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Cheap flights from Seattle to San Francisco from £61

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 25/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in January or September, booked 85 days in advance, depart on a Tuesday or Thursday and return on a Sunday

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 25 March 2025.

Round-trip from

£121

One-way from

£61

Popular in

June

Cheapest in

January

Average price

£187

Good round-trip deal

£183 or less

Good one-way deal

£64 or less
Alaska Airlines
  • Alaska Airlines
  • 4/6-10/6
  • 2 total stops
  • 15h 14m total
  • Seattle to San Francisco
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Alaska Airlines
  • Alaska Airlines
  • 25/4
  • Nonstop
  • 2h 16m total
  • Seattle to San Francisco
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Highest demand for flights based on searches. 6% potential increase in price (£9 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease (£3 potential savings vs. average return price).
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Average for round-trip flights in March 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 25 March 2025.

Wed 4/616:16SEA - SFO
1 stop7h 37mAlaska Airlines
Tue 10/606:00SFO - SEA
1 stop7h 37mAlaska Airlines
Deal found 24/3£121
Fri 25/421:28SEA - SFO
Nonstop2h 16mHawaiian Airlines
Sun 27/407:00SFO - SEA
Nonstop2h 06mHawaiian Airlines
Deal found 25/3£121
Sat 19/412:00SEA - SFO
2 stops8h 10mSouthwest
Tue 22/405:40SFO - SEA
1 stop5h 45mSouthwest
Deal found 24/3£125
Fri 20/621:55SEA - SFO
Nonstop2h 16mDelta
Sat 21/620:45SFO - SEA
Nonstop2h 19mDelta
Deal found 24/3£129
Thu 17/406:15SEA - SFO
1 stop6h 02mUnited Airlines
Mon 21/422:35SFO - SEA
Nonstop2h 23mUnited Airlines
Deal found 24/3£133
Thu 3/412:46SEA - SFO
1 stop21h 21mFrontier
Sun 6/419:47SFO - SEA
1 stop16h 09mFrontier
Deal found 25/3£203

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 25 March 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

Wed 4/6

16:16-23:53

1 stop7h 37m

San Francisco

Tue 10/6

06:00-13:37

1 stop7h 37m

£121

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 25/4

21:28-23:44

Nonstop2h 16m

San Francisco

Sun 27/4

07:00-09:06

Nonstop2h 06m

£121

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 19/4

12:00-20:10

2 stops8h 10m

San Francisco

Tue 22/4

05:40-11:25

1 stop5h 45m

£125

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 20/6

21:55-00:11

Nonstop2h 16m

San Francisco

Sat 21/6

20:45-23:04

Nonstop2h 19m

£129

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 17/4

06:15-12:17

1 stop6h 02m

San Francisco

Mon 21/4

22:35-00:58

Nonstop2h 23m

£133

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 25/4

21:28-23:44

Nonstop2h 16m

£61

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sun 29/6

06:15-08:32

Nonstop2h 17m

£65

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 21/4

13:57-19:26

1 stop5h 29m

£68

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 25/4

17:10-23:00

1 stop5h 50m

£69

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 11/6

18:05-23:10

1 stop5h 05m

£71

Flights are sorted by cheapest return flights first.

Deals found on 24/3

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 return 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 return flight from Seattle to San Francisco. Price data was last updated on 21 March 2025.

The best time to book flights from Seattle to San Francisco is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from Seattle to San Francisco (average of £538). Flying from Seattle to San Francisco in July is currently the most expensive (average of £803). 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 25 March 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 74% on flights from Seattle to San Francisco by exploring options for tickets in the morning.

Weekly flight availability from Seattle to San Francisco

Explore weekly flight availability from Seattle to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 25 March 2025.

The most flights from SEA to SFO are scheduled on a Tuesday (86 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (18 on average).

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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 25 March 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Seattle to San Francisco by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very Good
4,274 reviews
Check prices

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very Good
4,274 reviews
Southwest
8.1
Very Good
4,274 reviews
Check prices

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very Good
9,789 reviews
Southwest
8.1
Very Good
4,274 reviews
Check prices

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very Good
7,890 reviews
Southwest
8.1
Very Good
4,274 reviews
Check prices

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,330 reviews
Southwest
8.1
Very Good
4,274 reviews
Check prices

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,605 reviews
Southwest
8.1
Very Good
4,274 reviews
Check prices

Comfort

8.1

Overall

8.1

Food

7.1

Crew

8.6

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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?

    You will need to book a flight from Seattle/Tacoma Intl to San Francisco if you want to fly from Seattle to San Francisco. At least 1 airline has flights from Seattle/Tacoma Intl (SEA) to San Francisco (SFO) on a regular basis. There are 53 flights to San Francisco from the Seattle airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SEA to SFO to be around 2h 10m.

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

    Flights from Seattle/Tacoma Intl to San Francisco have been viewed 13 times in the past calendar month.

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

    According to our current data, Alaska Airlines (£121), Delta (£121), and Southwest (£125) offers the cheapest pricing from Seattle to San Francisco. These flights start at 33% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Seattle to San Francisco one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as £61. However, be on the lookout for offers from Delta and Hawaiian Airlines, as they are both options that can get you from Seattle to San Francisco for a low price.

  • 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 Eastern (92%), Copa Airlines (89%) or SWISS (87%) 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?

    On average you can expect to pay £124 for a flight from Seattle to San Francisco. The cheapest flight overall is £62 while the most popular route, (Seattle/Tacoma Intl - San Francisco) is currently priced at £120.

  • 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 holiday 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, February is the cheapest month in which you can book a flight from Seattle to San Francisco (average of £538). Flying from Seattle to San Francisco in July is currently the most expensive (average of £803). 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
Santa Cruz
San Mateo
Los Banos
Vallejo
Newark
South San Francisco
Pacific Grove
Union City

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Seattle to San Francisco

Discover the top airline 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 858,174 searches. Data last updated 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest£86Average£159FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers 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?

Cheapflights makes it easy to find Seattle to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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?

Of course! You can now track prices for flights from Seattle to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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