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Find cheap one-way flights from Phoenix to Seattle starting at US$20.

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Phoenix to Seattle?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Phoenix to Seattle

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From US$20
Spirit Airlines
From US$54
Alaska Airlines
From US$55
Delta Air Lines
From US$74
Southwest Airlines
From US$85
United Airlines
From US$135
Sun Country Airlines
From US$208
American Airlines
From US$219
ANA airlines

Find more flights and airlines

Find cheap flights from Phoenix to Seattle by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Phoenix to Seattle.

  • Cheapest
    Frontier Airlines
    PHX
    05:30
    3h 25m
    Direct
    SEA
    08:55
    Sky Harbor International Airport - Seattle-Tacoma International Airport
    Wed, Apr 17Frontier Airlines
    US$20
  • Allegiant Air
    AZA
    06:00
    7h 35m
    2 transfer
    SEA
    13:35
    Phoenix-Mesa Gateway Airport - Seattle-Tacoma International Airport
    Fri, Apr 12Allegiant Air
    US$265
  • Allegiant Air
    AZA
    06:00
    7h 35m
    2 transfer
    SEA
    13:35
    Phoenix-Mesa Gateway Airport - Seattle-Tacoma International Airport
    Fri, Apr 12Allegiant Air
    US$265
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Phoenix (PHX) to Seattle (SEA) the cheapest?

    Airlines adjust prices for flights from Phoenix to Seattle based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Phoenix (PHX) to Seattle (SEA) cost?

    According to Trip.com's data, the lowest price is around $254.
  • How long does it take to fly from Phoenix (PHX) to Seattle (SEA) and what is the distance?

    It takes around 3 hours 7 minutes to fly from Phoenix (PHX) to Seattle (SEA).
  • What is the transportation method from the main airport to downtown in Seattle?

    • The distance from Seattle-Tacoma International Airport to downtown is about 17km. It takes about 30 minutes by taxi.
  • What are the most popular airlines that fly from Phoenix (PHX) to Seattle (SEA)?

    Airlines with flights from Phoenix (PHX) to Seattle (SEA): Alaska Airlines, Air Tahiti Nui, WestJet, American Airlines, Qatar Airways, Delta Air Lines and Frontier Airlines.

Phoenix to Seattle Flight Information

Cheapest nonstop flight price

$19

Cheapest round-trip ticket price

$49

Off-season for travel

November

Peak season for travel

September