu, 19 Nov, priced at £263 found 4 hours ago
Alaska Airlines
Sun, 6 Dec - Fri, 25 Dec
IAD
Washington
PHX
Phoenix
£273 Return, found 4 hours ago
£273
Return
found 4 hours ago
Select Alaska Airlines flight, departing Sun, 6 Dec from Washington to Phoenix, returning Fri, 25 Dec, priced at £273 found 4 hours ago
Delta
Fri, 18 Dec - Wed, 30 Dec
IAD
Washington
PHX
Phoenix
£278 Return, found 4 hours ago
£278
Return
found 4 hours ago
Select Delta flight, departing Fri, 18 Dec from Washington to Phoenix, returning Wed, 30 Dec, priced at £278 found 4 hours ago
Delta
Fri, 13 Nov - Mon, 16 Nov
IAD
Washington
PHX
Phoenix
£279 Return, found 4 hours ago
£279
Return
found 4 hours ago
Select Delta flight, departing Fri, 13 Nov from Washington to Phoenix, returning Mon, 16 Nov, priced at £279 found 4 hours ago
Alaska Airlines
Sun, 15 Nov - Mon, 16 Nov
IAD
Washington
PHX
Phoenix
£287 Return, found 3 hours ago
£287
Return
found 3 hours ago
Select Alaska Airlines flight, departing Sun, 15 Nov from Washington to Phoenix, returning Mon, 16 Nov, priced at £287 found 3 hours ago
Alaska Airlines
Tue, 29 Sept - Tue, 13 Oct
IAD
Washington
PHX
Phoenix
£290 Return, found 4 days ago
£290
Return
found 4 days ago
Select Alaska Airlines flight, departing Tue, 29 Sept from Washington to Phoenix, returning Tue, 13 Oct, priced at £290 found 4 days ago
American Airlines
Tue, 3 Nov - Fri, 13 Nov
IAD
Washington
PHX
Phoenix
£294 Return, found 1 day ago
£294
Return
found 1 day ago
Select American Airlines flight, departing Tue, 3 Nov from Washington to Phoenix, returning Fri, 13 Nov, priced at £294 found 1 day ago
United
Sat, 14 Nov - Mon, 16 Nov
IAD
Washington
PHX
Phoenix
£312 Return, found 3 hours ago
£312
Return
found 3 hours ago
Select United flight, departing Sat, 14 Nov from Washington to Phoenix, returning Mon, 16 Nov, priced at £312 found 3 hours ago

Alternative airports near Phoenix

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sky Harbor Intl. PHX. Cheapest and Closest option available. Average driving time to city centre is 10 minutes. Flights from £365
PHX
Sky Harbor Intl.
CheapestClosest
Average driving time to city centre10 min
Flights from £365

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

October is typically the cheapest month to fly

From £173 - £261 per traveller.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) cost?
You can find cheap one-way flights from £125 and cheap return flights from £249 IAD to PHX with Expedia. One-way flights typically cost between £218 and £696. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when IAD to PHX ticket fares go up or down.
What is the cheapest month to fly from Washington, DC (IAD) to Phoenix, AZ (PHX)?
The cheapest months to fly from Washington, DC (IAD) to Phoenix, AZ (PHX) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
There are 2 airlines offering direct flights from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.). These include:
  • United operates 10 direct flights from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) every week.
  • Southwest Airlines operates 7 direct flights from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) every week.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. United offers the most daily flights from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Washington, DC (IAD) to Phoenix, AZ (PHX)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
You'll find around 2 nonstop flights per day from Washington Dulles Intl. (IAD) to Sky Harbor Intl. (PHX). For even more choices, look at flights that include layovers, as there are approximately 85 connecting flights per day. Some common connection points include Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN), and Charlotte-Douglas Intl. (CLT).
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The earliest flight from Washington Dulles Intl. (IAD) to Sky Harbor Intl. (PHX) typically departs around 5:00 AM. This service is operated by American Airlines. This is a seasonal service, active in February and March. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
You'll generally find the most flights from Washington Dulles Intl. (IAD) to Phoenix, AZ (PHX) on a Thursday, with around 54 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include United, Delta, and American Airlines. Flight schedules are quite consistent throughout the week, so you'll have plenty of choices no matter which day you choose to fly.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
The most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) are in the early morning, from 6am to 9am. Many major carriers, including United, American Airlines and Delta, offer flights during this window. Many travellers prefer these times as they allow for an early start to their journey, getting you to your destination with plenty of time left in the day.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
A direct flight from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) typically takes around 5 hours 18 minutes, covering a distance of approximately 3,143 kilometers. If you opt for a flight with one stop, your journey will usually be longer, taking about 7 hours 18 minutes. Flights with two or more stops generally take even more time, averaging around 12 hours 18 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some flexibility in your travel plans.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
Yes, you can fly business class or first class between IAD and PHX.Airlines that offer business class service on this route include:
  • Frontier Airlines
  • Delta
First class cabins are available on:
  • Alaska Airlines
  • United
  • Delta
  • American Airlines
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Phoenix, AZ (PHX) from Washington, DC (IAD)?
If you're planning to travel to Phoenix from Washington Dulles Intl. (IAD), you can fly directly into Sky Harbor Intl. (PHX). Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN), or San Diego Intl. (SAN) before reaching Phoenix. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Phoenix, AZ (PHX-Sky Harbor Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Sky Harbor Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Return price
£249
Distance
3123 km
Average flight time
3 hours 54 mins

Book with confidence

Compare flights from Washington to Phoenix easily and book with confidence

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

The easiest way to view the best deals on flights from Washington to Phoenix 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 Washington Dulles Intl. to Sky Harbor Intl. start at just £249 and range up to £312.  

To find an even better deal, try  

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

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

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to Sky Harbor 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.  

Compare flights from Washington to Phoenix easily and book with confidence

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*Available to Expedia members.