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Cheap flights from San Francisco to Seattle from $50

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 1/16. 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 round-trip flights

These are some of the best round-trip flight deals from San Francisco to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from San Francisco to Seattle.

Cheap last minute flights

Planning a quick getaway from San Francisco to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from San Francisco to Seattle

Find recent round-trip train or bus tickets from San Francisco to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
10:29 pm - 8:50 amSFO-SEA
10h 21m1 stop
3:15 pm - 12:09 amSEA-SFO
8h 54m1 stop
$100Frontier
Find Deal
Thu, Jan 30 - Fri, Jan 31
6:05 am - 2:25 pmSFO-SEA
8h 20m1 stop
3:15 pm - 12:09 amSEA-SFO
8h 54m1 stop
$101Frontier
Find Deal
Fri, Jan 24 - Mon, Jan 27
8:06 am - 1:12 pmSFO-SEA
5h 06m1 stop
11:48 am - 6:12 pmSEA-SFO
6h 24m1 stop
$102Frontier
Find Deal
Thu, Mar 6 - Tue, Mar 11
8:20 am - 10:35 amSFO-SEA
2h 15mnonstop
8:03 am - 10:24 amSEA-SFO
2h 21mnonstop
$103Alaska Airlines
Find Deal
Sat, Jan 25 - Sun, Jan 26
6:43 pm - 9:08 amSFO-SEA
14h 25m1 stop
11:30 am - 1:47 pmSEA-SFO
2h 17mnonstop
$106Alaska Airlines
Find Deal
Tue, Jan 7 - Wed, Jan 8
8:40 pm - 11:08 pmSFO-SEA
2h 28mnonstop
8:10 pm - 10:34 pmSEA-SFO
2h 24mnonstop
$127Delta
Find Deal
Sat, Feb 15 - Tue, Mar 18
6:10 am - 8:35 amSFO-SEA
2h 25mnonstop
5:35 pm - 7:50 pmSEA-SFO
2h 15mnonstop
$137Delta
Find Deal
Thu, Jan 16 - Sun, Jan 19
11:26 am - 6:50 pmSFO-SEA
7h 24m1 stop
6:10 am - 12:23 pmSEA-SFO
6h 13m1 stop
$158American Airlines
Find Deal
Fri, Jan 31 - Sat, Feb 1
4:48 pm - 7:08 pmSFO-SEA
2h 20mnonstop
7:00 am - 9:20 amSEA-SFO
2h 20mnonstop
$187United Airlines
Find Deal
Tue, Jan 7 - Sat, Jan 11
11:12 am - 1:32 pmSFO-SEA
2h 20mnonstop
7:00 am - 9:20 amSEA-SFO
2h 20mnonstop
$188United Airlines
Find Deal
Thu, Jan 9 - Sun, Jan 12
6:05 am - 3:35 pmSFO-SEA
9h 30m1 stop
$50Frontier
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Thu, Jan 16
6:05 am - 3:35 pmSFO-SEA
9h 30m1 stop
$53Frontier
Find Deal
Thu, Jan 16
7:00 am - 9:15 amSFO-SEA
2h 15mnonstop
$59Alaska Airlines
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Mon, Jan 20
8:20 am - 10:35 amSFO-SEA
2h 15mnonstop
$68Alaska Airlines
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Tue, Mar 4
1:45 pm - 4:00 pmSFO-SEA
2h 15mnonstop
$69Delta
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Tue, Mar 18
4:00 pm - 10:43 pmSFO-SEA
6h 43m1 stop
$79American Airlines
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Wed, Jan 8
11:26 am - 6:50 pmSFO-SEA
7h 24m1 stop
$80American Airlines
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Fri, Jan 31
3:52 pm - 10:21 pmSFO-SEA
6h 29m1 stop
$91Delta
Find Deal
Sat, Jan 25
10:35 pm - 12:55 amSFO-SEA
2h 20mnonstop
$94United Airlines
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Fri, Feb 14
7:00 pm - 9:20 pmSFO-SEA
2h 20mnonstop
$114United Airlines
Find Deal
Tue, Jan 7
12:19 pm - 5:52 pmSFO-SEA
5h 33m1 stop
11:30 am - 1:47 pmSEA-SFO
2h 17mnonstop
Thu, Dec 19 - Tue, Jan 7
11:59 pm - 3:22 pmSFO-SEA
15h 23m1 stop
8:20 pm - 7:14 amSEA-SFO
10h 54m1 stop
$328Frontier
Find Deal
Sun, Dec 22 - Fri, Jan 3
6:59 pm - 9:17 pmSFO-SEA
2h 18mnonstop
1:23 pm - 3:35 pmSEA-SFO
2h 12mnonstop
$332Alaska Airlines
Find Deal
Sun, Dec 22 - Tue, Jan 7
2:36 pm - 4:53 pmSFO-SEA
2h 17mnonstop
7:00 am - 9:20 amSEA-SFO
2h 20mnonstop
$410Alaska Airlines
Find Deal
Mon, Dec 23 - Thu, Jan 2
2:30 pm - 10:10 pmSFO-SEA
7h 40m2 stops
2:35 pm - 10:15 pmSEA-SFO
7h 40m1 stop
$414Southwest
Find Deal
Thu, Dec 19 - Tue, Jan 7
12:25 pm - 10:20 pmSFO-SEA
9h 55m2 stops
3:25 pm - 10:15 pmSEA-SFO
6h 50m2 stops
$419Southwest
Find Deal
Thu, Dec 19 - Tue, Jan 7
4:45 pm - 7:05 pmSFO-SEA
2h 20mnonstop
12:50 pm - 3:09 pmSEA-SFO
2h 19mnonstop
$456United Airlines
Find Deal
Sun, Dec 22 - Tue, Jan 7
7:25 pm - 9:51 pmSFO-SEA
2h 26mnonstop
7:20 am - 9:45 amSEA-SFO
2h 25mnonstop
$465Delta
Find Deal
Mon, Dec 23 - Fri, Jan 3
6:05 am - 8:25 amSFO-SEA
2h 20mnonstop
7:10 pm - 12:14 amSEA-SFO
5h 04m1 stop
$466Delta
Find Deal
Sun, Dec 22 - Tue, Jan 7
7:05 am - 12:41 pmSFO-SEA
5h 36m1 stop
5:00 am - 7:19 amSEA-SFO
2h 19mnonstop
$476United Airlines
Find Deal
Thu, Dec 19 - Tue, Dec 31
7:00 am - 9:15 amSFO-SEA
2h 15mnonstop
1:23 pm - 3:35 pmSEA-SFO
2h 12mnonstop
$106Alaska Airlines
Find Deal
Fri, Jan 31 - Fri, Feb 7
8:20 am - 10:35 amSFO-SEA
2h 15mnonstop
1:23 pm - 3:35 pmSEA-SFO
2h 12mnonstop
$109Alaska Airlines
Find Deal
Wed, Jan 8 - Mon, Jan 13
7:00 am - 9:15 amSFO-SEA
2h 15mnonstop
8:03 am - 10:24 amSEA-SFO
2h 21mnonstop
$110Alaska Airlines
Find Deal
Sat, Jan 25 - Sun, Jan 26
8:20 am - 10:35 amSFO-SEA
2h 15mnonstop
1:23 pm - 3:35 pmSEA-SFO
2h 12mnonstop
$111Alaska Airlines
Find Deal
Tue, Jan 14 - Tue, Jan 14
7:33 pm - 10:00 pmSFO-SEA
2h 27mnonstop
11:20 am - 1:37 pmSEA-SFO
2h 17mnonstop
$112Alaska Airlines
Find Deal
Sat, Feb 1 - Sat, Feb 8
4:37 pm - 7:00 pmSFO-SEA
2h 23mnonstop
5:35 pm - 7:57 pmSEA-SFO
2h 22mnonstop
$117Delta
Find Deal
Mon, Jan 27 - Mon, Mar 3
6:10 am - 8:35 amSFO-SEA
2h 25mnonstop
5:35 pm - 7:57 pmSEA-SFO
2h 22mnonstop
$119Delta
Find Deal
Mon, Jan 6 - Thu, Jan 9
1:25 pm - 3:45 pmSFO-SEA
2h 20mnonstop
7:00 am - 9:20 amSEA-SFO
2h 20mnonstop
$126United Airlines
Find Deal
Fri, Jan 17 - Sun, Jan 19
11:12 am - 1:32 pmSFO-SEA
2h 20mnonstop
7:00 am - 9:20 amSEA-SFO
2h 20mnonstop
$132United Airlines
Find Deal
Fri, Jan 17 - Mon, Jan 20
5:59 pm - 8:13 pmSFO-SEA
2h 14mnonstop
7:59 pm - 10:09 pmSEA-SFO
2h 10mnonstop
$377American Airlines
Find Deal
Fri, Mar 21 - Sun, Mar 23

Frontier flights from San Francisco to Seattle

Our best Frontier deals on San Francisco to Seattle flight tickets
Frontier
Jan 30
SFO10:29 pmSan Francisco
10h 21m
1 stop
SEA8:50 amSeattle/Tacoma Intl
Jan 31
SEA3:15 pmSeattle/Tacoma Intl
8h 54m
1 stop
SFO12:09 amSan Francisco
Frontier
Jan 24
SFO6:05 amSan Francisco
8h 20m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
Jan 27
SEA3:15 pmSeattle/Tacoma Intl
8h 54m
1 stop
SFO12:09 amSan Francisco
Frontier
Mar 6
SFO8:06 amSan Francisco
5h 06m
1 stop
SEA1:12 pmSeattle/Tacoma Intl
Mar 11
SEA11:48 amSeattle/Tacoma Intl
6h 24m
1 stop
SFO6:12 pmSan Francisco

Alaska Airlines flights from San Francisco to Seattle

Our best Alaska Airlines deals on San Francisco to Seattle flight tickets
Alaska Airlines
Jan 25
SFO8:20 amSan Francisco
2h 15m
SEA10:35 amSeattle/Tacoma Intl
Jan 26
SEA8:03 amSeattle/Tacoma Intl
2h 21m
SFO10:24 amSan Francisco
Alaska Airlines
Jan 7
SFO6:43 pmSan Francisco
14h 25m
1 stop
SEA9:08 amSeattle/Tacoma Intl
Jan 8
SEA11:30 amSeattle/Tacoma Intl
2h 17m
SFO1:47 pmSan Francisco
Alaska Airlines
Jan 8
SFO8:20 amSan Francisco
2h 15m
SEA10:35 amSeattle/Tacoma Intl
Jan 13
SEA1:23 pmSeattle/Tacoma Intl
2h 12m
SFO3:35 pmSan 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?

In general, October is the cheapest month to fly from San Francisco to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $197. If you don’t want to visit Seattle in October, then you should wait until January to fly from San Francisco, when ticket prices are also cheap, with an average price of $198.

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

On average, the least expensive day to fly to Seattle from San Francisco is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $235. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from San Francisco because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $279.

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

Flying to Seattle from San Francisco in the evening is the least expensive time of day to depart. momondo users have found prices as low as $242 when looking at flights departing in the evening. Flights to Seattle are more costly in the afternoon, with an average ticket price of $294. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 22 days ahead of your departure date. In general, you can expect to find flights to Seattle for around $247 when searching 22 days out. Keep in mind that you might be able to find cheaper flights to Seattle at any time. In fact, our users found flights for as low as $185 in the past 72 hours.

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.

Can stopping save me money on San Francisco to Seattle flights?

No. A direct flight is the cheapest option for a flight between San Francisco to Seattle.

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

As of December 2024, prices for San Francisco to Seattle flights are approximately 7% 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 round-trip 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

$50

Fastest flight time

1h 56m

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 $50. The best round-trip flight deal from San Francisco to Seattle found on momondo in the last 72 hours is $100.
The fastest flight from San Francisco to Seattle takes 1h 56m
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?

    We’ve found that taking a flight from San Francisco to Seattle with United Airlines is more time-efficient when based simply on travel duration. A train from San Francisco to Seattle or a bus from San Francisco to Seattle can take you longer than a 1h 56m flight.

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

    Taking a flight to your destination is the cheapest option we’ve found in the past few days. The cheapest price we’ve found for this option is $100, making it less expensive than a train from San Francisco to Seattle and cheaper than a bus from San Francisco to Seattle.

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

    San Francisco and Seattle/Tacoma Intl are 678.2 mi apart from one another. Flights usually cover this in 1h 56m, depending on flying conditions and air traffic around both airports.

  • 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 were last updated today.

  • 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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
Spirit AirlinesPriceFrom $65Free CancellationRating
6.3
8,119 reviews
Search Spirit Airlines flights
DeltaPriceFrom $109Free CancellationRating
8.0
8,604 reviews
Search Delta flights
FrontierPriceFrom $109Free CancellationRating
6.1
3,479 reviews
Search Frontier flights
United AirlinesPriceFrom $136Free CancellationRating
7.4
9,059 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $136Free CancellationRating
8.0
9,552 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $226Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Delta Flights From San Francisco to Seattle

    Delta is one of the most popular airlines flying from San Francisco to Seattle, operating 6 flights/week on average for this route. A good Delta flight deal for San Francisco to Seattle starts from $109 round-trip, up to an average price of $207. Our users have rated Delta at 8.0/10.

  • Alaska Airlines Flights From San Francisco to Seattle

    Alaska Airlines is also a popular choice for this route. Alaska Airlines flight deals for San Francisco to Seattle start from as low as $136 round-trip, depending on your selected dates, with average Alaska Airlines deals seen on momondo around $282. Alaska Airlines operates 8 flights to Seattle from San Francisco in an average week. Users have rated it 8.0/10 across 9,554 reviews.


Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Francisco to Seattle for you.

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

Yes. momondo allows you to filter the results for San Francisco to Seattle flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from San Francisco to Seattle.

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

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from San Francisco and alert you when they change.


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