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Cheap flights from San Francisco to Seattle from C$ 80

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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
9 Apr — 16 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in February or April, booked 90 days in advance, depart on a Wednesday or Tuesday and return on a Friday

Cheap 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 10 March 2026.

Mon 11/58:58 p.m.
SFO
-
SEA
Nonstop2h 31m
United Airlines
Fri 15/55:00 a.m.
SEA
-
SFO
Nonstop2h 23m
United Airlines
Deal found 9/3C$ 160
Sat 4/48:58 p.m.
SFO
-
SEA
Nonstop2h 29m
United Airlines
Wed 8/47:12 a.m.
SEA
-
SFO
Nonstop2h 18m
United Airlines
Deal found 6/3C$ 161
Sat 25/42:00 p.m.
SFO
-
SEA
Nonstop2h 17m
Alaska Airlines
Sat 25/45:58 p.m.
SEA
-
SFO
Nonstop2h 16m
Alaska Airlines
Deal found 9/3C$ 166
Fri 8/54:53 p.m.
SFO
-
SEA
1 stop7h 19m
Delta
Sun 10/57:15 a.m.
SEA
-
SFO
Nonstop2h 19m
Delta
Deal found 10/3C$ 172
Wed 1/48:58 p.m.
SFO
-
SEA
Nonstop2h 29m
United Airlines
Wed 8/47:12 a.m.
SEA
-
SFO
Nonstop2h 18m
United Airlines
Deal found 9/3C$ 176
Wed 15/411:13 a.m.
SFO
-
SEA
Nonstop2h 19m
Alaska Airlines
Mon 20/49:42 p.m.
SEA
-
SFO
Nonstop2h 17m
Alaska Airlines
Deal found 8/3C$ 179
Sat 4/48:58 p.m.
SFO
-
SEA
Nonstop2h 29m
United Airlines
Thu 9/47:12 a.m.
SEA
-
SFO
Nonstop2h 18m
United Airlines
Deal found 6/3C$ 182
Thu 16/412:25 p.m.
SFO
-
SEA
Nonstop2h 21m
United Airlines
Mon 20/48:42 a.m.
SEA
-
SFO
Nonstop2h 19m
United Airlines
Deal found 8/3C$ 185
Tue 7/46:00 a.m.
SFO
-
SEA
Nonstop2h 16m
Delta
Tue 14/45:59 p.m.
SEA
-
SFO
1 stop5h 11m
Delta
Deal found 10/3C$ 186
Tue 19/56:00 a.m.
SFO
-
SEA
Nonstop2h 17m
Alaska Airlines
Tue 26/58:30 p.m.
SEA
-
SFO
Nonstop2h 14m
Alaska Airlines
Deal found 7/3C$ 187
Mon 20/45:59 a.m.
SFO
-
SEA
Nonstop2h 20m
Delta
Mon 27/49:20 p.m.
SEA
-
SFO
Nonstop2h 17m
Delta
Deal found 6/3C$ 193
Mon 13/45:59 a.m.
SFO
-
SEA
Nonstop2h 20m
Delta
Wed 15/44:36 p.m.
SEA
-
SFO
1 stop7h 23m
Delta
Deal found 9/3C$ 199

Find 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 10 March 2026.

Round-trip from

C$ 160

One-way from

C$ 80

Popular in

November

Cheapest in

February

Average price

C$ 369

Good one-way deal

C$ 329 or less
United Airlines
  • United Airlines
  • 11/5-15/5
  • Nonstop
  • 4h 54m total
  • San Francisco to Seattle
Search Deals
United Airlines
  • United Airlines
  • 4/5
  • Nonstop
  • 2h 20m total
  • San Francisco to Seattle
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a one-way flight from San Francisco to Seattle/Tacoma Intl.
Search Deals

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 10 March 2026.
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 round-trip

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 27/4

5:40 p.m.-12:55 a.m.

1 stop7h 15m

Seattle/Tacoma Intl

Wed 29/4

9:20 a.m.-5:30 p.m.

1 stop8h 10m

C$ 205

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 11/5

2:00 p.m.-11:05 p.m.

2 stops9h 05m

Seattle/Tacoma Intl

Fri 15/5

6:15 p.m.-12:10 a.m.

1 stop5h 55m

C$ 212

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 22/4

7:20 a.m.-6:30 p.m.

2 stops11h 10m

Seattle/Tacoma Intl

Wed 29/4

11:35 a.m.-10:05 p.m.

2 stops10h 30m

C$ 218

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 23/4

7:25 a.m.-8:05 p.m.

1 stop12h 40m

Seattle/Tacoma Intl

Thu 30/4

11:40 a.m.-5:50 p.m.

2 stops6h 10m

C$ 220

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 20/5

5:55 a.m.-8:17 a.m.

Nonstop2h 22m

Seattle/Tacoma Intl

Sat 30/5

10:00 a.m.-12:29 p.m.

Nonstop2h 29m

C$ 227
Quickest round-trip

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 2/4

6:00 a.m.-8:16 a.m.

Nonstop2h 16m

Seattle/Tacoma Intl

Tue 7/4

9:45 p.m.-11:57 p.m.

Nonstop2h 12m

C$ 228

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 7/4

6:00 a.m.-12:49 p.m.

1 stop6h 49m

Seattle/Tacoma Intl

Thu 9/4

7:25 a.m.-9:51 a.m.

Nonstop2h 26m

C$ 240

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 1/4

6:00 a.m.-8:16 a.m.

Nonstop2h 16m

Seattle/Tacoma Intl

Thu 2/4

7:25 a.m.-9:51 a.m.

Nonstop2h 26m

C$ 240

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 17/4

8:15 a.m.-10:39 a.m.

Nonstop2h 24m

Seattle/Tacoma Intl

Sun 19/4

7:12 a.m.-9:30 a.m.

Nonstop2h 18m

C$ 273

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 11/7

1:05 p.m.-3:24 p.m.

Nonstop2h 19m

Seattle/Tacoma Intl

Sat 18/7

7:20 a.m.-9:37 a.m.

Nonstop2h 17m

C$ 294

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

Showing 1-10 of 24 resultsSorted by cheapest first
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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 6 March 2026.

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 90 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$ 104). Flying from San Francisco to Seattle in June is currently the most expensive (average of C$ 178). 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 10 March 2026.

It’s typically best to fly out from San Francisco to Seattle in the evening. Doing so could potentially save you 46% on the flight price compared to flying in the afternoon, which is usually more expensive.

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.

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

    This flight path from San Francisco to Seattle/Tacoma Intl was viewed by 13 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 and Southwest can get you from San Francisco to Seattle in just under 2h 22m. Your travel time can differ by up to 5h 33m. San Francisco and Seattle are separated by a distance of 1093 km. This flight may include one or multiple 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 Southwest (100%), American Airlines (90%) or Qantas Airways (90%) 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$ 337, our data indicates the cheapest price to be C$ 283. The most popular route (San Francisco - Seattle/Tacoma Intl), is priced around C$ 607.

  • 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$ 104). Flying from San Francisco to Seattle in June is currently the most expensive (average of C$ 178). 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
SeaTac
Leavenworth
Mukilteo
Tacoma
Kent
Bothell
Cashmere
Tukwila
Olympia
Renton
Marysville
Lynnwood
Kirkland

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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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