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Cheap flights from Seattle to San Francisco from £59

SEA — SFO
10 Dec — 17 Dec1
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 September, booked 58 days in advance, depart on a Tuesday or Monday and return on a Sunday

Cheap flight deals from Seattle to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to San Francisco

Wed 2/1217:35 -
Nonstop2h 17m
Fri 4/1218:33 -
Nonstop2h 14m
Deal found 5/11£102
Wed 2/1211:00 -
Nonstop2h 24m
Sat 5/1210:41 -
Nonstop2h 19m
Deal found 4/11£103
Thu 3/1207:15 -
Nonstop2h 31m
Mon 7/1206:00 -
Nonstop2h 18m
Deal found 5/11£104
Wed 16/1207:00 -
Nonstop2h 21m
Thu 17/1218:32 -
Nonstop2h 08m
Deal found 5/11£110
Thu 17/1206:45 -
1 stop4h 45m
Mon 21/1214:20 -
1 stop6h 40m
Deal found 4/11£113
Wed 2/1207:20 -
Nonstop2h 18m
Wed 2/1212:39 -
Nonstop2h 16m
Deal found 7/11£115
Thu 3/1213:35 -
1 stop8h 40m
Mon 7/1205:05 -
1 stop7h 05m
Deal found 4/11£117
Wed 23/1205:00 -
Nonstop2h 20m
Wed 30/1216:17 -
Nonstop2h 12m
Deal found 5/11£119
Wed 2/1208:05 -
2 stops6h 50m
Sat 5/1206:30 -
1 stop5h 50m
Deal found 5/11£121
Wed 2/1208:05 -
2 stops6h 50m
Wed 9/1211:55 -
2 stops9h 45m
Deal found 5/11£125

Find flight deals from Seattle to San Francisco

Round-trip from

£102

One-way from

£59

Popular in

July

Cheapest in

January

Average price

£235

Good one-way deal

£206 or less
United Airlines
  • United Airlines
  • 2/12-4/12
  • Nonstop
  • 4h 31m total
  • Seattle to San Francisco
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Southwest
  • Southwest
  • 10/12-31/12
  • 1 total stop
  • 6h 40m total
  • Seattle to San Francisco
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Highest demand for flights based on searches. 8% potential increase in price (£13 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 November 2026
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Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.
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Cheapflights Fare Finder

 
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 return flight

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Thu 10/12

05:40-12:20

1 stop6h 40m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£59

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Sat 12/12

06:20-15:45

2 stops9h 25m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£63
Fastest return journey

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Thu 3/12

09:01-11:18

Nonstop2h 17m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£71

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Fri 25/12

09:13-11:32

Nonstop2h 19m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£74

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Fri 1/1

07:15-09:46

Nonstop2h 31m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£78

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Fri 1/1

07:00-16:15

1 stop9h 15m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£90

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Sun 20/12

07:15-09:46

Nonstop2h 31m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£92

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Sat 9/1

21:40-23:57

Nonstop2h 17m

San Francisco

Wed 31/12

00:00-00:00

Nonstop0h 00m

£112

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Thu 3/12

13:35-22:15

1 stop8h 40m

San Francisco

Thu 10/12

05:05-12:10

1 stop7h 05m

£117

SeattleSan Francisco

SEA Seattle/Tacoma Intl - SFO San Francisco

SEASFO

Seattle/Tacoma Intl

Sat 16/1

13:45-16:05

Nonstop2h 20m

San Francisco

Wed 20/1

13:00-15:24

Nonstop2h 24m

£119

Flights are sorted by cheapest return flights first.

Deals found on 4/11

Showing 1-10 of 20 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 return price

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?

The best time to book flights from Seattle to San Francisco is 47 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, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of £140). Flying from Seattle to San Francisco in July is currently the most expensive (average of £243). 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?

Unlike in the evening, when flights are generally more expensive, you can save up to 85% on flights from Seattle to San Francisco by exploring options for tickets in the morning.

How much does it cost for a return flight from Seattle to San Francisco?

Airfare is below average for this route at the moment.

Seattle to San Francisco flights typically cost between £160 and £340 in December.
The cheapest return price found within the last 5 days was £102 on United Airlines (2 Dec–4 Dec).

Reviews of airlines servicing San Francisco

See what other customers who have flown with Alaska 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
7.9
Good
13,159 reviews
Check prices

Food

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
13,159 reviews
Alaska Airlines
7.9
Good
13,159 reviews
Check prices

Food

7.0

Crew

8.5

Comfort

7.8

Overall

7.9

Entertainment

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

  • 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 49 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 18m.

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

    Flights from Seattle/Tacoma Intl to San Francisco have been viewed 6 times in the past calendar month.

  • How long is the flight from Seattle to San Francisco?

    Departing from Seattle to San Francisco will take you 2h 12m. The distance between Seattle and San Francisco is about 679 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to San Francisco round-trip?

    According to our current data, Alaska Airlines (£120), offers the cheapest pricing from Seattle to San Francisco. This flight start at 42% 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 Delta, with whom users have recently found tickets for as low as £58. However, be on the lookout for offers from United Airlines and Alaska 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 Horizon Air (100%), WestJet (85%) or Aeromexico (84%) 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 £221 for a flight from Seattle to San Francisco. The cheapest flight overall is £158 while the most popular route, (Seattle/Tacoma Intl - San Francisco) is currently priced at £214.

  • 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, January is the cheapest month in which you can book a flight from Seattle to San Francisco (average of £140). Flying from Seattle to San Francisco in July is currently the most expensive (average of £243). 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
San Bruno
Roseville
Santa Cruz
Newark
Sunnyvale
Bodega Bay

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Seattle to San Francisco

AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest£120Average£254FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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