Cheap Alaska Airlines flights Seattle (SEA) to Phoenix (PHX)

Use the “Price (lowest to highest)” filter on Expedia to look for cheap Alaska Airlines round-trip flights from SEA to PHX. Affordable one-way fares are also available.**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.

Alaska Airlines flights to Phoenix are usually cheaper in the low-season months of July and August. Whether you’re searching for a one-way or round-trip ticket, you could find a better deal then.

Begin your search one to three months before your departure to get cheaper fares on Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Sky Harbor Intl. Airport (PHX). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing spot on, and you can enjoy significant savings on domestic flights.*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.

Yes, you can travel from Seattle - Tacoma Intl. Airport (SEA) to Sky Harbor Intl. Airport (PHX) on one of Alaska Airlines’s 61 weekly direct flights. Use Expedia’s “Nonstop” and “Airline” filters to find the Alaska Airlines flight that’ll get you to PHX at your preferred time.

Take off from Seattle - Tacoma Intl. Airport (SEA) for Sky Harbor Intl. Airport (PHX) on a direct Alaska Airlines flight, and you’ll be in the skies for about 2h 52m.

Alaska Airlines operates the most flights from Seattle - Tacoma Intl. Airport (SEA) to Sky Harbor Intl. Airport (PHX) on Sunday. With up to 10 daily departures, you’ll get the most flexibility on this day.

Departing SEA at 6:00AM UTC-8, the earliest Alaska Airlines flight to PHX arrives at 9:49AM UTC-7. Flying earlier in the day means you’re less likely to experience cancellations.* After something later? The last Alaska Airlines flight from SEA to PHX departs at 8:10PM UTC-8 and touches down at 11:59PM UTC-7.*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.

Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Phoenix arrive at Sky Harbor Intl. Airport (PHX). This is the main entry point to this destination.

Alaska Airlines makes traveling from SEA to PHX more comfortable with an excellent in-flight experience and top-tier customer service. You even have the chance to collect points with Mileage Plan. Make sure you sign up to Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the Seattle - Tacoma Intl. Airport (SEA) to Sky Harbor Intl. Airport (PHX) route, Alaska Airlines typically flies Boeing 737 MAX 9 and Boeing 737-900 planes. Keep in mind that last-minute changes are possible for operational reasons, meaning your flight could be on another aircraft.

Changes are usually free within 24 hours of making a booking, but your airline may charge you after that time. For more details about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you want the freedom to make changes without additional charges, tick the “No cancel fee” or “Changes included” filter when organizing your next getaway.