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Cheap flights from San Francisco to Seattle from $79

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 16/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from San Francisco to Seattle

Cheap return flights

Southwest Logo
17:25 - 22:50SFO-SEA
5h 25m1 stop
Southwest Logo
13:40 - 21:25SEA-SFO
7h 45m1 stop
$158Southwest
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Tue, 26 Aug - Wed, 27 Aug
Southwest Logo
16:45 - 00:05SFO-SEA
7h 20m1 stop
Southwest Logo
06:55 - 16:10SEA-SFO
9h 15m2 stops
$166Southwest
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Tue, 19 Aug - Sat, 23 Aug
Southwest Logo
07:50 - 18:40SFO-SEA
10h 50m2 stops
Southwest Logo
06:55 - 16:10SEA-SFO
9h 15m2 stops
$174Southwest
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Tue, 19 Aug - Sat, 23 Aug
Alaska Airlines Logo
16:44 - 18:54SFO-SEA
2h 10mdirect
Alaska Airlines Logo
20:26 - 22:40SEA-SFO
2h 14mdirect
$200Alaska Airlines
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Tue, 19 Aug - Tue, 19 Aug
Logo
21:19 - 23:35SFO-SEA
2h 16mdirect
Logo
13:40 - 15:52SEA-SFO
2h 12mdirect
$201
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Wed, 20 Aug - Tue, 26 Aug
Delta Logo
20:55 - 23:15SFO-SEA
2h 20mdirect
Delta Logo
21:31 - 23:43SEA-SFO
2h 12mdirect
$209Delta
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Wed, 6 Aug - Sat, 16 Aug
Delta Logo
05:55 - 08:05SFO-SEA
2h 10mdirect
Delta Logo
21:20 - 23:33SEA-SFO
2h 13mdirect
$210Delta
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Thu, 21 Aug - Mon, 25 Aug
Alaska Airlines Logo
06:00 - 08:04SFO-SEA
2h 04mdirect
Alaska Airlines Logo
07:05 - 09:16SEA-SFO
2h 11mdirect
$215Alaska Airlines
Find Deal
Mon, 11 Aug - Wed, 13 Aug
United Airlines Logo
16:45 - 18:58SFO-SEA
2h 13mdirect
United Airlines Logo
05:10 - 07:22SEA-SFO
2h 12mdirect
$227United Airlines
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Tue, 5 Aug - Fri, 8 Aug
United Airlines Logo
22:55 - 00:59SFO-SEA
2h 04mdirect
United Airlines Logo
05:10 - 07:22SEA-SFO
2h 12mdirect
$229United Airlines
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Mon, 4 Aug - Sat, 9 Aug

Southwest flights from San Francisco to Seattle

Our best Southwest deals on San Francisco to Seattle flight tickets
Southwest
26 Aug
SFO17:25San Francisco
5h 25m
1 stop
SEA22:50Seattle/Tacoma Intl
27 Aug
SEA13:40Seattle/Tacoma Intl
7h 45m
1 stop
SFO21:25San Francisco
$158
Find similar
Southwest
19 Aug
SFO16:45San Francisco
7h 20m
1 stop
SEA00:05Seattle/Tacoma Intl
23 Aug
SEA06:55Seattle/Tacoma Intl
9h 15m
2 stops
SFO16:10San Francisco
$166
Find similar
Southwest
19 Aug
SFO07:50San Francisco
10h 50m
2 stops
SEA18:40Seattle/Tacoma Intl
23 Aug
SEA06:55Seattle/Tacoma Intl
9h 15m
2 stops
SFO16:10San Francisco
$174
Find similar

Alaska Airlines flights from San Francisco to Seattle

Our best Alaska Airlines deals on San Francisco to Seattle flight tickets
Alaska Airlines
19 Aug
SFO16:44San Francisco
2h 10m
SEA18:54Seattle/Tacoma Intl
19 Aug
SEA20:26Seattle/Tacoma Intl
2h 14m
SFO22:40San Francisco
$200
Find similar
Alaska Airlines
11 Aug
SFO06:00San Francisco
2h 04m
SEA08:04Seattle/Tacoma Intl
13 Aug
SEA07:05Seattle/Tacoma Intl
2h 11m
SFO09:16San Francisco
$215
Find similar
Alaska Airlines
9 Oct
SFO08:20San Francisco
2h 14m
SEA10:34Seattle/Tacoma Intl
13 Oct
SEA07:00Seattle/Tacoma Intl
2h 16m
SFO09:16San Francisco
$221
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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 $299. 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 $305.

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 Thursday. Travellers who choose to depart for Seattle on a Thursday will often find tickets for as low as $307. 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 $746.

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 $291. 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 in the evening when prices are around $703.

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 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $367 when searching weeks before you fly. 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 $229 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 July 2025, prices for San Francisco to Seattle flights are approximately 2% 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

$79

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 $79. The best return flight deal from San Francisco to Seattle found on momondo in the last 72 hours is $158.
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)
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  • 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.

  • 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 $224Free cancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From San Francisco to Seattle

    Across 15 Alaska Airlines flights from San Francisco to Seattle this week, the average price was $199, with the best Alaska Airlines deals starting from $147 round-trip. 10,000 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

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.

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