$129 Cheap Alaska Airlines flights Phoenix (PHX) to Washington (IAD)

View $129 flight on Sat, Oct 4, 2025Opens in a new window

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$129 Cheap Alaska Airlines flights Phoenix (PHX) to Washington (IAD)

Prices were available within the past 7 days and start at $129 for one-way flights and $258 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Aug 26 - Tue, Sep 2
PHX
Phoenix
IAD
Washington
$258 Roundtrip, found 9 hours ago
$258
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Tue, Aug 26 from Phoenix to Washington, returning Tue, Sep 2, priced at $258 found 9 hours ago
Flights from Phoenix (PHX) to Washington (IAD)
Origin airport
Sky Harbor Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Sun Country Airlines, United
Popular airline
United
Distance
1952 mi
Average flight time
7 hours 21 mins

Frequently asked questions

How much is an Alaska Airlines flight from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
Make use of the "Price (lowest to highest)" filter on Expedia to find cheap Alaska Airlines round-trip flights from $258 from PHX to IAD. Affordable one-way tickets from $129 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from PHX to IAD with Alaska Airlines?
Alaska Airlines flights to Washington tend to be more affordable in the low-season months of January and February. Whether you're searching for a return or one-way ticket, you could score a better deal then.
What is the cheapest time to book flights from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD) with Alaska Airlines?
To find cheap Alaska Airlines fares from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect what you pay. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Alaska Airlines fly nonstop from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
Fill in your dates, hit search and select "Nonstop" on Expedia to find any direct flights from PHX to IAD with Alaska Airlines or another carrier.
What is the earliest Alaska Airlines flight from PHX to IAD?
To find the earliest departure from PHX to IAD with Alaska Airlines, sort your results by "Morning" and "Early Morning." Choosing an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Alaska Airlines fly into in Washington?
Washington Dulles Intl. Airport (IAD) is the main Washington hub for Alaska Airlines flights from Sky Harbor Intl. Airport (PHX).
Why fly with Alaska Airlines from PHX to IAD?
Heading from PHX to IAD with Alaska Airlines means enjoying a host of benefits, including an excellent in-flight experience and a rewarding loyalty program. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to use on select future travel purchases. That's on top of the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Alaska Airlines flight from Sky Harbor Intl. Airport (PHX) to Washington Dulles Intl. Airport (IAD)?
It's generally possible to modify or cancel your flight, although additional fees may apply if you made your booking more than 24 hours ago. Need flexible options? Use our "No cancel fee" and "Changes included" filters to find flights that won't charge extra if you need to adjust your plans. To update your booking, visit "Trips," select your flight and click on "Manage Booking" for more details.

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