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Cheap flights from San Francisco to Seattle from $122

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
4 May — 11 May1
1 adult

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

Cheap 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 29 April 2025.

Round-trip from

$236

One-way from

$122

Popular in

July

Cheapest in

October

Average price

$372

Good one-way deal

$169 or less
Alaska Airlines
  • Alaska Airlines
  • 20/5-20/5
  • 1 total stop
  • 7h 14m total
  • San Francisco to Seattle
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Alaska Airlines
  • Alaska Airlines
  • 20/5
  • 1 total stop
  • 7h 39m total
  • San Francisco to Seattle
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($96 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Price to beat on a one-way flight from San Francisco to Seattle/Tacoma Intl.
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Find flight deals from San Francisco to Seattle

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 29 April 2025.

Tue 20/514:39SFO - SEA
1 stop4h 21mAlaska Airlines
Tue 20/521:33SEA - SFO
Nonstop2h 11mAlaska Airlines
Deal found 29/4$236
Sat 14/620:55SFO - SEA
Nonstop2h 20mDelta
Thu 19/622:05SEA - SFO
Nonstop2h 15mDelta
Deal found 29/4$237
Sat 24/516:19SFO - SEA
Nonstop2h 13mUnited Airlines
Tue 27/507:20SEA - SFO
Nonstop2h 22mUnited Airlines
Deal found 28/4$269
Mon 18/805:00SFO - SEA
1 stop5h 25mSouthwest
Tue 19/816:10SEA - SFO
1 stop5h 15mSouthwest
Deal found 28/4$273
Sun 1/606:00SFO - SEA
1 stop5h 24mHawaiian Airlines
Sun 8/607:00SEA - SFO
Nonstop2h 15mHawaiian Airlines
Deal found 28/4$297

Cheapflights Fare Finder

Customise 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 647,157 searches. Data last updated 29 April 2025.
Use the filters below to find and compare flights from San Francisco to Seattle that are best for you.

Fly from

San Francisco

Fly to

Seattle

Route

Depart

Return

Price

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 20/5

07:00-09:09

Nonstop2h 09m

Seattle/Tacoma Intl

Tue 20/5

11:20-16:25

1 stop5h 05m

$236

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 14/6

05:55-08:14

Nonstop2h 19m

Seattle/Tacoma Intl

Wed 18/6

06:05-08:22

Nonstop2h 17m

$237

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 24/5

16:19-18:32

Nonstop2h 13m

Seattle/Tacoma Intl

Tue 27/5

07:20-09:42

Nonstop2h 22m

$269

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 18/8

05:00-10:25

1 stop5h 25m

Seattle/Tacoma Intl

Tue 19/8

16:10-21:25

1 stop5h 15m

$273

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 1/6

06:00-11:24

1 stop5h 24m

Seattle/Tacoma Intl

Sun 8/6

07:00-09:15

Nonstop2h 15m

$297

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 20/5

14:15-21:54

1 stop7h 39m

$122

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 19/5

20:55-23:18

Nonstop2h 23m

$123

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 16/7

07:00-09:05

Nonstop2h 05m

$130

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 13/6

19:15-00:30

1 stop5h 15m

$139

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 6/5

15:34-23:49

1 stop8h 15m

$151

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 11 results
1
2

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 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 San Francisco to Seattle

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

Use this chart to determine the optimal time to book a return flight from San Francisco to Seattle. Price data was last updated on 25 April 2025.

To ensure you get the cheapest price possible for a flight from San Francisco to Seattle, you should look to book at least 85 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, March is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $875). Flying from San Francisco to Seattle in December is currently the most expensive (average of $1,469). 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 29 April 2025.

It’s typically best to fly out from San Francisco to Seattle in the afternoon. Doing so could potentially save you 59% on the flight price compared to flying at midday, which is usually more expensive.

Weekly flight availability from San Francisco to Seattle

Explore weekly flight availability from San Francisco to Seattle. 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 29 April 2025.

The most flights from SFO to SEA are scheduled on a Monday (98 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (38 on average).

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 29 April 2025.
To help decide which airline to fly from San Francisco to Seattle, see what other customers have to say about Alaska Airlines, Southwest and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
9,961 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very Good
9,961 reviews
Alaska Airlines
8.0
Very Good
9,961 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very Good
4,295 reviews
Alaska Airlines
8.0
Very Good
9,961 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very Good
7,929 reviews
Alaska Airlines
8.0
Very Good
9,961 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very Good
9,961 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very Good
9,961 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.1

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • What airports do I use to fly from San Francisco to Seattle?

    You will need to book a flight from San Francisco to Seattle/Tacoma Intl if you want to fly from San Francisco to Seattle. At least 1 airline has flights from San Francisco (SFO) to Seattle/Tacoma Intl (SEA) on a regular basis. There are 61 flights to Seattle from the San Francisco airport per day. If you manage to book one that is nonstop, then you can expect the flight time from SFO to SEA to be around 2h 13m.

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

    Flights from San Francisco to Seattle/Tacoma Intl have been viewed 17 times in the past calendar month.

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

    Flying on Alaska Airlines is currently your cheapest option to Seattle, with prices starting at $236. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $237 and $269, respectively. Alaska Airlines is 37% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $122. Users have also found prices from $123 and $130 on Delta and Hawaiian Airlines, respectively.

  • 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(97%), Delta(93%) or Copa Airlines(90%), 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 at all options, your cheapest flight can be booked for $124. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for $209 on average our data indicates $336 when flying from San Francisco to Seattle.

  • 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 holiday 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, March is the cheapest month in which you can book a flight from San Francisco to Seattle (average of $875). Flying from San Francisco to Seattle in December is currently the most expensive (average of $1,469). 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
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Alternative routes for San Francisco to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Portland flights
Los Angeles to Seattle flights
San Francisco to Portland flights

Top airline flying from San Francisco to Seattle

Discover the top airline that operate flights from San Francisco to Seattle. 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 647,157 searches. Data last updated 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$230Average$311FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

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How does Cheapflights help users find flights from San Francisco to Seattle?

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Can Cheapflights find flights from San Francisco to Seattle with no change fees?

Certainly. Search results for flights to Seattle from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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Not ready to book yet? You can track prices for flights from San Francisco to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.

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