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Cheap flights from San Francisco to Seattle from C$ 115

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
26 May — 2 Jun1
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 September, booked 71 days in advance, depart on a Thursday or Friday 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 26 April 2026.

Thu 14/55:55 a.m.
SFO
-
SEA
Nonstop2h 22m
Delta
Sun 17/57:15 a.m.
SEA
-
SFO
Nonstop2h 19m
Delta
Deal found 21/4C$ 187
Tue 1/96:05 a.m.
SFO
-
SEA
Nonstop2h 20m
Delta
Tue 8/99:25 p.m.
SEA
-
SFO
Nonstop2h 21m
Delta
Deal found 22/4C$ 193
Tue 1/96:05 a.m.
SFO
-
SEA
Nonstop2h 20m
Delta
Fri 11/99:50 a.m.
SEA
-
SFO
Nonstop2h 21m
Delta
Deal found 22/4C$ 201
Tue 12/59:00 a.m.
SFO
-
SEA
Nonstop2h 22m
Alaska Airlines
Wed 13/57:00 a.m.
SEA
-
SFO
Nonstop2h 18m
Alaska Airlines
Deal found 22/4C$ 206
Tue 12/512:26 p.m.
SFO
-
SEA
Nonstop2h 16m
Alaska Airlines
Tue 19/511:40 a.m.
SEA
-
SFO
Nonstop2h 24m
Alaska Airlines
Deal found 23/4C$ 209
Sat 6/65:55 p.m.
SFO
-
SEA
1 stop7h 15m
Southwest
Sat 13/66:40 p.m.
SEA
-
SFO
1 stop4h 50m
Southwest
Deal found 21/4C$ 215
Wed 24/65:20 p.m.
SFO
-
SEA
2 stops7h 20m
Southwest
Mon 29/65:35 p.m.
SEA
-
SFO
1 stop6h 55m
Southwest
Deal found 21/4C$ 216
Tue 9/610:50 a.m.
SFO
-
SEA
1 stop6h 00m
Southwest
Tue 18/84:10 p.m.
SEA
-
SFO
1 stop5h 10m
Southwest
Deal found 21/4C$ 217
Tue 9/68:59 p.m.
SFO
-
SEA
Nonstop2h 25m
Delta
Tue 18/89:25 p.m.
SEA
-
SFO
Nonstop2h 21m
Delta
Deal found 21/4C$ 220
Fri 5/66:45 p.m.
SFO
-
SEA
1 stop6h 55m
Southwest
Fri 12/66:05 p.m.
SEA
-
SFO
2 stops6h 25m
Southwest
Deal found 21/4C$ 221
Tue 30/65:20 p.m.
SFO
-
SEA
2 stops7h 20m
Southwest
Thu 2/76:05 p.m.
SEA
-
SFO
2 stops6h 25m
Southwest
Deal found 21/4C$ 223

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 26 April 2026.

Round-trip from

C$ 187

One-way from

C$ 115

Popular in

November

Cheapest in

February

Average price

C$ 379

Good one-way deal

C$ 175 or less
Delta
  • Delta
  • 23/6-2/7
  • Nonstop
  • 4h 37m total
  • San Francisco to Seattle
Search Deals
Southwest
  • Southwest
  • 1/6
  • 1 total stop
  • 8h 35m total
  • San Francisco to Seattle
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 26 April 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

Tue 8/9

10:31 a.m.-12:49 p.m.

Nonstop2h 18m

Seattle/Tacoma Intl

Sun 13/9

9:50 a.m.-12:11 p.m.

Nonstop2h 21m

C$ 272

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 26/5

5:44 p.m.-7:59 p.m.

Nonstop2h 15m

Seattle/Tacoma Intl

Sat 6/6

7:14 a.m.-9:32 a.m.

Nonstop2h 18m

C$ 273

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 6/8

8:45 p.m.-11:10 p.m.

Nonstop2h 25m

Seattle/Tacoma Intl

Sat 15/8

8:38 a.m.-10:57 a.m.

Nonstop2h 19m

C$ 280

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 11/6

1:38 p.m.-3:59 p.m.

Nonstop2h 21m

Seattle/Tacoma Intl

Tue 16/6

7:20 a.m.-9:39 a.m.

Nonstop2h 19m

C$ 283
Quickest round-trip

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 25/7

6:00 a.m.-8:11 a.m.

Nonstop2h 11m

Seattle/Tacoma Intl

Sun 26/7

7:20 a.m.-9:38 a.m.

Nonstop2h 18m

C$ 297

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 26/5

11:25 a.m.-8:20 p.m.

2 stops8h 55m

Seattle/Tacoma Intl

Sat 6/6

6:30 a.m.-1:10 p.m.

1 stop6h 40m

C$ 317

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 30/5

6:00 a.m.-8:17 a.m.

Nonstop2h 17m

Seattle/Tacoma Intl

Sat 30/5

11:40 a.m.-2:04 p.m.

Nonstop2h 24m

C$ 321

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 23/9

2:35 p.m.-9:15 p.m.

1 stop6h 40m

Seattle/Tacoma Intl

Thu 24/9

3:45 p.m.-10:50 p.m.

1 stop7h 05m

C$ 324

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 6/6

5:55 a.m.-8:15 a.m.

Nonstop2h 20m

Seattle/Tacoma Intl

Sun 7/6

7:20 a.m.-9:39 a.m.

Nonstop2h 19m

C$ 338

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 8/9

3:05 p.m.-9:00 p.m.

1 stop5h 55m

Seattle/Tacoma Intl

Sun 13/9

9:25 p.m.-10:10 a.m.

1 stop12h 45m

C$ 346

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/4

Showing 1-10 of 21 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?

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 70 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, February is the cheapest month in which you can book a flight from San Francisco to Seattle (average of C$ 290). Flying from San Francisco to Seattle in November is currently the most expensive (average of C$ 407). 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 26 April 2026.

It’s typically best to fly out from San Francisco to Seattle in the morning. Doing so could potentially save you 45% 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?

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, Alaska Airlines, and Southwest can get you from San Francisco to Seattle in just under 2h 11m. Your travel time can differ by up to 6h 44m. 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 Aeromexico (98%), Copa Airlines (92%) or ITA Airways (91%) 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$ 273, our data indicates the cheapest price to be C$ 121. The most popular route (San Francisco - Seattle/Tacoma Intl), is priced around C$ 674.

  • 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, February is the cheapest month in which you can book a flight from San Francisco to Seattle (average of C$ 290). Flying from San Francisco to Seattle in November is currently the most expensive (average of C$ 407). 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
Kent
Tacoma
Bothell
Cashmere
Olympia
Renton
Marysville
Lynnwood
Kirkland
Tukwila

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

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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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