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Cheap Flights from San Francisco (SFO) to Seattle (BFI)

Compare San Francisco International to Seattle Boeing Fld flight deals

Find the cheapest month or even day of the year to fly to Seattle Boeing Fld

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Flight deals from San Francisco International to Seattle Boeing Fld

Looking for a cheap last-minute deal or the best return flight from San Francisco International to Seattle Boeing Fld? Find the lowest prices on one-way and return tickets right here.
Seattle.$1,399 per passenger.Departing Thu, 10 Jul, returning Thu, 17 Jul.Return flight with Alaska Airlines and Air Excursions, LLC.Outbound indirect flight with Alaska Airlines, departs from San Francisco International on Thu, 10 Jul, arriving in Seattle Boeing Fld.Inbound indirect flight with Air Excursions, LLC, departs from Seattle Boeing Fld on Thu, 17 Jul, arriving in San Francisco International.Price includes taxes and charges.From $1,399, select.
Seattle.$1,897 per passenger.Departing Sat, 21 Jun, returning Sun, 22 Jun.Return flight with Alaska Airlines and Air Excursions, LLC.Outbound indirect flight with Alaska Airlines, departs from San Francisco International on Sat, 21 Jun, arriving in Seattle Boeing Fld.Inbound indirect flight with Air Excursions, LLC, departs from Seattle Boeing Fld on Sun, 22 Jun, arriving in San Francisco International.Price includes taxes and charges.From $1,897, select.

Find the cheapest month to fly from San Francisco International to Seattle Boeing Fld

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Francisco International to Seattle Boeing Fld flights are currently cheapest in July.
Jun
from $1,897
Jul
from $1,399
Aug
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Sep
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Oct
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Nov
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Dec
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Jan
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Feb
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May
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Direct flights from San Francisco International to Seattle Boeing Fld

San Francisco International to Seattle Boeing Fld: Alternative routes

Compare routes from San Francisco International to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle Boeing Fld.

San Francisco to Seattle: Flight information

The things to know before you go.
Cheapest flight found$1,399
Cheapest month to flyJuly
Average flight time2 hrs, 5 mins
Most popular airlineUnited
Average flights per week1

Finding cheap flights from San Francisco International to Seattle Boeing Fld: Frequently asked questions

The best price we found for a return flight from San Francisco International to Seattle Boeing Fld is $1,399. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
2 hours and 5 minutes is the average flight time from San Francisco International to Seattle Boeing Fld.
United flies direct from San Francisco International to Seattle Boeing Fld.
As of June 2025, there is one flight per week flying from San Francisco International to Seattle Boeing Fld.
The cheapest month to fly from San Francisco International to Seattle Boeing Fld is usually June 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to Seattle Boeing Fld Airport on Thursday, 10 July 2025.
Yes – the average flight time is 2 hours and 5 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle Boeing Fld but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
Currently, Alaska Airlines offers the cheapest flight tickets to Seattle Boeing Fld.

How to find cheap flights to Seattle (BFI) from San Francisco (SFO) in 2024

Looking for cheap tickets from San Francisco International to Seattle Boeing Fld? Return tickets start from $1,399 and one-way flights to Seattle Boeing Fld from San Francisco International start from $635


Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets.
  • Compare flight deals to Seattle from San Francisco from over 1,000 providers. Then choose the cheapest or fastest plane tickets. Flight tickets to Seattle start from $635 one-way.
  • Flex your dates to find the best SFO-BFI ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Seattle Boeing Fld from San Francisco International.
  • Set up a Price Alert. You can easily track the fare of your cheap flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Fly without stops. Only interested in direct flights between San Francisco International and Seattle Boeing Fld? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results. Airlines that fly direct include: United
  • Find the cheapest Business class flights from San Francisco International and Seattle Boeing Fld. We scour the internet for the best Business, Premium Economy and First Class flight fares to Seattle, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
  • Include nearby airports in your search. Widen your search for San Francisco International to Seattle Boeing Fld flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.
  • Search for cheap flights regardless of where you are. To get the best flight booking experience when out and about, download the app and search for plane tickets between San Francisco International and Seattle Boeing Fld whenever you want.

Combine your flight to Seattle Boeing Fld from San Francisco International with hotels and car hire

Once you've secured your cheap flight ticket from San Francisco International to Seattle Boeing Fld, discover the best prices and exclusive rates for hotels in Seattle or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.


Plan the rest of your trip from San Francisco to Seattle

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.