90 € Cheap Flights from Seattle to San Francisco International

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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 September.

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 found90 €
Cheapest month to flySeptember
Average flight time2 hrs, 15 mins
Most popular airlineQatar Airways
Average flights per week921

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 90 €. 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.
Qatar Airways, Hawaiian Airlines and Air Tahiti Nui fly direct from Seattle to San Francisco International.
As of July 2025, there are 1,842 flights per week flying from Seattle to San Francisco International.
The cheapest month to fly from Seattle to San Francisco International is usually September.
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 Saturday, 6 September 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

  • Your adventure will begin at Seattle-Tacoma International Airport (SEA), the main airport in Seattle. Look for flights from Seattle to San Francisco International Airport (SFO) that leave from this terminal.

  • The average duration of a direct Seattle to San Francisco International Airport flight is 2 hours 15 minutes.

  • San Francisco (where San Francisco International Airport is located) and Seattle share the UTC-7 timezone. Easily coordinate travel plans without worrying about time differences.

  • Seattle-Tacoma International Airport (SEA) to San Francisco International Airport (SFO) is the most popular route. There are 138 direct weekly flights to pick from. If you have plans before you fly, take the last flight with Delta Air Lines at 9:50pm. Opt for the first SEA to SFO departure operated by United Airlines at 5am if you want to get going earlier.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Get to the airport on time to board your flight from Seattle to SFO.

  • In high season, allow for longer wait times and arrive earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international trips.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Fly without interruptions from Seattle-Tacoma International Airport (SEA). Nonstop flights from Seattle to San Francisco International Airport (SFO) operate from here.

  • You'll have your pick of carriers that operate direct flights from Seattle to San Francisco International Airport departing from SEA. Book your journey with one of these:

  • Alaska Airlines sees the most traveller bookings for flights from SEA to SFO.

  • Among carriers on this route, United Airlines has the best record for on-time arrivals.

  • Travelling from central Seattle to SEA takes about 55 minutes on public transport. If you ride-share, drive or get a cab, you'll cover the 23 kilometres in 20 minutes or so, depending on traffic conditions.

  • Want a relaxed start to your holiday? Stay near Seattle-Tacoma International Airport. Whether you've booked an early flight from Seattle to San Francisco International Airport or aren't a fan of being rushed, these hotels offer the perfect solution:

  • Seattle-Tacoma International Airport scores top marks for on-time performance. 81.27% of flights that depart SEA arrive at their destination without delay.

Lake Union Sea Plane Base Airport (LKE)

  • On public transport, you can travel from central Seattle to LKE in around 25 minutes. The airport is roughly 3 kilometres away, and making the trip by car will take approximately 10 minutes.

  • Want to enjoy an extra night away before your Seattle to SFO flight? Unwind in a hotel near Lake Union Sea Plane Base Airport before your trip officially begins. These stays are expecting you:

About San Francisco International Airport (SFO)

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

  • San Francisco International Airport to the centre of San Francisco is roughly 18 kilometres. If you're taking a cab or renting a car, plan ahead to make your trip as easy as possible. Journey times can vary depending on traffic conditions and the time of day.

  • Travelling by public transport typically takes 45 minutes.

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

  • 44 € is currently the lowest price for a one-way ticket from Seattle to San Francisco International Airport. A return flight starts from 90 €. These fares can change based on availability.

  • To find cheap flights from Seattle to SFO, book in advance. Airlines generally offer the most competitive fares when flights are first released.

  • The 'Whole month' search tool shows you the cheapest Seattle to San Francisco International Airport tickets across every month. It's a great way to snap up a bargain if your dates are flexible.

  • You don't need to search every day to find out if fares have dropped when you create a Price Alert. We'll notify you as soon as there's a better deal on plane tickets from Seattle to SFO.

  • Chase down a great fare on a flight from Seattle to San Francisco International Airport with the help of the filters. Choose your preferred arrival and departure times, number of stops and airlines. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest.'

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

  • Think about the kind of experience you want when deciding your trip dates. February is the quietest month to visit San Francisco. August is when most people book flights from Seattle to San Francisco International Airport (SFO), which may be ideal if you'd rather travel when it's busy.

  • Lock in a Seattle to SFO plane ticket departing in September if you want to experience the city during its warmest month. Expect temperatures in San Francisco to range from 12ºC (54ºF) to 22ºC (72ºF).

  • If you want cooler conditions, search for a cheap ticket from Seattle to San Francisco International Airport in January when temperatures are between 6ºC (43ºF) and 16ºC (61ºF).

More about San Francisco

Explore more of the United States

  • Fresno is just one of the many places in the United States waiting to be discovered once you've seen San Francisco. Around 257 kilometres away to the east, top sights here include Forestiere Underground Gardens, Shinzen Japanese Garden and Fresno Chaffee Zoo.

  • Around 129 kilometres north-east of San Francisco, Sacramento is another essential stop in the United States. Experience the best of this destination with a visit to Old Sacramento Waterfront, Fright Planet - America's Haunted Theme Park and California State Railroad Museum.

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