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

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

How often are flights from San Francisco to Seattle delayed?

About 18% of weekly flights between San Francisco and Seattle have experienced delays in the past year, with the average delay time being 134 minutes.

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.

How popular is this San Francisco to Seattle flight route?

Flights from San Francisco to Seattle/Tacoma Intl have been viewed 3 times in the past calendar month.

How long is the flight from San Francisco to Seattle?

Departing from San Francisco to Seattle will take you 2h 13m. Airlines will cover a distance of 1093 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

Weekly flight availability from San Francisco to Seattle

The most flights from SFO to SEA are scheduled on a Friday (87 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (25 on average).

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

What are the cheapest flights from San Francisco to Seattle?

Looking at all options, your cheapest flight can be booked for $263. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for $163 on average, our data indicates $263 when flying from San Francisco to Seattle.

What are the most reliable airlines from San Francisco to Seattle?

No one likes to see their flight delayed. When booking a flight from San Francisco to Seattle consider choosing WestJet(83%), Air China(82%) or SkyWest Airlines(76%), as they are the most reliable in getting you off to your destination on time.

Can I find deals for flights from San Francisco to Seattle that include hotel bookings?

Yes. In addition to deals on San Francisco to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from San Francisco to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Seattle.

Can I find deals for business class flights from San Francisco to Seattle?

Yes. Cheapflights offers flight deals from San Francisco to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$110+ Cheap Flights from San Francisco to Seattle

Cheap flight deals from San Francisco to Seattle

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from San Francisco to Seattle
Explore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Fri 16/1021:07 -

Nonstop2h 19m

Sat 17/1013:22 -

Nonstop2h 15m

Deal found 10/9$191

Thu 1/1006:23 -

Nonstop2h 17m

Thu 1/1017:51 -

Nonstop2h 27m

Deal found 10/9$205

Fri 9/1022:45 -

Nonstop2h 30m

Fri 16/1020:29 -

Nonstop2h 30m

Deal found 10/9$208

Sat 17/1015:31 -

1 stop6h 02m

Tue 20/1020:36 -

Nonstop2h 13m

Deal found 11/9$209

Thu 1/1005:05 -

1 stop6h 40m

Sat 3/1007:50 -

1 stop6h 45m

Deal found 11/9$211

Fri 6/1110:35 -

Nonstop2h 22m

Sun 8/1107:16 -

Nonstop2h 22m

Deal found 8/9$212

Sat 31/1011:00 -

Nonstop2h 16m

Sat 7/1115:58 -

1 stop5h 59m

Deal found 11/9$213

Fri 2/1017:38 -

Nonstop2h 23m

Sat 10/1007:16 -

Nonstop2h 22m

Deal found 9/9$215

Thu 15/1015:15 -

2 stops7h 20m

Sat 17/1014:05 -

1 stop5h 50m

Deal found 10/9$218

Wed 7/1006:07 -

Nonstop2h 13m

Thu 15/1021:36 -

Nonstop2h 16m

Deal found 11/9$219

Sat 31/1006:07 -

Nonstop2h 13m

Sat 31/1011:54 -

Nonstop2h 29m

Deal found 12/9$222

Thu 1/1011:57 -

1 stop10h 42m

Sat 10/1006:39 -

Nonstop2h 10m

Deal found 10/9$223

Find flight deals from San Francisco to Seattle

Round-trip from	$191
One-way from	$110
Popular in	July
Cheapest in	February
Average price	$411
Good one-way deal	$263 or less

United Airlines
16/10-17/10
Nonstop
4h 34m total
San Francisco to Seattle

Search Deals

United Airlines
30/9-31/12
Nonstop
2h 15m total
San Francisco to Seattle

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($62 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a one-way flight from San Francisco to Seattle/Tacoma Intl.

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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Sat 5/12

08:15-10:28

Nonstop2h 13m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$110

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Wed 16/12

09:15-11:30

Nonstop2h 15m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$110

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Thu 29/10

06:10-14:35

2 stops8h 25m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$113

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Sat 3/10

05:00-11:55

1 stop6h 55m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$124

Fastest return journey

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Tue 20/10

17:45-19:56

Nonstop2h 11m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$124

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Thu 12/11

15:00-21:15

1 stop6h 15m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$124

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Thu 28/1

14:00-21:30

1 stop7h 30m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$124

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Tue 6/10

12:15-21:45

2 stops9h 30m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$131

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Fri 6/11

20:58-23:13

Nonstop2h 15m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$134

San FranciscoSeattle

SFO San Francisco - SEA Seattle/Tacoma Intl

SFOSEA

San Francisco

Tue 10/11

17:53-20:13

Nonstop2h 20m

Seattle/Tacoma Intl

Wed 31/12

00:00-00:00

Nonstop0h 00m

$152

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 21 resultsSorted by cheapest first

Best time to book a flight from San Francisco to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from San Francisco with our price prediction graph.

SFO-SEA

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Seattle

Prices

Airlines

Delays

How far ahead should I book a flight from San Francisco to Seattle?

To ensure you get the cheapest price possible for a flight from San Francisco to Seattle, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Francisco to Seattle?

Currently, February is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $294). Flying from San Francisco to Seattle in July is currently the most expensive (average of $482). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to SEA?

It’s typically best to fly out from San Francisco to Seattle in the evening. Doing so could potentially save you 76% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost for a return flight from San Francisco to Seattle?

Airfare is below average for this route at the moment.

San Francisco to Seattle flights typically cost between $275 and $531 in October.
The cheapest return price found within the last 5 days was $191 on United Airlines (16 Oct–17 Oct).

Related info for your journey

How popular is this San Francisco to Seattle flight route?
Flights from San Francisco to Seattle/Tacoma Intl have been viewed 3 times in the past calendar month.
How long is the flight from San Francisco to Seattle?
Departing from San Francisco to Seattle will take you 2h 13m. Airlines will cover a distance of 1093 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most reliable airlines from San Francisco to Seattle?
No one likes to see their flight delayed. When booking a flight from San Francisco to Seattle consider choosing WestJet(83%), Air China(82%) or SkyWest Airlines(76%), as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from San Francisco to Seattle?
Looking at all options, your cheapest flight can be booked for $263. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for $163 on average, our data indicates $263 when flying from San Francisco to Seattle.
Can I find deals for flights from San Francisco to Seattle that include hotel bookings?
Yes. In addition to deals on San Francisco to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Francisco to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Seattle.
Can I find deals for business class flights from San Francisco to Seattle?
Yes. Cheapflights offers flight deals from San Francisco to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Francisco to Seattle?
Currently, February is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $294). Flying from San Francisco to Seattle in July is currently the most expensive (average of $482). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from San Francisco today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Seattle?

Cheapflights helps you find that perfect flight to Seattle from San Francisco by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from San Francisco to Seattle with no change fees?

Certainly. Search results for flights to Seattle from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Not ready to book yet? You can track prices for flights from San Francisco to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from San Francisco to Seattle from $110

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from San Francisco to Seattle

Cheapest flights from San Francisco to SeattleExplore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Explore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from San Francisco to SeattleDiscover carefully curated flight deals from San Francisco to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Discover carefully curated flight deals from San Francisco to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Direct flights from San Francisco to SeattleExplore direct flight options from San Francisco to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 September 2026.

Explore direct flight options from San Francisco to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 September 2026.

Last-minute flights from San Francisco to SeattleDiscover last-minute flight deals from San Francisco to Seattle. Data last updated 13 September 2026 and is based on user searches.

Discover last-minute flight deals from San Francisco to Seattle. Data last updated 13 September 2026 and is based on user searches.

One-way flights from San Francisco to SeattleSearch for one-way flight options from San Francisco to Seattle. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Search for one-way flight options from San Francisco to Seattle. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

Find flight deals from San Francisco to Seattle

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

Best time to book a flight from San Francisco to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from San Francisco with our price prediction graph.

Cheapflights Insights

How far ahead should I book a flight from San Francisco to Seattle?

To ensure you get the cheapest price possible for a flight from San Francisco to Seattle, you should look to book at least 50 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Francisco to Seattle?

What is the cheapest time of day to fly from SFO to SEA?

It’s typically best to fly out from San Francisco to Seattle in the evening. Doing so could potentially save you 76% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost for a return flight from San Francisco to Seattle?

Airfare is below average for this route at the moment.

San Francisco to Seattle flights typically cost between $275 and $531 in October.The cheapest return price found within the last 5 days was $191 on United Airlines (16 Oct–17 Oct).

Weekly flight availability from San Francisco to Seattle

The most flights from SFO to SEA are scheduled on a Friday (87 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (25 on average).

How often are flights from San Francisco to Seattle delayed?

About 18% of weekly flights between San Francisco and Seattle have experienced delays in the past year, with the average delay time being 134 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

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

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 16% of flights being delayed.

Related info for your journey

How popular is this San Francisco to Seattle flight route?

How long is the flight from San Francisco to Seattle?

What are the most reliable airlines from San Francisco to Seattle?

What are the cheapest flights from San Francisco to Seattle?

Can I find deals for flights from San Francisco to Seattle that include hotel bookings?

How can I find direct flights from San Francisco to Seattle?

Can I find deals for business class flights from San Francisco to Seattle?

What is the cheapest month to book a flight from San Francisco to Seattle?

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Why should you use Cheapflights to find cheap flight tickets from San Francisco to Seattle?

Can Cheapflights find flights from San Francisco to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from San Francisco to Seattle become cheaper?

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Cheapest flights from San Francisco to Seattle
Explore the most affordable flight options available from San Francisco to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 September 2026.

Best flights from San Francisco to Seattle
Discover carefully curated flight deals from San Francisco to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 September 2026.

Direct flights from San Francisco to Seattle
Explore direct flight options from San Francisco to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 13 September 2026.

Last-minute flights from San Francisco to Seattle
Discover last-minute flight deals from San Francisco to Seattle. Data last updated 13 September 2026 and is based on user searches.

One-way flights from San Francisco to Seattle
Search for one-way flight options from San Francisco to Seattle. Find affordable one-way fares based on user searches. Data last updated 13 September 2026.

San Francisco to Seattle flights typically cost between $275 and $531 in October.
The cheapest return price found within the last 5 days was $191 on United Airlines (16 Oct–17 Oct).