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Cheap flights from San Francisco to Seattle from C$ 107

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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in January or February, booked 69 days in advance, depart on a Tuesday or Wednesday 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 17 October 2025.

Round-trip from

C$ 192

One-way from

C$ 107

Popular in

December

Cheapest in

January

Average price

C$ 359

Good round-trip deal

C$ 124 or less

Good one-way deal

C$ 238 or less
Alaska Airlines
  • Alaska Airlines
  • 8/11-12/11
  • 1 total stop
  • 5h 58m total
  • San Francisco to Seattle
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Southwest
  • Southwest
  • 11/11
  • 1 total stop
  • 6h 30m total
  • San Francisco to Seattle
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Highest demand for flights based on searches. 2% potential increase in price (C$ 13 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from San Francisco to Seattle/Tacoma Intl.
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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

Enter your travel dates to find the best prices.

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 17 October 2025.

Sat 8/117:37 p.m.SFO - SEA
Nonstop2h 23mAlaska Airlines
Wed 12/115:20 a.m.SEA - SFO
1 stop3h 35mAlaska Airlines
Deal found 16/10C$ 192
Mon 1/1210:18 p.m.SFO - SEA
1 stop17h 05mAlaska Airlines
Sun 7/128:45 a.m.SEA - SFO
Nonstop2h 15mAlaska Airlines
Deal found 15/10C$ 197
Fri 12/127:35 a.m.SFO - SEA
Nonstop2h 17mAlaska Airlines
Mon 15/128:25 a.m.SEA - SFO
1 stop4h 04mAlaska Airlines
Deal found 16/10C$ 199
Fri 7/116:00 a.m.SFO - SEA
Nonstop2h 20mDelta
Mon 10/112:11 p.m.SEA - SFO
1 stop6h 15mDelta
Deal found 15/10C$ 206
Fri 12/123:45 p.m.SFO - SEA
1 stop8h 20mSouthwest
Tue 16/123:05 p.m.SEA - SFO
1 stop6h 10mSouthwest
Deal found 16/10C$ 212
Sun 14/1210:30 a.m.SFO - SEA
Nonstop2h 22mDelta
Sun 21/127:13 a.m.SEA - SFO
Nonstop2h 20mDelta
Deal found 16/10C$ 213
Fri 12/122:59 p.m.SFO - SEA
1 stop3h 56mAlaska Airlines
Sun 14/128:25 a.m.SEA - SFO
1 stop4h 04mAlaska Airlines
Deal found 16/10C$ 219
Thu 18/128:00 a.m.SFO - SEA
Nonstop1h 50mAlaska Airlines
Wed 24/124:00 p.m.SEA - SFO
1 stop5h 36mAlaska Airlines
Deal found 16/10C$ 220
Tue 2/1212:45 p.m.SFO - SEA
2 stops7h 55mSouthwest
Thu 4/129:35 a.m.SEA - SFO
1 stop9h 00mSouthwest
Deal found 16/10C$ 223
Mon 22/1210:45 p.m.SFO - SEA
1 stop10h 09mAlaska Airlines
Thu 1/17:09 a.m.SEA - SFO
Nonstop2h 24mAlaska Airlines
Deal found 15/10C$ 225
Wed 12/113:15 p.m.SFO - SEA
2 stops7h 40mSouthwest
Sat 15/1110:25 a.m.SEA - SFO
2 stops8h 25mSouthwest
Deal found 14/10C$ 226
Sat 8/1112:40 p.m.SFO - SEA
1 stop7h 40mSouthwest
Mon 10/115:50 a.m.SEA - SFO
2 stops8h 00mSouthwest
Deal found 16/10C$ 227

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 17 October 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

Fri 19/12

5:50 a.m.-8:11 a.m.

Nonstop2h 21m

Seattle/Tacoma Intl

Tue 23/12

10:15 p.m.-12:32 a.m.

Nonstop2h 17m

C$ 192

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 16/12

7:35 a.m.-9:52 a.m.

Nonstop2h 17m

Seattle/Tacoma Intl

Mon 22/12

4:00 p.m.-9:36 p.m.

1 stop5h 36m

C$ 192

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 13/11

6:00 a.m.-8:23 a.m.

Nonstop2h 23m

Seattle/Tacoma Intl

Tue 25/11

7:10 a.m.-9:35 a.m.

Nonstop2h 25m

C$ 206

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 28/1

8:15 a.m.-6:35 p.m.

2 stops10h 20m

Seattle/Tacoma Intl

Sun 1/2

8:35 a.m.-2:50 p.m.

1 stop6h 15m

C$ 219

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 8/11

1:11 p.m.-7:10 p.m.

1 stop5h 59m

Seattle/Tacoma Intl

Sun 9/11

8:30 a.m.-4:21 p.m.

1 stop7h 51m

C$ 219

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 17/12

8:00 a.m.-2:39 p.m.

1 stop6h 39m

Seattle/Tacoma Intl

Fri 19/12

9:35 p.m.-11:54 p.m.

Nonstop2h 19m

C$ 220

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 14/11

1:11 p.m.-7:10 p.m.

1 stop5h 59m

Seattle/Tacoma Intl

Fri 21/11

9:24 p.m.-11:36 p.m.

Nonstop2h 12m

C$ 220

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 24/11

9:26 p.m.-11:43 p.m.

Nonstop2h 17m

Seattle/Tacoma Intl

Thu 4/12

8:25 a.m.-12:29 p.m.

1 stop4h 04m

C$ 220

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 13/11

7:00 a.m.-12:44 p.m.

1 stop5h 44m

Seattle/Tacoma Intl

Mon 24/11

9:30 p.m.-11:49 p.m.

Nonstop2h 19m

C$ 220

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 22/12

6:30 p.m.-8:50 p.m.

Nonstop2h 20m

Seattle/Tacoma Intl

Thu 25/12

7:10 a.m.-9:33 a.m.

Nonstop2h 23m

C$ 226

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/10

Showing 1-10 of 24 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 10 October 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 58 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, September is the cheapest month in which you can book a flight from San Francisco to Seattle (average of C$ 149). Flying from San Francisco to Seattle in May is currently the most expensive (average of C$ 192). 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 17 October 2025.

It’s typically best to fly out from San Francisco to Seattle at noon. Doing so could potentially save you 67% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost to fly round-trip from San Francisco to Seattle?

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 17 October 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
11,100 reviews
Check prices

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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
11,100 reviews
Alaska Airlines
8.0
Very good
11,100 reviews
Check prices

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

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 77 flights from San Francisco to Seattle/Tacoma Intl, all of which are around 2h 21m 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 25 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, United Airlines, and Southwest can get you from San Francisco to Seattle in just under 2h 23m. Your travel time can differ by up to 5h 57m. 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$ 156. Alaska Airlines is priced at 54% lower than the current average price of a flight leaving 3 months from now.

  • 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 (94%), Scandinavian Airlines (88%) or Asiana Airlines (87%) 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$ 404, our data indicates the cheapest price to be C$ 96. The most popular route (San Francisco - Seattle/Tacoma Intl), is priced around C$ 220.

  • 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, September is the cheapest month in which you can book a flight from San Francisco to Seattle (average of C$ 149). Flying from San Francisco to Seattle in May is currently the most expensive (average of C$ 192). 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
Mukilteo
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 17 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 156AverageC$ 290FlexibilityNo 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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