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Cheap flights from Seattle to San Francisco from C$ 105

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.
SEA — SFO
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in January or September, booked 57 days in advance, depart on a Friday or Saturday and return on a Tuesday

Cheap 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 11 September 2025.

Round-trip from

C$ 190

One-way from

C$ 105

Popular in

August

Cheapest in

January

Average price

C$ 287

Good round-trip deal

C$ 930 or less

Good one-way deal

C$ 240 or less
Alaska Airlines
  • Alaska Airlines
  • 9/11-10/11
  • Nonstop
  • 4h 43m total
  • Seattle to San Francisco
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Southwest
  • Southwest
  • 11/11
  • 1 total stop
  • 6h 15m total
  • Seattle to San Francisco
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Highest demand for flights based on searches. 2% potential increase in price (C$ 10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 9 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 round-trip flight from Seattle/Tacoma Intl to San Francisco.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.
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Find flight deals from Seattle to San Francisco

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 11 September 2025.

Thu 13/119:32 p.m.SEA - SFO
Nonstop2h 18mAlaska Airlines
Sun 16/118:43 p.m.SFO - SEA
Nonstop2h 23mAlaska Airlines
Deal found 11/9C$ 190
Fri 31/1012:35 p.m.SEA - SFO
1 stop8h 50mSouthwest
Tue 4/1112:45 p.m.SFO - SEA
2 stops7h 00mSouthwest
Deal found 9/9C$ 193
Wed 22/105:00 p.m.SEA - SFO
1 stop6h 05mSouthwest
Thu 23/104:10 p.m.SFO - SEA
1 stop8h 40mSouthwest
Deal found 10/9C$ 194
Tue 30/95:31 p.m.SEA - SFO
Nonstop2h 13mUnited Airlines
Thu 2/104:30 p.m.SFO - SEA
Nonstop2h 15mUnited Airlines
Deal found 10/9C$ 195
Tue 30/95:05 p.m.SEA - SFO
Nonstop2h 14mAlaska Airlines
Wed 1/108:00 a.m.SFO - SEA
Nonstop2h 20mAlaska Airlines
Deal found 11/9C$ 197
Mon 17/111:31 p.m.SEA - SFO
Nonstop2h 12mAlaska Airlines
Mon 17/117:37 p.m.SFO - SEA
Nonstop2h 23mAlaska Airlines
Deal found 10/9C$ 200
Tue 30/910:10 a.m.SEA - SFO
2 stops9h 40mSouthwest
Thu 2/104:10 p.m.SFO - SEA
1 stop8h 40mSouthwest
Deal found 9/9C$ 201
Tue 28/106:55 a.m.SEA - SFO
2 stops7h 15mSouthwest
Tue 28/103:50 p.m.SFO - SEA
1 stop7h 10mSouthwest
Deal found 9/9C$ 202
Thu 2/107:20 a.m.SEA - SFO
Nonstop2h 28mDelta
Sun 5/106:00 a.m.SFO - SEA
Nonstop2h 16mDelta
Deal found 11/9C$ 204
Tue 21/105:00 p.m.SEA - SFO
1 stop6h 05mSouthwest
Sat 25/107:15 a.m.SFO - SEA
2 stops8h 00mSouthwest
Deal found 10/9C$ 206
Thu 2/109:40 p.m.SEA - SFO
Nonstop2h 24mAlaska Airlines
Mon 6/108:20 a.m.SFO - SEA
Nonstop2h 14mAlaska Airlines
Deal found 11/9C$ 208
Wed 8/105:50 a.m.SEA - SFO
1 stop9h 10mSouthwest
Wed 15/103:50 p.m.SFO - SEA
1 stop7h 10mSouthwest
Deal found 9/9C$ 209

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 11 September 2025.
Use the filters below to find and compare flights from Seattle to San Francisco that are best for you.

Fly from

Seattle

Fly to

San Francisco

Route

Depart

Return

Price

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 17/11

1:31 p.m.-3:43 p.m.

Nonstop2h 12m

San Francisco

Mon 17/11

7:37 p.m.-10:00 p.m.

Nonstop2h 23m

C$ 200

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 4/10

9:20 p.m.-11:29 p.m.

Nonstop2h 09m

San Francisco

Sun 5/10

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

Nonstop2h 16m

C$ 204

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 22/11

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

Nonstop2h 25m

San Francisco

Sun 23/11

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

Nonstop2h 23m

C$ 204

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 12/1

12:50 p.m.-7:19 p.m.

1 stop6h 29m

San Francisco

Tue 27/1

9:10 a.m.-11:27 a.m.

Nonstop2h 17m

C$ 204

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 28/10

6:15 a.m.-2:10 p.m.

2 stops7h 55m

San Francisco

Sat 1/11

7:00 a.m.-5:30 p.m.

1 stop10h 30m

C$ 218

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 9/10

1:00 p.m.-3:17 p.m.

Nonstop2h 17m

San Francisco

Mon 13/10

9:00 p.m.-11:15 p.m.

Nonstop2h 15m

C$ 218

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 22/10

10:25 a.m.-12:43 p.m.

Nonstop2h 18m

San Francisco

Thu 23/10

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

Nonstop2h 20m

C$ 218

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 30/9

6:05 p.m.-8:20 p.m.

Nonstop2h 15m

San Francisco

Fri 3/10

7:00 a.m.-9:10 a.m.

Nonstop2h 10m

C$ 218

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 30/10

7:25 a.m.-9:55 a.m.

Nonstop2h 30m

San Francisco

Sun 2/11

5:15 a.m.-7:35 a.m.

Nonstop2h 20m

C$ 218

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 30/9

9:20 p.m.-11:29 p.m.

Nonstop2h 09m

San Francisco

Sun 5/10

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

Nonstop2h 16m

C$ 218

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 24 results
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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?

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

Booking 57 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$ 276). Flying from Seattle to San Francisco in December is currently the most expensive (average of C$ 368). 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 11 September 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 64% on flights from Seattle to San Francisco by exploring options for tickets in the evening.

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 7 September 2025.

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 mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 11 September 2025.
See what other customers who have flown with Alaska Airlines,Delta, andHawaiian Airlines 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
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Frontier
5.8
Fair
3,177 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 08m for a nonstop flight. There are 78 flights from Seattle/Tacoma Intl to San Francisco per day from 5 airlines.

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

    This flight path from Seattle/Tacoma Intl to San Francisco was viewed by 369 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 09m. Alaska Airlines provides one of the quickest options available for as low as C$ 204. The distance between Seattle and San Francisco is about 1093 km. All flights are typically direct.

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

    Currently priced at C$ 95, 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. Search Cheapflights for deals from Frontier and Alaska Airlines - these airlines can fly you to your destination from C$ 153 and C$ 161, respectively. Delta is currently priced 70% 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 China Southern (100%), KLM (96%) or SWISS (95%) 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$ 221. On average you can expect to pay C$ 826. The most popular route, (Seattle/Tacoma Intl - San Francisco), can usually be booked for C$ 201.

  • 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$ 276). Flying from Seattle to San Francisco in December is currently the most expensive (average of C$ 368). 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
Richmond
Newark
Alameda
Redwood City
Burlingame
San Bruno
South San Francisco
Scotts Valley
Belmont
Novato
Millbrae
Santa Clara
Vallejo

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Seattle to San Francisco

Discover the top 5 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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 95AverageC$ 210FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 153AverageC$ 314FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Alaska AirlinesCheapestC$ 161AverageC$ 253FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 208AverageC$ 321FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Hawaiian AirlinesCheapestC$ 225AverageC$ 254FlexibilityNo cancel feeOn-time85%
Search Hawaiian 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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