What is the cheapest airline that flies from San Francisco to Seattle/Tacoma Intl?

Southwest, Alaska Airlines, and United Airlines are the most popular carriers operating from San Francisco to Seattle/Tacoma Intl

How many flights depart from San Francisco to Seattle on average per week?

As of October 2025, 563 flights take off from San Francisco and land in Seattle each week. The most common flight departure day for this route is Wed, with 18% of weekly flights taking off on this day.

What is the most punctual flight time for San Francisco to Seattle flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

How often are flights from San Francisco to Seattle delayed?

Historically, on average around 15% of flights between San Francisco and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

How many flights depart from San Francisco to Seattle on average per day?

As of October 2025, 80 flights take off from San Francisco and land in Seattle each day. The most common flight departure time for this route is 19:00, with 40% of daily flights taking off in the afternoon.

Which airline has the best punctuality record on San Francisco to Seattle flights?

According to our data, Aeromexico have had the fewest delays on this route over the last 12 months, with about 2% of their flights experiencing any sort of delay.

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?

There is 1 operator available for flights from San Francisco Airport to Seattle/Tacoma Intl Airport as of October 2025.

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.

$117 Cheap Flights from San Francisco to Seattle in 2025/26

Q: What is the typical price of a round-trip flight between San Francisco and Seattle?

Prices are currently low for flights on this route. Typical prices usually range from $256 to $568. The lowest price recently found on this route was $210.

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06:00 - 08:23SFO-SEA

2h 23mdirect

07:10 - 09:35SEA-SFO

2h 25mdirect

$210Delta

Find Deal

Thu, 20 Nov - Tue, 25 Nov

22:18 - 15:23SFO-SEA

17h 05m1 stop

08:45 - 11:00SEA-SFO

2h 15mdirect

$215Alaska Airlines

Find Deal

Mon, 1 Dec - Sun, 7 Dec

06:00 - 08:20SFO-SEA

2h 20mdirect

14:11 - 20:26SEA-SFO

6h 15m1 stop

$226Delta

Find Deal

Fri, 7 Nov - Mon, 10 Nov

18:30 - 20:50SFO-SEA

2h 20mdirect

07:10 - 09:33SEA-SFO

2h 23mdirect

$229Delta

Find Deal

Mon, 22 Dec - Thu, 25 Dec

15:45 - 00:05SFO-SEA

8h 20m1 stop

05:35 - 14:05SEA-SFO

8h 30m1 stop

$232Southwest

Find Deal

Fri, 12 Dec - Sun, 14 Dec

15:45 - 00:05SFO-SEA

8h 20m1 stop

10:50 - 18:35SEA-SFO

7h 45m2 stops

$240Southwest

Find Deal

Fri, 12 Dec - Mon, 15 Dec

07:00 - 09:17SFO-SEA

2h 17mdirect

16:00 - 21:36SEA-SFO

5h 36m1 stop

$241Alaska Airlines

Find Deal

Thu, 18 Dec - Tue, 23 Dec

15:35 - 20:56SFO-SEA

5h 21m1 stop

17:30 - 19:46SEA-SFO

2h 16mdirect

$244Delta

Find Deal

Tue, 18 Nov - Thu, 27 Nov

06:00 - 08:23SFO-SEA

2h 23mdirect

07:05 - 09:29SEA-SFO

2h 24mdirect

$256United Airlines

Find Deal

Sun, 21 Dec - Wed, 31 Dec

06:00 - 08:23SFO-SEA

2h 23mdirect

15:37 - 17:50SEA-SFO

2h 13mdirect

$258United Airlines

Find Deal

Sat, 8 Nov - Mon, 10 Nov

Southwest flights from San Francisco to Seattle

Our best Southwest deals on San Francisco to Seattle flight tickets

Southwest

12 Dec

SFO15:45San Francisco

8h 20m

1 stop

SEA00:05Seattle/Tacoma Intl

14 Dec

SEA05:35Seattle/Tacoma Intl

8h 30m

1 stop

SFO14:05San Francisco

$232

Find similar

Southwest

12 Dec

SFO15:45San Francisco

8h 20m

1 stop

SEA00:05Seattle/Tacoma Intl

15 Dec

SEA10:50Seattle/Tacoma Intl

7h 45m

2 stops

SFO18:35San Francisco

$240

Find similar

Southwest

12 Nov

SFO15:15San Francisco

7h 40m

2 stops

SEA22:55Seattle/Tacoma Intl

15 Nov

SEA10:25Seattle/Tacoma Intl

8h 25m

2 stops

SFO18:50San Francisco

$247

Find similar

Delta flights from San Francisco to Seattle

Our best Delta deals on San Francisco to Seattle flight tickets

Delta

20 Nov

SFO06:00San Francisco

2h 23m

SEA08:23Seattle/Tacoma Intl

25 Nov

SEA07:10Seattle/Tacoma Intl

2h 25m

SFO09:35San Francisco

$210

Find similar

Delta

7 Nov

SFO06:00San Francisco

2h 20m

SEA08:20Seattle/Tacoma Intl

10 Nov

SEA12:40Seattle/Tacoma Intl

7h 46m

1 stop

SFO20:26San Francisco

$226

Find similar

Delta

22 Dec

SFO18:30San Francisco

2h 20m

SEA20:50Seattle/Tacoma Intl

23 Dec

SEA22:15Seattle/Tacoma Intl

2h 17m

SFO00:32San Francisco

$229

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 20/11

06:00-08:23

Nonstop2h 23m

Seattle/Tacoma Intl

Tue 25/11

07:10-09:35

Nonstop2h 25m

$210

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 1/12

22:18-15:23

1 stop17h 05m

Seattle/Tacoma Intl

Sun 7/12

08:45-11:00

Nonstop2h 15m

$215

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 7/11

06:00-08:20

Nonstop2h 20m

Seattle/Tacoma Intl

Mon 10/11

14:11-20:26

1 stop6h 15m

$226

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 22/12

18:30-20:50

Nonstop2h 20m

Seattle/Tacoma Intl

Thu 25/12

07:10-09:33

Nonstop2h 23m

$229

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 12/12

15:45-00:05

1 stop8h 20m

Seattle/Tacoma Intl

Sun 14/12

05:35-14:05

1 stop8h 30m

$232

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 12/12

15:45-00:05

1 stop8h 20m

Seattle/Tacoma Intl

Mon 15/12

10:50-18:35

2 stops7h 45m

$240

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 18/12

07:00-09:17

Nonstop2h 17m

Seattle/Tacoma Intl

Tue 23/12

16:00-21:36

1 stop5h 36m

$241

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 18/11

15:35-20:56

1 stop5h 21m

Seattle/Tacoma Intl

Thu 27/11

17:30-19:46

Nonstop2h 16m

$244

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 21/12

06:00-08:23

Nonstop2h 23m

Seattle/Tacoma Intl

Wed 31/12

07:05-09:29

Nonstop2h 24m

$256

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 8/11

06:00-08:23

Nonstop2h 23m

Seattle/Tacoma Intl

Mon 10/11

15:37-17:50

Nonstop2h 13m

$258

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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

Prices

Airlines

Delays

Other information

What is the typical price of a round-trip flight between San Francisco and Seattle?

What is the cheapest month to fly to Seattle?

The month of January is, on average, the cheapest month to fly to Seattle from San Francisco, with most prices found around $315. If you are unable to visit Seattle during the month of January, then departing from San Francisco during the month February is also very affordable. Most momondo users find prices during this month for around $332.

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 Sunday. Travellers who choose to depart for Seattle on a Sunday will often find tickets for as low as $294. 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 $752.

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 $293. 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 $691.

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 $375 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 $233 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 October 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

Fastest flight time	2h 11m
Direct flights	Every day
Airports in Seattle	1 airport

The fastest flight from San Francisco to Seattle takes 2h 11m

Direct flights go from San Francisco to Seattle every day.

There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

Search flight deals

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 15m.
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?
There is 1 operator available for flights from San Francisco Airport to Seattle/Tacoma Intl Airport as of October 2025.
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?
Based on momondo bookings for flights between San Francisco and Seattle, the leading plane model is Boeing 737-900 Passenger/BBJ3 (winglets), making up 16.51% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 16.36%, Boeing 737 MAX 9 with 12.84%, and Boeing 737 MAX 8 with 8.11%.
What is the most popular airline from San Francisco to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from San Francisco to Seattle is Alaska Airlines (100% of total bookings).

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 Airlines	PriceFrom $225	Free cancellation	Rating 8.0 11,094 reviews		Search Alaska Airlines flights

Alaska Airlines Flights From San Francisco to Seattle
Across 13 Alaska Airlines flights from San Francisco to Seattle this week, the average price was $189, with the best Alaska Airlines deals starting from $147 round-trip. 11,094 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

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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Cheap flights from San Francisco to Seattle from $117

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 25/1. 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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Big names, great deals

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Southwest flights from San Francisco to Seattle

Our best Southwest deals on San Francisco to Seattle flight tickets

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Our best Delta deals on San Francisco to Seattle flight tickets

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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 typical price of a round-trip flight between San Francisco and Seattle?

What is the cheapest month to fly to Seattle?

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

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

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?

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 October 2025, prices for San Francisco to Seattle flights are approximately 2% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from San Francisco to Seattle/Tacoma Intl?

Southwest, Alaska Airlines, and United Airlines are the most popular carriers operating from San Francisco to Seattle/Tacoma Intl

How often are flights from San Francisco to Seattle delayed?

Historically, on average around 15% of flights between San Francisco and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 130 minutes.

What is the most punctual flight time for San Francisco to Seattle flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on San Francisco to Seattle flights?

According to our data, Aeromexico have had the fewest delays on this route over the last 12 months, with about 2% of their flights experiencing any sort of delay.

How many flights depart from San Francisco to Seattle on average per day?

As of October 2025, 80 flights take off from San Francisco and land in Seattle each day. The most common flight departure time for this route is 19:00, with 40% of daily flights taking off in the afternoon.

How many flights depart from San Francisco to Seattle on average per week?

As of October 2025, 563 flights take off from San Francisco and land in Seattle each week. The most common flight departure day for this route is Wed, with 18% of weekly flights taking off on this day.

When to book flights from San Francisco to Seattle

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

Fastest flight time

Direct flights

Airports in Seattle

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

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

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?

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

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

Alaska Airlines Flights From San Francisco to Seattle

Travelling to a place near Seattle?

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your Seattle trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Washington