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Cheap flights from San Francisco International to Seattle

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Flight deals from San Francisco International to Seattle

Looking for a cheap last-minute deal or the best round-trip flight from San Francisco International to Seattle? Find the lowest prices on one-way and round-trip tickets right here.
Seattle.C$176 per passenger.Departing Sun, Aug 24, returning Sun, Aug 31.Round-trip flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departing from San Francisco International on Sun, Aug 24, arriving in Seattle / Tacoma International.Inbound direct flight with Hawaiian Airlines departing from Seattle / Tacoma International on Sun, Aug 31, arriving in San Francisco International.Price includes taxes and charges.From C$176, select.
Seattle.C$178 per passenger.Departing Wed, Sep 3, returning Wed, Sep 17.Round-trip flight with Hawaiian Airlines.Outbound direct flight with Hawaiian Airlines departing from San Francisco International on Wed, Sep 3, arriving in Seattle / Tacoma International.Inbound direct flight with Hawaiian Airlines departing from Seattle / Tacoma International on Wed, Sep 17, arriving in San Francisco International.Price includes taxes and charges.From C$178, select.
Seattle.C$179 per passenger.Departing Wed, Aug 27, returning Wed, Sep 3.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from San Francisco International on Wed, Aug 27, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departing from Seattle / Tacoma International on Wed, Sep 3, arriving in San Francisco International.Price includes taxes and charges.From C$179, select.
Seattle.C$179 per passenger.Departing Sat, Oct 4, returning Sat, Oct 11.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from San Francisco International on Sat, Oct 4, arriving in Paine Field.Inbound direct flight with Alaska Airlines departing from Paine Field on Sat, Oct 11, arriving in San Francisco International.Price includes taxes and charges.From C$179, select.
Seattle.C$180 per passenger.Departing Tue, Nov 11, returning Sat, Nov 15.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from San Francisco International on Tue, Nov 11, arriving in Paine Field.Inbound direct flight with Alaska Airlines departing from Paine Field on Sat, Nov 15, arriving in San Francisco International.Price includes taxes and charges.From C$180, select.
Seattle.C$180 per passenger.Departing Mon, Sep 29, returning Thu, Oct 2.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from San Francisco International on Mon, Sep 29, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departing from Seattle / Tacoma International on Thu, Oct 2, arriving in San Francisco International.Price includes taxes and charges.From C$180, select.
Seattle.C$210 per passenger.Departing Fri, Oct 31, returning Mon, Nov 3.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from San Francisco International on Fri, Oct 31, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departing from Seattle / Tacoma International on Mon, Nov 3, arriving in San Francisco International.Price includes taxes and charges.From C$210, select.
Seattle.C$211 per passenger.Departing Thu, Dec 11, returning Mon, Dec 15.Round-trip flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departing from San Francisco International on Thu, Dec 11, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departing from Seattle / Tacoma International on Mon, Dec 15, arriving in San Francisco International.Price includes taxes and charges.From C$211, select.

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

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 flights are currently cheapest in August.
Jul
from C$239
Aug
from C$176
Sep
from C$178
Oct
from C$179
Nov
from C$180
Dec
from C$211
Jan
from C$240
Feb
from C$241
Mar
from C$238
Apr
from C$240
May
from C$239
Jun
Find prices

Direct flights from San Francisco International to Seattle

Alternative San Francisco International to Seattle routes

Looking for the cheapest, fastest or easiest route from San Francisco International to Seattle? You could fly into the following airports instead.

San Francisco to Seattle: Flight information

The things to know before you go.
Cheapest flight foundC$176
Cheapest month to flyAugust
Average flight time2 hrs, 10 mins
Most popular airlineAir Tahiti Nui
Average flights per week2,026

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

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a round-trip flight from San Francisco International to Seattle is C$176. 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 9 minutes is the average flight time from San Francisco International to Seattle.
Air Tahiti Nui, Qatar Airways and United fly direct from San Francisco International to Seattle.
There are 2,096 flights per week flying from San Francisco International to Seattle, as of July 2025.
The cheapest month to fly from San Francisco International to Seattle is usually August.
If you're flying from San Francisco International Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the center of Seattle. We've found flights to this airport from C$176.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Francisco International Airport to Seattle on Sunday, August 24, 2025.
Yes – the average flight time is 2 hours and 9 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 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 Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In July, the average temperature is usually around 17°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Hawaiian Airlines offers the cheapest flight tickets to Seattle.

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

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

  • Seattle's timezone is UTC-7, which is the same as San Francisco (the location of San Francisco International Airport).

  • With 138 flights a week between the two airports, San Francisco International Airport (SFO) to Seattle-Tacoma International Airport (SEA) is the most popular route. Alaska Airlines operates the earliest flight at 06:00. If you prefer to get more out of your day before flying, the latest flight from SFO to SEA is with United Airlines at 23:15.

  • For stress-free travel, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you enough time to board your SFO to Seattle flight.

  • Longer lines at security and check-in are more likely if you're jetting off during high season, so allow some extra breathing space. A good general rule for peak times? Get there up to four hours ahead for international flights and two hours for domestic departures.

  • You can book a direct San Francisco International Airport to Seattle ticket. Start your trip at SFO and end it at Seattle-Tacoma International Airport (SEA).

  • Well-known carriers that operate direct flights from San Francisco International Airport to Seattle include:

  • Located around 18 kilometres from the centre of San Francisco, SFO can be reached in about 20 minutes by car, depending on traffic. Travelling on public transport will take roughly 45 minutes.

  • Want a relaxed start to your travels? Stay near SFO. Whether you're taking an early flight from San Francisco International Airport to Seattle or just don't want to be rushed, these hotels are a convenient choice:

  • 77.36% of flights leaving from San Francisco International Airport make it to their destination on time.

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

  • C$85 is currently the best price for a one-way San Francisco International Airport to Seattle flight. Return flight tickets start at C$176. These prices may change depending on demand and availability.

  • To pick up cheap flights from SFO to Seattle, book your trip one month before your planned departure.

  • The best month for finding cheap San Francisco International Airport to Seattle tickets is May. Use the 'Whole month' tool to compare prices, then choose the dates offering the lowest fares.

  • Spend less time searching for cheap flights from SFO to Seattle by creating a Price Alert. You'll get an email or push notification on the app when a special offer becomes available.

  • Choose your ideal departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from San Francisco International Airport to Seattle by 'Best,' 'Fastest' or 'Cheapest.'

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) to central Seattle takes about 20 minutes by car. The centre is roughly 23 kilometres away.

  • Getting to the centre by public transport takes about 55 minutes.

  • If you're arriving on a late flight from San Francisco International Airport to Seattle, nothing beats the convenience of staying near the terminal. Pick up your bags from the carousel and then be showered and relaxing soon after at one of these hotels near SEA:

  • Begin your adventure by picking up a Seattle-Tacoma International Airport rental car. Grab a set of wheels from Thrifty, Europcar or Budget to explore Seattle and beyond.

  • For the lowest price, book your ride from Seattle-Tacoma International Airport around one week ahead of your flight from SFO to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • Central Seattle is around 3 kilometres from Lake Union Sea Plane Base Airport (LKE). Once your flight from San Francisco International Airport to Seattle has touched down and you've made your way to arrivals, the drive should take about 10 minutes.

  • If you choose to travel on public transport, you'll get to the city centre in 25 minutes or so.

  • Hang up the 'Do not disturb' sign and unwind at a hotel close to LKE. Here are a few options where you can take a load off after your SFO to Seattle flight:

Best time to go to Seattle

  • Carefully consider your travel dates before booking your flight from San Francisco International Airport to Seattle. The city comes alive during peak season, but hotel prices are generally higher and major attractions can be busy. Plan your trip to Seattle in the low season if you prefer a more relaxed vibe.

  • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Lock in your San Francisco International Airport to Seattle flight ticket then if that's the weather you find most pleasant.

  • If you want cooler conditions, search for a cheap ticket from SFO to Seattle in February when temperatures average between -1ºC (30ºF) and 11ºC (52ºF).

More about Seattle

  • Start your Seattle trip right by choosing the perfect place to stay. As soon as you've booked your flight from San Francisco International Airport to Seattle, explore our range of hotels including:

  • There are so many things to see and do in this city it can be hard to know where to begin. LMN Architects, Greyhound: Bus Station and Boeing Radiation Effects Lab are top attractions which should be on every Seattle itinerary.

Explore more of United States

  • You've done Seattle, now it's time to discover more of United States. Travel around 241 kilometres south to Portland to tick off its must-visit sights. From Pioneer Courthouse Square to Portland Japanese Garden and Pittock Mansion, you'll have a packed itinerary ahead.

  • Spokane is another essential stop in United States and is around 370 kilometres east of Seattle. No trip is complete without visiting Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

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.