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Find cheap one-way flights from San Diego to Seattle starting at US$45.

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 San Diego 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 San Diego 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$75
Delta Air Lines
From US$78
Spirit Airlines
From US$90
American Airlines
From US$97
Southwest Airlines
From US$114
United Airlines
From US$115
Alaska Airlines
From US$253
Hawaiian Airlines
From US$576
ANA airlines

Find more flights and airlines

Find cheap flights from San Diego to Seattle by different airports

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

  • Cheapest
    Spirit Airlines
    SAN
    22:20
    10h 25m
    1 transfer
    SEA
    08:45
    San Diego International Airport - Seattle-Tacoma International Airport
    Tue, Apr 9Spirit Airlines
    US$90
  • Spirit Airlines
    SAN
    22:20
    10h 25m
    1 transfer
    SEA
    08:45
    San Diego International Airport - Seattle-Tacoma International Airport
    Tue, Apr 9Spirit Airlines
    US$90
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from San Diego (SAN) to Seattle (SEA) the cheapest?

    Airlines adjust prices for flights from San Diego 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 San Diego (SAN) to Seattle (SEA) cost?

    According to Trip.com's data, the lowest price is around $295.
  • How long does it take to fly from San Diego (SAN) to Seattle (SEA) and what is the distance?

    It takes around 3 hours 2 minutes to fly from San Diego (SAN) 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 San Diego (SAN) to Seattle (SEA)?

    Airlines with flights from San Diego (SAN) to Seattle (SEA): Qatar Airways, Alaska Airlines, WestJet, Air Tahiti Nui, KLM, American Airlines, Delta Air Lines and Condor Airlines.

San Diego to Seattle Flight Information

Cheapest nonstop flight price

$44

Cheapest round-trip ticket price

$117

Off-season for travel

January

Peak season for travel

September