Cheap Flights from Seattle (SEAA) to San Francisco International (SFO)

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Flight deals from Seattle to San Francisco International Airport

Looking for a cheap last-minute deal or the best return flight from Seattle to San Francisco International Airport? If you want to travel next month, return fares start from £68. Find the lowest prices on one-way and return tickets right here.

San Francisco.£68 per passenger.Departing Tue, 28 Apr, returning Wed, 29 Apr.Return flight with United.Outbound direct flight with United departs from Seattle / Tacoma International on Tue, 28 Apr, arriving in San Francisco International.Inbound direct flight with United departs from San Francisco International on Wed, 29 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £68, select.

San Francisco.£70 per passenger.Departing Sat, 25 Apr, returning Sat, 2 May.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Sat, 25 Apr, arriving in San Francisco International.Inbound direct flight with Alaska Airlines departs from San Francisco International on Sat, 2 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £70, select.

San Francisco.£71 per passenger.Departing Wed, 13 May, returning Sat, 16 May.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Wed, 13 May, arriving in San Francisco International.Inbound direct flight with Alaska Airlines departs from San Francisco International on Sat, 16 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £71, select.

San Francisco.£87 per passenger.Departing Tue, 31 Mar, returning Wed, 1 Apr.Return flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 31 Mar, arriving in San Francisco International.Inbound direct flight with Delta departs from San Francisco International on Wed, 1 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £87, select.

San Francisco.£101 per passenger.Departing Tue, 31 Mar, returning Tue, 31 Mar.Return flight with United.Outbound direct flight with United departs from Seattle / Tacoma International on Tue, 31 Mar, arriving in San Francisco International.Inbound direct flight with United departs from San Francisco International on Tue, 31 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £101, select.

San Francisco.£110 per passenger.Departing Thu, 14 May, returning Mon, 1 Jun.Return flight with United.Outbound direct flight with United departs from Seattle / Tacoma International on Thu, 14 May, arriving in San Francisco International.Inbound direct flight with United departs from San Francisco International on Mon, 1 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £110, select.

San Francisco.£131 per passenger.Departing Thu, 16 Apr, returning Sun, 21 Jun.Return flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Thu, 16 Apr, arriving in San Francisco International.Inbound direct flight with Delta departs from San Francisco International on Sun, 21 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £131, select.

San Francisco.£146 per passenger.Departing Wed, 10 Jun, returning Mon, 15 Jun.Return flight with United.Outbound direct flight with United departs from Seattle / Tacoma International on Wed, 10 Jun, arriving in San Francisco International.Inbound direct flight with United departs from San Francisco International on Mon, 15 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £146, select.

San Francisco.£155 per passenger.Departing Sat, 10 Oct, returning Sat, 24 Oct.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Sat, 10 Oct, arriving in San Francisco International.Inbound direct flight with Alaska Airlines departs from San Francisco International on Sat, 24 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £155, select.

San Francisco.£160 per passenger.Departing Wed, 8 Jul, returning Wed, 8 Jul.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Wed, 8 Jul, arriving in San Francisco International.Inbound direct flight with Alaska Airlines departs from San Francisco International on Wed, 8 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £160, select.

San Francisco.£161 per passenger.Departing Fri, 21 Aug, returning Mon, 24 Aug.Return flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 21 Aug, arriving in San Francisco International.Inbound direct flight with Delta departs from San Francisco International on Mon, 24 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £161, select.

San Francisco.£170 per passenger.Departing Fri, 4 Sep, returning Sat, 5 Sep.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Fri, 4 Sep, arriving in San Francisco International.Inbound direct flight with Alaska Airlines departs from San Francisco International on Sat, 5 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £170, select.

San Francisco.£175 per passenger.Departing Sat, 25 Jul, returning Tue, 11 Aug.Return flight with United.Outbound direct flight with United departs from Seattle / Tacoma International on Sat, 25 Jul, arriving in San Francisco International.Inbound direct flight with United departs from San Francisco International on Tue, 11 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £175, select.

San Francisco.£175 per passenger.Departing Tue, 30 Jun, returning Sat, 4 Jul.Return flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 30 Jun, arriving in San Francisco International.Inbound direct flight with Delta departs from San Francisco International on Sat, 4 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £175, select.

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 April.

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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 found	£68
Cheapest month to fly	April
Average flight time	2 hrs, 18 mins
Most popular airline	Alaska Airlines
Average flights per week	957

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

How much are return flights from Seattle to San Francisco International?

The best price we found for a return flight from Seattle to San Francisco International is £68. 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.

How long does it take to fly from Seattle to San Francisco International?

2 hours and 18 minutes is the average flight time from Seattle to San Francisco International.

Which airlines fly direct from Seattle to San Francisco International?

Alaska Airlines, United and Qatar Airways fly direct from Seattle to San Francisco International.

How many flights are there a week from Seattle to San Francisco International?

As of March 2026, there are 957 flights per week flying from Seattle to San Francisco International.

When is the cheapest time to fly from Seattle to San Francisco International?

The cheapest month to fly from Seattle to San Francisco International is usually April.

Which upcoming date is cheapest to fly from Seattle to San Francisco International Airport on?

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 Tuesday, 28 April 2026.

Can I get a direct flight from Seattle to San Francisco International Airport?

Yes – the average flight time is 2 hours and 18 minutes.

How can I find the best flight deal to San Francisco International?

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.

When is the best time to book flights to San Francisco?

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.

Which is the cheapest airline to fly from Seattle to San Francisco International with?

The cheapest airline that flies to San Francisco International is United .

Flying from Seattle to San Francisco International Airport (SFO): What you need to know

Get your trip planning underway by checking out the best departure point for your flight from Seattle to San Francisco International Airport (SFO). Explore the options for setting off from Seattle-Tacoma International Airport (SEA) or Seattle Paine Field International Airport (PAE), two of the city's main airports.
Jump on a direct Seattle to San Francisco International Airport flight and you'll be in the air for around 2 hours 15 minutes.
San Francisco (where San Francisco International Airport is located) and Seattle share the UTC-8 timezone. You can fly without needing to calculate any time difference.
The most popular route is from Seattle-Tacoma International Airport (SEA) to San Francisco International Airport (SFO), with 133 direct services every week. If you're eager to be on your way, the earliest flight from SEA to SFO is the 5am United Airlines service. If you need some extra time before takeoff, the last departure is at 9:50pm with Delta Air Lines.
To ensure you catch your flight from Seattle to SFO, allow plenty of time for things like check-in and baggage drop. Arriving two hours ahead of international departures and one hour before domestic flights is the general travel rule.
July is a popular time to fly out. If you're heading away then or around a major holiday like July Fourth, be there even earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international journeys.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

Go straight to your destination from Seattle-Tacoma International Airport (SEA). Nonstop flights from Seattle to San Francisco International Airport (SFO) are available from here.
You'll have your choice of airlines operating direct flights from Seattle to San Francisco International Airport leaving from SEA. Reserve your trip with one of these:
Alaska Airlines is the airline with the highest number of bookings for flights from SEA to SFO.
The carrier with the top on-time arrival rate on this route is United.
SEA is about 23 kms (14 miles) from central Seattle. If you're catching a taxi, ride-sharing or driving from the centre, it'll take you 25 minutes or so to get there, depending on traffic. If you're taking public transport, expect the trip time to be around 35 minutes.
Want a stress-free start to your break? Stay near Seattle-Tacoma International Airport. Whether you're catching an early flight from Seattle to San Francisco International Airport or want to avoid feeling rushed, these hotels are just what you're after:
80% of flights leaving Seattle-Tacoma International Airport reach their destination on time. Given its impressive on-time stats, you're unlikely to be delayed when flying out of SEA.

Seattle Paine Field International Airport (PAE)

Consider beginning your travels from Seattle Paine Field International Airport (PAE). You can book a direct Seattle to San Francisco International Airport (SFO) plane ticket from this popular hub.
From PAE, direct flights from Seattle to SFO are offered by Alaska Airlines.
Alaska Airlines is the top choice for bookings on the PAE to SFO route.
Alaska Airlines is the most punctual carrier flying from Seattle Paine Field International Airport to San Francisco International Airport, with 65.09% of its services landing on schedule.
On public transport, you can travel from central Seattle to PAE in around 1 hour 30 minutes. The airport is roughly 40 kms (25 miles) away, and making the journey by car will take approximately 40 minutes.
Kick off your holiday early with an extra night away from home. Before your Seattle to SFO flight, unwind in one of these hotels close to Seattle Paine Field International Airport:
Seattle Paine Field International Airport has a reputation for reliability and timeliness. 80% of flights taking off from here arrive right on target.

About San Francisco International Airport (SFO)

Have a late flight from Seattle to San Francisco International Airport? Don't let it stretch your travel day into tomorrow. Stay at one of these hotels near SFO and hit the lights earlier:
For the best deal, reserve your ride around one week ahead of your Seattle to San Francisco International Airport flight.

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

San Francisco International Airport is around 21 kms (13 miles) from the centre of San Francisco. It takes around 25 minutes or so to get to the city by car.
It takes around 35 minutes if you're travelling by public transport.

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

£32 is the lowest price for a one-way ticket from Seattle to San Francisco International Airport. A return flight starts at £68. These fares can change depending on demand.
Don't leave things to the last minute. You're more likely to walk away with cheap flights from Seattle to SFO if you book early. Airlines often offer some great early bird discounts.
If you can be flexible with your trip dates, try using the 'Whole month' search tool. It'll give you the cheapest price in each month when searching for your Seattle to San Francisco International Airport ticket.
You don't need to check every day to find out if fares have dropped when you set up a Price Alert. We'll notify you the moment a new deal shows up on plane tickets from Seattle to SFO.
Save on your flight from Seattle to San Francisco International Airport by using filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

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

It's time to figure out your travel dates for your flight from Seattle to San Francisco International Airport (SFO). July is when most people travel to San Francisco. If a slower pace sounds more appealing, head there in December.
Lock in a Seattle to SFO plane ticket departing in September if you want to experience the city during its warmest month. You can expect temperatures in San Francisco to range from 12ºC to 24ºC.
January has temperatures of between 5ºC and 16ºC. Look for cheap tickets from Seattle to San Francisco International Airport around that time if you want to travel in cooler conditions.

More about San Francisco

Start your San Francisco trip right by choosing the ideal place to stay. Once you've booked your flight from Seattle to San Francisco International Airport, check out our selection of hotels including:
You'll find plenty of exciting things to do in San Francisco when you're in the mood to sightsee. Start exploring at Golden Gate Bridge followed by Painted Ladies - Alamo Square and Alcatraz Island.

Explore more of the United States

San Francisco is always a good idea, but there are so many other parts of the United States just waiting to be explored. About 257 kms (160 miles) east of San Francisco, a trip to Fresno will keep you on the go. Don't miss top attractions like Forestiere Underground Gardens, Shinzen Japanese Garden and Fresno Chaffee Zoo.
If there's time to check out another major destination in the United States, head for Sacramento, roughly 129 kms (80 miles) northeast of San Francisco. California State Railroad Museum, Old Sacramento State Historic Park and Crocker Art Museum are among its highlights.