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Cheap flights from San Francisco to Seattle from $110

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Seattle departing on 29/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from San Francisco to Seattle

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from San Francisco to Seattle.
08:00 - 10:12SFO-SEA
2h 12mdirect
13:40 - 15:53SEA-SFO
2h 13mdirect
$208Alaska Airlines
Find Deal
Sat, 3 May - Sat, 3 May
18:49 - 20:59SFO-SEA
2h 10mdirect
07:00 - 09:15SEA-SFO
2h 15mdirect
$210Hawaiian Airlines
Find Deal
Wed, 7 May - Wed, 14 May
07:00 - 09:09SFO-SEA
2h 09mdirect
18:49 - 21:00SEA-SFO
2h 11mdirect
$218Alaska Airlines
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Tue, 20 May - Sat, 24 May
11:05 - 16:24SFO-SEA
5h 19m1 stop
19:59 - 22:13SEA-SFO
2h 14mdirect
$219Hawaiian Airlines
Find Deal
Wed, 7 May - Wed, 14 May
09:10 - 11:38SFO-SEA
2h 28mdirect
06:10 - 08:27SEA-SFO
2h 17mdirect
$237Delta
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Sat, 3 May - Mon, 5 May
06:10 - 08:30SFO-SEA
2h 20mdirect
21:50 - 00:04SEA-SFO
2h 14mdirect
$242Delta
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Sat, 7 Jun - Sat, 7 Jun
08:00 - 13:59SFO-SEA
5h 59m1 stop
14:40 - 16:57SEA-SFO
2h 17mdirect
$283United Airlines
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Sun, 20 Apr - Sat, 10 May
06:30 - 08:49SFO-SEA
2h 19mdirect
06:25 - 11:59SEA-SFO
5h 34m1 stop
$291United Airlines
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Mon, 26 May - Fri, 30 May
05:40 - 11:25SFO-SEA
5h 45m1 stop
12:00 - 20:10SEA-SFO
8h 10m2 stops
$334Southwest
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Tue, 6 May - Sat, 10 May
12:45 - 22:30SFO-SEA
9h 45m2 stops
10:10 - 18:10SEA-SFO
8h 00m2 stops
$342Southwest
Find Deal
Tue, 6 May - Thu, 8 May

Hawaiian Airlines flights from San Francisco to Seattle

Our best Hawaiian Airlines deals on San Francisco to Seattle flight tickets
Hawaiian Airlines
7 May
SFO18:49San Francisco
2h 10m
SEA20:59Seattle/Tacoma Intl
14 May
SEA07:00Seattle/Tacoma Intl
2h 15m
SFO09:15San Francisco
Hawaiian Airlines
7 May
SFO11:05San Francisco
5h 19m
1 stop
SEA16:24Seattle/Tacoma Intl
14 May
SEA19:59Seattle/Tacoma Intl
2h 14m
SFO22:13San Francisco
Hawaiian Airlines
13 June
SFO14:30San Francisco
3h 50m
1 stop
SEA18:20Seattle/Tacoma Intl
15 June
SEA05:25Seattle/Tacoma Intl
3h 24m
1 stop
SFO08:49San Francisco

United Airlines flights from San Francisco to Seattle

Our best United Airlines deals on San Francisco to Seattle flight tickets
United Airlines
20 Apr
SFO08:00San Francisco
5h 59m
1 stop
SEA13:59Seattle/Tacoma Intl
10 May
SEA14:40Seattle/Tacoma Intl
2h 17m
SFO16:57San Francisco
United Airlines
26 May
SFO06:30San Francisco
2h 19m
SEA08:49Seattle/Tacoma Intl
30 May
SEA06:25Seattle/Tacoma Intl
5h 34m
1 stop
SFO11:59San Francisco
United Airlines
23 May
SFO06:30San Francisco
2h 19m
SEA08:49Seattle/Tacoma Intl
27 May
SEA06:25Seattle/Tacoma Intl
5h 34m
1 stop
SFO11:59San Francisco

See travel insights to Seattle from

How to get the cheapest flight ticket from San Francisco to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seattle?

The month of October is, on average, the cheapest month to fly to Seattle from San Francisco, with most prices found around $313. If you are unable to visit Seattle during the month of October, then departing from San Francisco during the month January is also very affordable. Most momondo users find prices during this month for around $318.

What is the cheapest day to depart on your flight to Seattle?

The cheapest day to depart from San Francisco to Seattle is on a Monday. Travellers who choose to depart for Seattle on a Monday will often find tickets for as low as $0. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to Seattle for around $569.

What is the cheapest time of day to depart on your flight to Seattle?

According to our data, the cheapest time of day to fly to Seattle is in the afternoon. momondo users have found flights departing from San Francisco to Seattle in the afternoon for as low as $320. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Seattle is at midday when prices are around $778.

What is the cheapest San Francisco to Seattle/Tacoma Intl flight route?

Fly from San Francisco to Seattle/Tacoma Intl for the best San Francisco - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from San Francisco when booking 26 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $390 when searching 26 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from San Francisco for as low as $250 on momondo.

What cabin class options are available on San Francisco to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on San Francisco to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have San Francisco to Seattle flight prices changed over time?

As of March 2025, prices for San Francisco to Seattle flights are approximately 20% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap San Francisco to Seattle (SFO to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Seattle

Best price found

$110

Fastest flight time

2h 04m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from San Francisco in the past 72 hours is $110. The best return flight deal from San Francisco to Seattle found on momondo in the last 72 hours is $208.
The fastest flight from San Francisco to Seattle takes 2h 04m
Direct flights go from San Francisco to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • Is flying the fastest way to get from San Francisco to Seattle?

    At 2h 04m, choosing to opt for a flight from San Francisco to Seattle for this trip as opposed to a train from San Francisco to Seattle or a bus from San Francisco to Seattle can save you time on travel.

  • Is flying the cheapest way to get from San Francisco to Seattle?

    Expect a flight to be one of the cheapest options available to you for travel. Currently, a flight has deals available from $208. While they may not be the most cost-effective options currently available a train from San Francisco to Seattle or a bus from San Francisco to Seattle can also be options worth looking into if other factors outside of cost are a higher priority.

  • How far is San Francisco to Seattle/Tacoma Intl by plane?

    There are 1091.5 km between San Francisco and Seattle/Tacoma Intl. In terms of flight time, this usually takes a little over 2h 04m.

  • What is the carbon footprint of flying from San Francisco to Seattle/Tacoma Intl?

    Flying from San Francisco to Seattle/Tacoma Intl has a carbon footprint of about 250kg. Flight search results on momondo can be sorted by their carbon footprint. Taking the train instead of flying would reduce your CO2 emissions by around 73%. By bus, this journey’s emissions can be cut to 43kg. This would result in a 83% smaller carbon footprint vs. flying.

  • When did momondo last update prices for flights from San Francisco Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from San Francisco Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from San Francisco Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from San Francisco Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Francisco to Seattle?

  • What is the most popular airline from San Francisco to Seattle?


Best airlines flying from San Francisco to Seattle

Compare and see reviews for airlines that fly from San Francisco to Seattle with momondo
Airline
Rating
Free cancellation
Price
Alaska AirlinesPriceFrom $216Free cancellationRating
8.0
9,818 reviews
Search Alaska Airlines flights
  • Alaska Airlines Flights From San Francisco to Seattle

    Across 12 Alaska Airlines flights from San Francisco to Seattle this week, the average price was $199, with the best Alaska Airlines deals starting from $136 round-trip. 9,808 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.


Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
SeaTac
Redmond

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Seattle?

Finding the right flight to Seattle from San Francisco is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seattle quick and easy, saving you time and money.

Can I find flights from San Francisco to Seattle with flexible booking policies on momondo?

Yes. All flights to Seattle from San Francisco on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from San Francisco to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from San Francisco.

I’m not ready to book a flight from San Francisco to Seattle right now. Can momondo alert me if prices change?

Price alerts on flights to Seattle from San Francisco are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


Choose the best way to get from San Francisco to Seattle

Buses

18h 15m
$143 one-way$281 return
Direct · from $281

Distance to city centre

US31458115.1 km
40H2.6 km
43kg CO2

83% less than flights

Find Buses

San Francisco to Seattle Buses

Trains

22h 10m
$192 one-way$407 return
Direct · from $407

Distance to city centre

EA91.8 km
69kg CO2

73% less than flights

Find Trains

San Francisco to Seattle Trains

Flights

2h 10m
$110 one-way$208 return
Direct · from $2081 stop · from $210

Distance to city centre

SEA18.4 km

An easier way to manage your Seattle trip

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Airports servicing Washington