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 November 2025, 67 flights take off from San Francisco and land in Seattle each day. The most common flight departure time for this route is 16:00, with 36% of daily flights taking off in the afternoon.

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

As of November 2025, 475 flights take off from San Francisco and land in Seattle each week. The most common flight departure day for this route is Mon, with 19% of weekly flights taking off on this day.

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

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

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 November 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

1 adult

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from San Francisco to Seattle

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 12:39SFO-SEA

6h 39m1 stop

14:05 - 20:24SEA-SFO

6h 19m1 stop

$211Delta

Find Deal

Tue, 2 Dec - Thu, 4 Dec

10:40 - 17:11SFO-SEA

6h 31m1 stop

19:11 - 00:03SEA-SFO

4h 52m1 stop

$213Delta

Find Deal

Thu, 4 Dec - Mon, 8 Dec

06:00 - 08:15SFO-SEA

2h 15mdirect

10:00 - 16:38SEA-SFO

6h 38m1 stop

$217Alaska Airlines

Find Deal

Thu, 5 Mar - Thu, 5 Mar

09:00 - 11:24SFO-SEA

2h 24mdirect

08:25 - 12:29SEA-SFO

4h 04m1 stop

$226Alaska Airlines

Find Deal

Fri, 12 Dec - Mon, 15 Dec

19:37 - 22:00SFO-SEA

2h 23mdirect

07:10 - 09:33SEA-SFO

2h 23mdirect

$228Delta

Find Deal

Sat, 6 Dec - Sun, 7 Dec

06:00 - 08:15SFO-SEA

2h 15mdirect

16:20 - 08:37SEA-SFO

16h 17m1 stop

$231Alaska Airlines

Find Deal

Fri, 20 Feb - Mon, 23 Feb

05:00 - 12:05SFO-SEA

7h 05m1 stop

05:35 - 14:05SEA-SFO

8h 30m1 stop

$233Southwest

Find Deal

Fri, 5 Dec - Fri, 12 Dec

12:45 - 20:40SFO-SEA

7h 55m2 stops

05:35 - 14:05SEA-SFO

8h 30m1 stop

$240Southwest

Find Deal

Thu, 4 Dec - Sun, 7 Dec

14:41 - 16:52SFO-SEA

2h 11mdirect

07:05 - 09:29SEA-SFO

2h 24mdirect

$276United Airlines

Find Deal

Thu, 25 Dec - Thu, 1 Jan

18:55 - 21:07SFO-SEA

2h 12mdirect

12:35 - 14:53SEA-SFO

2h 18mdirect

$288United Airlines

Find Deal

Wed, 24 Dec - Thu, 8 Jan

United Airlines flights from San Francisco to Seattle

Our best United Airlines deals on San Francisco to Seattle flight tickets

United Airlines

25 Dec

SFO14:41San Francisco

2h 11m

SEA16:52Seattle/Tacoma Intl

1 Jan

SEA07:05Seattle/Tacoma Intl

2h 24m

SFO09:29San Francisco

$276

Find similar

United Airlines

24 Dec

SFO18:55San Francisco

2h 12m

SEA21:07Seattle/Tacoma Intl

8 Jan

SEA12:35Seattle/Tacoma Intl

2h 18m

SFO14:53San Francisco

$288

Find similar

United Airlines

20 Dec

SFO22:48San Francisco

2h 11m

SEA00:59Seattle/Tacoma Intl

23 Dec

SEA07:05Seattle/Tacoma Intl

2h 24m

SFO09:29San Francisco

$300

Find similar

Delta flights from San Francisco to Seattle

Our best Delta deals on San Francisco to Seattle flight tickets

Delta

2 Dec

SFO06:00San Francisco

6h 39m

1 stop

SEA12:39Seattle/Tacoma Intl

4 Dec

SEA14:05Seattle/Tacoma Intl

6h 19m

1 stop

SFO20:24San Francisco

$211

Find similar

Delta

4 Dec

SFO10:40San Francisco

6h 31m

1 stop

SEA17:11Seattle/Tacoma Intl

8 Dec

SEA19:11Seattle/Tacoma Intl

4h 52m

1 stop

SFO00:03San Francisco

$213

Find similar

Delta

6 Dec

SFO19:37San Francisco

2h 23m

SEA22:00Seattle/Tacoma Intl

7 Dec

SEA07:10Seattle/Tacoma Intl

2h 23m

SFO09:33San Francisco

$228

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 2/12

06:00-12:39

1 stop6h 39m

Seattle/Tacoma Intl

Thu 4/12

14:05-20:24

1 stop6h 19m

$211

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 4/12

10:40-17:11

1 stop6h 31m

Seattle/Tacoma Intl

Mon 8/12

19:11-00:03

1 stop4h 52m

$213

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 5/3

06:00-08:15

Nonstop2h 15m

Seattle/Tacoma Intl

Thu 5/3

10:00-16:38

1 stop6h 38m

$217

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 12/12

09:00-11:24

Nonstop2h 24m

Seattle/Tacoma Intl

Mon 15/12

08:25-12:29

1 stop4h 04m

$226

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 6/12

19:37-22:00

Nonstop2h 23m

Seattle/Tacoma Intl

Sun 7/12

07:10-09:33

Nonstop2h 23m

$228

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 20/2

06:00-08:15

Nonstop2h 15m

Seattle/Tacoma Intl

Mon 23/2

16:20-08:37

1 stop16h 17m

$231

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 5/12

05:00-12:05

1 stop7h 05m

Seattle/Tacoma Intl

Fri 12/12

05:35-14:05

1 stop8h 30m

$233

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 4/12

12:45-20:40

2 stops7h 55m

Seattle/Tacoma Intl

Sun 7/12

05:35-14:05

1 stop8h 30m

$240

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 25/12

14:41-16:52

Nonstop2h 11m

Seattle/Tacoma Intl

Thu 1/1

07:05-09:29

Nonstop2h 24m

$276

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 24/12

18:55-21:07

Nonstop2h 12m

Seattle/Tacoma Intl

Thu 8/1

12:35-14:53

Nonstop2h 18m

$288

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 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 $308. 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 $319.

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 $226. 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 $754.

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 $294. 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 $754.

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 $378 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 $234 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 November 2025, prices for San Francisco to Seattle flights are approximately 18% cheaper 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	1h 59m
Direct flights	Every day
Airports in Seattle	1 airport

The fastest flight from San Francisco to Seattle takes 1h 59m

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 1h 50m.
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 November 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 737-800 Passenger/BBJ2 (winglets), making up 15.35% of the total bookings. Other popular models include Boeing 737-900 Passenger/BBJ3 (winglets) with 14.62%, Boeing 737 MAX 9 with 11.12%, and Boeing 737 MAX 8 with 9.41%.
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 $163	Free cancellation	Rating 8.0 11,242 reviews		Search Alaska Airlines flights

Alaska Airlines Flights From San Francisco to Seattle
Across 9 Alaska Airlines flights from San Francisco to Seattle this week, the average price was $268, with the best Alaska Airlines deals starting from $163 round-trip. 11,242 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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Fri 5/12

Fri 12/12

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing Washington

Spokane Airport

Popular Cities in the United States

Look for other cheap flights to Los Angelesfrom $867

Look for other cheap flights to New Yorkfrom $1,138

Look for other cheap flights to San Franciscofrom $901

Look for other cheap flights to Honolulufrom $822

Look for other cheap flights to Las Vegasfrom $1,063

Look for other cheap flights to Miamifrom $1,246

Look for other cheap flights to Orlandofrom $1,334

Look for other cheap flights to Chicagofrom $1,232

Look for other cheap flights to Dallasfrom $1,358

Look for other cheap flights to Washington, D.C.from $1,197

Look for other cheap flights to Bostonfrom $1,432

Look for other cheap flights to Atlantafrom $1,231

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 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from San Francisco to Seattle

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

United Airlines flights from San Francisco to Seattle

Our best United Airlines deals on San Francisco to Seattle flight tickets

Delta flights from San Francisco to Seattle

Our best Delta deals on San Francisco to Seattle flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from San Francisco to Seattle that are best for you.

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?

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 November 2025, prices for San Francisco to Seattle flights are approximately 18% cheaper 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, United Airlines, and Alaska 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 November 2025, 67 flights take off from San Francisco and land in Seattle each day. The most common flight departure time for this route is 16:00, with 36% of daily flights taking off in the afternoon.

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

As of November 2025, 475 flights take off from San Francisco and land in Seattle each week. The most common flight departure day for this route is Mon, with 19% 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