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Cheap flights from San Francisco to Seattle from $124

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or January, booked 86 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 25 March 2025.

Round-trip from

$250

One-way from

$124

Popular in

June

Cheapest in

October

Average price

$393

Good one-way deal

$130 or less
Delta
  • Delta
  • 24/4-28/4
  • Nonstop
  • 4h 44m total
  • San Francisco to Seattle
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Alaska Airlines
  • Alaska Airlines
  • 22/4
  • 1 total stop
  • 7h 13m total
  • San Francisco to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($75 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 March 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 25 March 2025.

Thu 24/409:10SFO - SEA
Nonstop2h 28mDelta
Mon 28/420:40SEA - SFO
Nonstop2h 16mDelta
Deal found 24/3$250
Tue 15/407:00SFO - SEA
1 stop5h 18mAlaska Airlines
Thu 17/408:31SEA - SFO
1 stop7h 13mAlaska Airlines
Deal found 24/3$264
Wed 23/411:55SFO - SEA
Nonstop2h 23mUnited Airlines
Sat 9/807:00SEA - SFO
Nonstop2h 20mUnited Airlines
Deal found 24/3$275
Wed 23/405:40SFO - SEA
1 stop5h 45mSouthwest
Sat 9/807:35SEA - SFO
2 stops12h 15mSouthwest
Deal found 24/3$291
Tue 13/515:00SFO - SEA
1 stop7h 00mHawaiian Airlines
Tue 27/506:30SEA - SFO
1 stop6h 09mHawaiian Airlines
Deal found 24/3$320
Tue 13/515:34SFO - SEA
1 stop9h 10mFrontier
Sun 25/513:50SEA - SFO
1 stop9h 21mFrontier
Deal found 24/3$394
Tue 13/516:49SFO - SEA
Nonstop2h 10mAmerican Airlines
Mon 26/506:14SEA - SFO
1 stop6h 18mAmerican Airlines
Deal found 24/3$574

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 25 March 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

Thu 24/4

09:10-11:38

Nonstop2h 28m

Seattle/Tacoma Intl

Mon 28/4

20:40-22:56

Nonstop2h 16m

$250

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 15/4

07:00-12:18

1 stop5h 18m

Seattle/Tacoma Intl

Thu 17/4

08:31-15:44

1 stop7h 13m

$264

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 23/4

11:55-14:18

Nonstop2h 23m

Seattle/Tacoma Intl

Sat 9/8

07:00-09:20

Nonstop2h 20m

$275

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 23/4

05:40-11:25

1 stop5h 45m

Seattle/Tacoma Intl

Sat 9/8

07:35-19:50

2 stops12h 15m

$291

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 13/5

15:00-22:00

1 stop7h 00m

Seattle/Tacoma Intl

Tue 27/5

06:30-12:39

1 stop6h 09m

$320

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 13/5

15:34-00:44

1 stop9h 10m

Seattle/Tacoma Intl

Sun 25/5

13:50-23:11

1 stop9h 21m

$394

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 13/5

16:49-18:59

Nonstop2h 10m

Seattle/Tacoma Intl

Mon 26/5

06:14-12:32

1 stop6h 18m

$574

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 22/4

13:22-20:35

1 stop7h 13m

$124

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 22/4

12:45-22:30

2 stops9h 45m

$134

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 19/4

12:15-18:53

1 stop6h 38m

$140

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 13 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 21 March 2025.

To ensure you get the cheapest price possible for a flight from San Francisco to Seattle, you should look to book at least 86 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 $1,486). 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 25 March 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 25 March 2025.

The most flights from SFO to SEA are scheduled on a Monday (91 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (48 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 25 March 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
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

7.9

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
9,785 reviews
Alaska Airlines
8.0
Very Good
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

7.9

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
4,272 reviews
Alaska Airlines
8.0
Very Good
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

7.9

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
7,890 reviews
Alaska Airlines
8.0
Very Good
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

7.9

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
2,330 reviews
Alaska Airlines
8.0
Very Good
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

7.9

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
8,605 reviews
Alaska Airlines
8.0
Very Good
9,785 reviews
Check prices

Entertainment

7.1

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.1

Comfort

7.9

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 68 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 08m.

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

    Flights from San Francisco to Seattle/Tacoma Intl have been viewed 20 times in the past calendar month.

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

    Flying on Delta is currently your cheapest option to Seattle, with prices starting at $250. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and United Airlines, with the lowest prices starting at $264 and $275, respectively. Delta is 35% 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 $124. Users have also found prices from $134 and $140 on Southwest 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 Horizon Air(100%), Aeromexico(97%) or Copa Airlines(92%), 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 $118. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for $210 on average our data indicates $215 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 $1,486). 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
Leavenworth

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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 Seattle flights
San Francisco to Portland flights
Los Angeles 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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$216Average$317FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

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

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Why should you use Cheapflights to find cheap flight tickets from San Francisco to Seattle?

Cheapflights helps you find that perfect flight to Seattle from San Francisco 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 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.

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

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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