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Cheap flights from Seattle to San Francisco from C$ 125

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
22 Aug — 29 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in January or October, booked 78 days in advance, depart on a Friday or Wednesday and return on a Monday

Cheap flight deals from Seattle to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to San Francisco
Explore the most affordable flight options available from Seattle to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 July 2026.

Thu 20/88:37 p.m.
SEA
-
SFO
Nonstop2h 15m
Alaska Airlines
Wed 26/86:00 a.m.
SFO
-
SEA
Nonstop2h 08m
Alaska Airlines
Deal found 21/7C$ 235
Sat 15/87:00 a.m.
SEA
-
SFO
Nonstop2h 17m
United Airlines
Tue 18/84:10 p.m.
SFO
-
SEA
Nonstop2h 19m
United Airlines
Deal found 21/7C$ 238
Fri 11/97:24 p.m.
SEA
-
SFO
Nonstop2h 15m
Alaska Airlines
Sun 13/96:00 a.m.
SFO
-
SEA
Nonstop2h 08m
Alaska Airlines
Deal found 22/7C$ 242
Sun 8/117:10 a.m.
SEA
-
SFO
Nonstop2h 26m
Alaska Airlines
Mon 23/1111:25 a.m.
SFO
-
SEA
Nonstop2h 13m
Alaska Airlines
Deal found 22/7C$ 244
Fri 21/89:25 p.m.
SEA
-
SFO
Nonstop2h 15m
Alaska Airlines
Tue 25/86:21 p.m.
SFO
-
SEA
Nonstop2h 11m
Alaska Airlines
Deal found 21/7C$ 249
Sat 5/95:30 a.m.
SEA
-
SFO
1 stop6h 05m
Southwest
Sun 6/910:30 a.m.
SFO
-
SEA
2 stops11h 20m
Southwest
Deal found 21/7C$ 251
Wed 26/89:35 a.m.
SEA
-
SFO
1 stop5h 17m
Alaska Airlines
Wed 2/96:00 a.m.
SFO
-
SEA
Nonstop2h 08m
Alaska Airlines
Deal found 20/7C$ 252
Tue 1/97:40 a.m.
SEA
-
SFO
1 stop8h 19m
Alaska Airlines
Sat 5/96:21 p.m.
SFO
-
SEA
Nonstop2h 11m
Alaska Airlines
Deal found 22/7C$ 254
Sat 15/811:35 a.m.
SEA
-
SFO
2 stops6h 10m
Southwest
Sat 22/811:35 a.m.
SFO
-
SEA
1 stop8h 00m
Southwest
Deal found 21/7C$ 256
Tue 22/912:40 p.m.
SEA
-
SFO
2 stops8h 30m
Southwest
Mon 28/92:50 p.m.
SFO
-
SEA
1 stop9h 35m
Southwest
Deal found 23/7C$ 258
Tue 11/810:29 a.m.
SEA
-
SFO
Nonstop2h 24m
United Airlines
Fri 21/89:07 p.m.
SFO
-
SEA
Nonstop2h 19m
United Airlines
Deal found 21/7C$ 259
Sat 15/87:00 a.m.
SEA
-
SFO
Nonstop2h 17m
United Airlines
Sat 15/81:55 p.m.
SFO
-
SEA
Nonstop2h 19m
United Airlines
Deal found 22/7C$ 261

Find flight deals from Seattle to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to San Francisco (SFO). 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 23 July 2026.

Round-trip from

C$ 235

One-way from

C$ 125

Popular in

June

Cheapest in

January

Average price

C$ 427

Good round-trip deal

C$ 464 or less

Good one-way deal

C$ 140 or less
Alaska Airlines
  • Alaska Airlines
  • 20/8-22/8
  • Nonstop
  • 4h 27m total
  • Seattle to San Francisco
Search Deals
Southwest
  • Southwest
  • 19/8
  • 1 total stop
  • 5h 10m total
  • Seattle to San Francisco
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 72 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 July 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Francisco.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to San Francisco 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 23 July 2026.
Use the filters below to find and compare flights from Seattle to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 21/9

9:40 p.m.-11:55 p.m.

Nonstop2h 15m

San Francisco

Mon 28/9

7:00 a.m.-9:08 a.m.

Nonstop2h 08m

C$ 235

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 10/9

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

1 stop7h 05m

San Francisco

Tue 15/9

10:40 a.m.-5:30 p.m.

1 stop6h 50m

C$ 242

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 22/9

5:55 a.m.-2:05 p.m.

2 stops8h 10m

San Francisco

Sat 26/9

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

2 stops12h 20m

C$ 244

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 27/8

9:30 p.m.-11:50 p.m.

Nonstop2h 20m

San Francisco

Sun 30/8

6:20 a.m.-8:31 a.m.

Nonstop2h 11m

C$ 249

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 26/8

8:35 p.m.-10:50 p.m.

Nonstop2h 15m

San Francisco

Sun 30/8

6:00 a.m.-8:08 a.m.

Nonstop2h 08m

C$ 249

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 20/10

11:54 a.m.-2:23 p.m.

Nonstop2h 29m

San Francisco

Sat 24/10

4:43 p.m.-10:33 p.m.

1 stop5h 50m

C$ 252

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 24/8

7:20 a.m.-9:36 a.m.

Nonstop2h 16m

San Francisco

Tue 1/9

6:20 a.m.-8:31 a.m.

Nonstop2h 11m

C$ 269

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 29/8

8:40 a.m.-10:58 a.m.

Nonstop2h 18m

San Francisco

Tue 1/9

10:32 a.m.-7:52 p.m.

1 stop9h 20m

C$ 275
Cheapest one-way

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 22/9

5:55 a.m.-2:05 p.m.

2 stops8h 10m

C$ 125

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 15/8

11:35 a.m.-5:45 p.m.

2 stops6h 10m

C$ 132

Flights are sorted by cheapest round-trip flights first.

Deals found on 22/7

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Seattle to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Seattle 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 Seattle to San Francisco

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

Booking 90 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of C$ 264). Flying from Seattle to San Francisco in June is currently the most expensive (average of C$ 441). 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 SEA to SFO?

Find hourly flight availability from Seattle to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 July 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 28% on flights from Seattle to San Francisco by exploring options for tickets in the morning.

What is the cheapest day to fly from Seattle to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Seattle to San Francisco. Price data was last updated on 18 July 2026.

Travelers seeking maximum savings on their Seattle to San Francisco flight should consider departing on Friday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated 23 July 2026.
See what other customers who have flown with Alaska Airlines and Delta from Seattle to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,691 reviews
Check prices

Entertainment

7.0

Food

7.1

Overall

7.9

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Kevin,Dec 2022

SEA - SAN

I could not get my devices to work on Alaska wi-fi network.
Alaska Airlines
7.9
Good
12,691 reviews
Alaska Airlines
7.9
Good
12,691 reviews
Check prices

Entertainment

7.0

Food

7.1

Overall

7.9

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Kevin,Dec 2022

SEA - SAN

I could not get my devices to work on Alaska wi-fi network.
Delta
7.8
Good
8,479 reviews
Alaska Airlines
7.9
Good
12,691 reviews
Check prices

Entertainment

7.0

Food

7.1

Overall

7.9

Comfort

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Kevin,Dec 2022

SEA - SAN

I could not get my devices to work on Alaska wi-fi network.

Related info for your journey

Find useful and relevant information for your journey from Seattle to San Francisco. 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 Seattle to San Francisco?

    If you book a flight from Seattle to San Francisco, you will be flying from Seattle/Tacoma Intl to San Francisco. Flights to San Francisco (SFO) from Seattle/Tacoma Intl (SEA) take 2h 12m for a nonstop flight. There are 76 flights from Seattle/Tacoma Intl to San Francisco per day from 2 airlines.

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

    This flight path from Seattle/Tacoma Intl to San Francisco was viewed by 116 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 Seattle to San Francisco?

    A quick flight from Seattle to San Francisco can take about 2h 15m. Alaska Airlines provides one of the quickest options available for as low as C$ 235. The distance between Seattle and San Francisco is about 1093 km. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to San Francisco round-trip?

    Currently priced at C$ 118, Delta will fly you from Seattle to San Francisco and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Alaska Airlines for as low as C$ 165. Delta is currently priced 69% below the average price you’ll pay for this route.

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

    No one likes to see their flight delayed. When booking a flight from Seattle to San Francisco consider choosing Air France (79%), Aeromexico (70%) or SkyWest Airlines (60%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to San Francisco?

    The cheapest flight price from Seattle to San Francisco is C$ 89. On average you can expect to pay C$ 675. The most popular route, (Seattle/Tacoma Intl - San Francisco), can usually be booked for C$ 193.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to San Francisco 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 Seattle to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of C$ 264). Flying from Seattle to San Francisco in June is currently the most expensive (average of C$ 441). 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Clara
Burlingame
San Bruno
Roseville
Livermore
South San Francisco
Novato
Vallejo

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Seattle to San Francisco

Discover the top 2 airlines that operate flights from Seattle to San Francisco. 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 23 July 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 118AverageC$ 165FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 165AverageC$ 319FlexibilityNo 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 Seattle to San Francisco?

Deals for Seattle to San Francisco 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 Seattle to San Francisco?

Cheapflights helps you find that perfect flight to San Francisco from Seattle 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 Seattle to San Francisco with no change fees?

Yes! Cheapflights helps users easily find flights from Seattle to San Francisco with no change fees.

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

Yes! Start tracking prices for Seattle to San Francisco 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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