Cheap Flights from Seattle to San Francisco International

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Compare Seattle to San Francisco International flight deals

Find the cheapest month or even day of the year to fly to San Francisco International

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Flight deals from Seattle to San Francisco International

Looking for a cheap last-minute deal or the best return flight from Seattle to San Francisco International? Find the lowest prices on one-way and return tickets right here.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to San Francisco International flights are currently cheapest in May.

Direct flights from Seattle to San Francisco International

Seattle to San Francisco International: Alternative routes

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

Seattle to San Francisco: Flight information

The things to know before you go.
Cheapest flight found120 €
Cheapest month to flyMay
Average flight time2 hrs, 15 mins
Most popular airlineAlaska Airlines
Average flights per week2,048

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

The best price we found for a return flight from Seattle to San Francisco International is 120 €. 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 14 minutes is the average flight time from Seattle to San Francisco International.
Alaska Airlines, Air Tahiti Nui and WestJet fly direct from Seattle to San Francisco International.
As of April 2025, there are 2,048 flights per week flying from Seattle to San Francisco International.
The cheapest month to fly from Seattle to San Francisco International is usually April 2025.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to San Francisco International Airport on Wednesday, 7 May 2025.
Yes – the average flight time is 2 hours and 14 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 San Francisco International 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.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Francisco is around 40 days in advance, so don’t leave your flight to the last minute.
The cheapest airline that flies to San Francisco International is Hawaiian Airlines .

Travelling from Seattle to San Francisco International Airport (SFO): what you need to know

  • Start your trip at Seattle-Tacoma International Airport (SEA), the main airport in Seattle. Look for flights from Seattle to San Francisco International Airport (SFO) that fly out of this terminal.

  • Hop on a direct flight from Seattle to San Francisco International Airport and you'll be in the air for an average of 2 hours 15 minutes.

  • San Francisco's timezone is UTC-7, which is the same as Seattle. San Francisco International Airport is located in San Francisco.

  • With 164 direct weekly flights between the two airports, Seattle-Tacoma International Airport (SEA) to San Francisco International Airport (SFO) is the most popular route. United operates the earliest flight at 05:15. If you'd like to get more out of your day before you fly, the last flight from SEA to SFO is with Delta at 21:59.

  • To ensure you catch your flight from Seattle to SFO, leave enough time for things like baggage drop and finding your gate. Turning up two hours before international departures and an hour before domestic flights is the general travel rule.

  • July is a peak travel month. If you're heading away then or around a major holiday like Christmas, be there even earlier. Aim for at least two hours ahead for domestic flights and up to four hours for international journeys.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • You can book a direct flight from Seattle to San Francisco International Airport (SFO) departing from Seattle-Tacoma International Airport (SEA).

  • You'll have your choice of carriers operating direct flights from Seattle to San Francisco International Airport leaving from SEA. Book your seat with one of these:

  • The distance from central Seattle to SEA is approximately 23 kilometres. Use travel apps like Google Maps for the best route, whether you want to drive or use public transport.

  • Need a handy hotel near Seattle-Tacoma International Airport? If you're catching an early flight from Seattle to San Francisco International Airport, these stays will put you moments from check-in:

Lake Union Sea Plane Base (LKE)

  • Looking to fly out of Lake Union Sea Plane Base (LKE)? You can reserve a direct flight from Seattle to San Francisco International Airport (SFO) departing from this busy hub.

  • When leaving from LKE, you'll have your pick of airlines that have direct flights from Seattle to SFO. Soar above the clouds with any of these carriers:

  • You can reach LKE from the centre of Seattle in about 11 minutes by car (depending on traffic conditions). The ride by public transport takes roughly 23 minutes to travel the 3 kilometres or so.

  • Get your holiday started early with an extra night away from home. Before catching your flight from Seattle to SFO, take it easy in one of these hotels near Lake Union Sea Plane Base:

About San Francisco International Airport (SFO)

Getting from San Francisco International Airport (SFO) to central San Francisco

  • From San Francisco International Airport, San Francisco is approximately 21 kilometres away. It takes around 20 minutes to reach the centre driving.

  • It'll take around 47 minutes to get there using public transport.

How to find the cheapest flights from Seattle to San Francisco International Airport (SFO)

  • The lowest price we've found for a one-way ticket from Seattle to San Francisco International Airport is 59 €. The cheapest price for a return flight is 120 €. Remember fares can change due to availability at the time of booking.

  • Book 8 months before you want to travel. After crunching the numbers on our calendar, this is how far you should book ahead to secure cheap tickets from Seattle to SFO.

  • You'll land the best savings on your tickets from Seattle to San Francisco International Airport by travelling in May. Go one step further and use the 'Whole month' search tool to find the cheapest day to fly out.

  • Sign into your online account or use the app to set up a Price Alert. We'll notify you right away if the price has dropped. It's simple to do, and it'll save you the hassle of searching for a cheap ticket from Seattle to SFO every day.

  • Tailor your trip with filters. Pick your arrival and departure times, airlines and total journey duration. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest' flights from Seattle to San Francisco International Airport.

The best time to fly from Seattle to San Francisco International Airport (SFO)

  • It's time to plan your travel dates for your flight from Seattle to San Francisco International Airport. August is the busiest month to travel to San Francisco. If you prefer a quieter atmosphere, go in February.

  • Think about the kind of weather that'll suit your plans for San Francisco. September is known as the warmest month. Lock in your flights from Seattle to SFO sometime then and you can expect temperatures of between 12ºC and 22ºC.

  • January has average temperatures of between 6ºC and 16ºC. Search for cheap flights from Seattle to San Francisco International Airport sometime then if you want to travel in cooler conditions.

More about San Francisco

  • Start your San Francisco trip off on the right foot by choosing the ideal place to stay. After booking your flight from Seattle to San Francisco International Airport, check out our selection of hotels including:

  • There are so many things to do and see in this city it can be hard to know where to begin. Golden Gate Bridge, Alcatraz Island and Lombard Street are popular attractions which should be on every San Francisco itinerary.

Complete your San Francisco trip with a car rental

  • Choose one of our car rentals in San Francisco and explore the city at your own pace. Easily compare prices from trusted rental companies in one go after booking your hotel and cheap flights from Seattle to San Francisco International Airport.

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