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San Francisco to Seattle - Flights Starting at US$33

Book one-way or return flights from San Francisco to Seattle from as little as US$33. Choose from the popular airlines below and book your flight today!

  • One way
  • Round-trip

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

We've found these cheap flights for you. You may book a one-way or round trip as per your needs.

We monitor flight fares to help you seize 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 Francisco to Seattle

View airlines operating flights from San Francisco 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$33
Alaska Airlines
From US$51
American Airlines
From US$74
Delta Air Lines
From US$83
United Airlines
From US$91
Southwest Airlines
From US$99
Sun Country Airlines
From US$211
ANA airlines

Find more flights and airlines

Alternative Routes from San Francisco to Seattle

Discover different routes, airlines, and transfers and find the best alternative flights for your journey from San Francisco to Seattle.

  • Cheapest
    Frontier Airlines
    SFO
    05:15
    7h 7m
    1 transfer
    SEA
    12:22
    San Francisco International Airport - Seattle-Tacoma International Airport
    Tue, Aug 20Frontier Airlines
    US$33
  • Frontier Airlines
    SFO
    05:15
    7h 7m
    1 transfer
    SEA
    12:22
    San Francisco International Airport - Seattle-Tacoma International Airport
    Tue, Aug 20Frontier Airlines
    US$33
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from San Francisco (SFO) to Seattle (SEA) the cheapest?

    Airlines adjust prices for flights from San Francisco 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 Francisco (SFO) to Seattle (SEA) cost?

    According to Trip.com's data, the lowest price is around $251.
  • How long does it take to fly from San Francisco (SFO) to Seattle (SEA) and what is the distance?

    It takes around 2 hours 12 minutes to fly from San Francisco (SFO) 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 Francisco (SFO) to Seattle (SEA)?

    Airlines with flights from San Francisco (SFO) to Seattle (SEA): Alaska Airlines, United Airlines, Qatar Airways, Delta Air Lines, Iberia, Air Tahiti Nui, WestJet, American Airlines and Air France.

How to find a cheap flight from San Francisco to Seattle

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from San Francisco to Seattle. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com
San Francisco to Seattle Flight Information

Cheapest nonstop flight price

$33

Cheapest round-trip ticket price

$126

Off-season for travel

May

Peak season for travel

December

Flight distance

1,093.2km

Average flight time

2 hours 12 minutes

Popular airline

Alaska Airlines