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Cheap flights from San Francisco to Seattle from C$ 96

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or January, booked 79 days in advance, depart on a Tuesday or Friday and return on a Friday

Cheap flight deals from San Francisco to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 September 2025.

Round-trip from

C$ 191

One-way from

C$ 96

Popular in

August

Cheapest in

October

Average price

C$ 302

Good one-way deal

C$ 221 or less
Southwest
  • Southwest
  • 21/10-25/10
  • 2 total stops
  • 14h 00m total
  • San Francisco to Seattle
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Delta
  • Delta
  • 26/11
  • Nonstop
  • 2h 23m total
  • San Francisco to Seattle
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Highest demand for flights based on searches. 9% potential increase in price (C$ 49 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a one-way flight from San Francisco to Seattle/Tacoma Intl.
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Find flight deals from San Francisco to Seattle

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 11 September 2025.

Tue 21/103:50 p.m.SFO - SEA
1 stop7h 10mSouthwest
Sat 25/105:00 a.m.SEA - SFO
1 stop6h 50mSouthwest
Deal found 10/9C$ 191
Wed 29/102:05 p.m.SFO - SEA
2 stops8h 40mSouthwest
Thu 30/109:55 a.m.SEA - SFO
2 stops8h 05mSouthwest
Deal found 10/9C$ 193
Tue 14/103:50 p.m.SFO - SEA
1 stop7h 10mSouthwest
Sat 18/106:35 a.m.SEA - SFO
1 stop10h 10mSouthwest
Deal found 10/9C$ 195
Tue 30/98:58 p.m.SFO - SEA
Nonstop2h 17mDelta
Thu 2/107:20 a.m.SEA - SFO
Nonstop2h 28mDelta
Deal found 10/9C$ 197
Thu 9/104:10 p.m.SFO - SEA
1 stop8h 40mSouthwest
Tue 14/106:55 a.m.SEA - SFO
1 stop10h 10mSouthwest
Deal found 9/9C$ 202
Thu 11/121:27 p.m.SFO - SEA
1 stop3h 31mAlaska Airlines
Sat 13/127:21 p.m.SEA - SFO
Nonstop2h 13mAlaska Airlines
Deal found 11/9C$ 204
Thu 16/108:20 a.m.SFO - SEA
Nonstop2h 14mAlaska Airlines
Mon 20/107:00 a.m.SEA - SFO
Nonstop2h 16mAlaska Airlines
Deal found 11/9C$ 206
Mon 6/108:20 a.m.SFO - SEA
Nonstop2h 14mAlaska Airlines
Tue 7/108:00 a.m.SEA - SFO
Nonstop2h 24mAlaska Airlines
Deal found 11/9C$ 208
Tue 21/102:05 p.m.SFO - SEA
2 stops8h 40mSouthwest
Thu 23/105:00 a.m.SEA - SFO
1 stop12h 35mSouthwest
Deal found 10/9C$ 209
Tue 14/102:05 p.m.SFO - SEA
2 stops8h 40mSouthwest
Tue 21/101:20 p.m.SEA - SFO
2 stops8h 00mSouthwest
Deal found 11/9C$ 211

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 11 September 2025.
Use the filters below to find and compare flights from San Francisco to Seattle that are best for you.

Fly from

San Francisco

Fly to

Seattle

Route

Depart

Return

Price

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 15/10

3:50 p.m.-11:00 p.m.

1 stop7h 10m

Seattle/Tacoma Intl

Sat 18/10

6:35 a.m.-4:45 p.m.

1 stop10h 10m

C$ 195

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 7/11

6:00 a.m.-8:20 a.m.

Nonstop2h 20m

Seattle/Tacoma Intl

Tue 11/11

1:37 p.m.-3:57 p.m.

Nonstop2h 20m

C$ 197

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 6/10

3:10 p.m.-9:02 p.m.

1 stop5h 52m

Seattle/Tacoma Intl

Tue 7/10

8:00 a.m.-10:24 a.m.

Nonstop2h 24m

C$ 204

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 15/10

3:51 p.m.-10:30 p.m.

1 stop6h 39m

Seattle/Tacoma Intl

Sat 18/10

8:15 p.m.-10:29 p.m.

Nonstop2h 14m

C$ 204

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 6/10

10:40 p.m.-12:59 a.m.

Nonstop2h 19m

Seattle/Tacoma Intl

Sun 12/10

7:00 a.m.-9:20 a.m.

Nonstop2h 20m

C$ 215

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 8/10

2:40 p.m.-4:58 p.m.

Nonstop2h 18m

Seattle/Tacoma Intl

Sun 12/10

7:00 a.m.-9:16 a.m.

Nonstop2h 16m

C$ 218

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 17/10

6:00 a.m.-8:20 a.m.

Nonstop2h 20m

Seattle/Tacoma Intl

Sat 18/10

9:25 p.m.-11:33 p.m.

Nonstop2h 08m

C$ 218

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 25/10

9:47 p.m.-12:08 a.m.

Nonstop2h 21m

Seattle/Tacoma Intl

Sun 26/10

8:24 a.m.-10:44 a.m.

Nonstop2h 20m

C$ 218

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 30/9

5:25 p.m.-10:50 p.m.

1 stop5h 25m

Seattle/Tacoma Intl

Sat 4/10

5:00 a.m.-11:50 a.m.

1 stop6h 50m

C$ 219

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 20/10

12:10 p.m.-2:24 p.m.

Nonstop2h 14m

Seattle/Tacoma Intl

Tue 21/10

7:37 p.m.-9:50 p.m.

Nonstop2h 13m

C$ 220

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 21 results
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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.
Estimated round-trip 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

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Seattle. Price data was last updated on 29 August 2025.

The price you pay for your flight from San Francisco to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 40 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of C$ 262). Flying from San Francisco to Seattle in December is currently the most expensive (average of C$ 353). 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?

Find hourly flight availability from San Francisco to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

It’s typically best to fly out from San Francisco to Seattle at noon. Doing so could potentially save you 68% on the flight price compared to flying in the afternoon, which is usually more expensive.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 11 September 2025.
Check out reviews from past customers who have flown with Alaska Airlines from San Francisco to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from San Francisco to Seattle?

    Booking a flight from San Francisco (SFO) to Seattle/Tacoma Intl (SEA) is your only option if you wish to fly from San Francisco to Seattle. On a typical day, there are 71 flights from San Francisco to Seattle/Tacoma Intl, all of which are around 2h 10m for a nonstop flight. You can also purchase a plane ticket from 1 airline when you book a flight from San Francisco to Seattle.

  • How popular is this San Francisco to Seattle flight route?

    This flight path from San Francisco to Seattle/Tacoma Intl was viewed by 24 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from San Francisco to Seattle?

    Delta, Alaska Airlines, and United Airlines can get you from San Francisco to Seattle in just under 2h 19m. Your travel time can differ by up to 3h 33m. San Francisco and Seattle are separated by a distance of 1093 km. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from San Francisco to Seattle round-trip?

    Cheapflights users have booked flights from San Francisco to Seattle round-trip from C$ 154. Alaska Airlines is priced at 53% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from San Francisco to Seattle one-way?

    C$ 96 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on Delta and Alaska Airlines, with prices starting from C$ 96 and C$ 104, respectively.

  • 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 Scandinavian Airlines (92%), KLM (87%) or WestJet (86%) 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 for the cheapest flight from San Francisco to Seattle? While on average our users pay C$ 242, our data indicates the cheapest price to be C$ 149. The most popular route (San Francisco - Seattle/Tacoma Intl), is priced around C$ 509.

  • 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 vacation 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, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of C$ 262). Flying from San Francisco to Seattle in December is currently the most expensive (average of C$ 353). 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.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
SeaTac
Tukwila
Tacoma
Bothell
Cashmere
Renton
Olympia
Marysville
Lynnwood

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from San Francisco to Seattle

Discover the top airline that operate flights from San Francisco to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 154AverageC$ 300FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco to Seattle?

Deals for San Francisco to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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?

Need flexible booking options for your flight to Seattle from San Francisco? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for San Francisco to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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