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Cheap flights from San Francisco to Seattle 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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
15 Apr — 22 Apr1
1 adult

Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or January, booked 78 days in advance, depart on a Sunday or Monday 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 10 April 2025.

Round-trip from

£119

One-way from

£61

Popular in

June

Cheapest in

October

Average price

£180

Good one-way deal

£125 or less
Alaska Airlines
  • Alaska Airlines
  • 11/6-18/6
  • Nonstop
  • 4h 28m total
  • San Francisco to Seattle
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Alaska Airlines
  • Alaska Airlines
  • 30/4
  • 1 total stop
  • 5h 21m total
  • San Francisco to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (£18 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£4 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 10 April 2025.

Tue 17/620:45SFO - SEA
Nonstop2h 19mDelta
Fri 27/622:05SEA - SFO
Nonstop2h 15mDelta
Deal found 9/4£119
Wed 4/607:24SFO - SEA
1 stop7h 53mAlaska Airlines
Wed 11/618:59SEA - SFO
1 stop4h 54mAlaska Airlines
Deal found 9/4£122
Thu 8/508:00SFO - SEA
Nonstop2h 12mHawaiian Airlines
Sun 11/508:13SEA - SFO
Nonstop2h 17mHawaiian Airlines
Deal found 9/4£123
Wed 4/612:45SFO - SEA
2 stops9h 45mSouthwest
Tue 10/618:05SEA - SFO
1 stop5h 05mSouthwest
Deal found 9/4£126
Thu 8/522:36SFO - SEA
Nonstop2h 23mUnited Airlines
Thu 15/506:15SEA - SFO
1 stop6h 04mUnited Airlines
Deal found 9/4£130
Fri 9/522:36SFO - SEA
Nonstop2h 23mMultiple Airlines
Sun 11/508:13SEA - SFO
Nonstop2h 17mMultiple Airlines
Deal found 9/4£306

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 858,174 searches. Data last updated 10 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 17/6

06:00-08:04

Nonstop2h 04m

Seattle/Tacoma Intl

Sat 21/6

18:59-21:12

Nonstop2h 13m

£119

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 8/5

08:00-10:12

Nonstop2h 12m

Seattle/Tacoma Intl

Sun 11/5

08:13-10:30

Nonstop2h 17m

£123

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 4/6

12:45-22:30

2 stops9h 45m

Seattle/Tacoma Intl

Tue 10/6

18:05-23:10

1 stop5h 05m

£126

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 8/5

22:36-00:59

Nonstop2h 23m

Seattle/Tacoma Intl

Thu 15/5

06:15-12:19

1 stop6h 04m

£130

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 6/6

06:10-08:30

Nonstop2h 20m

Seattle/Tacoma Intl

Wed 11/6

10:25-12:52

Nonstop2h 27m

£134

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 9/5

22:36-00:59

Nonstop2h 23m

Seattle/Tacoma Intl

Sun 11/5

08:13-10:30

Nonstop2h 17m

£306

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 30/4

16:39-22:00

1 stop5h 21m

£61

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 22/6

05:55-08:14

Nonstop2h 19m

£66

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 25/6

19:45-00:30

1 stop4h 45m

£68

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 23/4

15:33-00:44

1 stop9h 11m

£69

Flights are sorted by cheapest return flights first.

Deals found on 9/4

Showing 1-10 of 14 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 4 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 78 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, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of £622). Flying from San Francisco to Seattle in July is currently the most expensive (average of £946). 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 10 April 2025.

A simple way to save on the total cost of your ticket is to fly from San Francisco to Seattle at midday. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight in the afternoon.

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 10 April 2025.

The most flights from SFO to SEA are scheduled on a Thursday (91 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 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 10 April 2025.
Read through reviews of airlines operating flights from San Francisco to Seattle, such as 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
9,848 reviews
Check prices

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

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
9,848 reviews
Alaska Airlines
8.0
Very Good
9,848 reviews
Check prices

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

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
4,278 reviews
Alaska Airlines
8.0
Very Good
9,848 reviews
Check prices

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

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
7,907 reviews
Alaska Airlines
8.0
Very Good
9,848 reviews
Check prices

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

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
2,362 reviews
Alaska Airlines
8.0
Very Good
9,848 reviews
Check prices

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

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
8,634 reviews
Alaska Airlines
8.0
Very Good
9,848 reviews
Check prices

Boarding

8.2

Comfort

7.9

Overall

8.0

Crew

8.5

Food

7.1

Entertainment

7.1

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?

    If you book a flight from San Francisco to Seattle, you will be flying from San Francisco to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from San Francisco (SFO) take 2h 17m for a nonstop flight. There are 55 flights from San Francisco to Seattle per day from 1 airline.

  • 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?

    Currently priced at £119, Alaska Airlines will fly you from San Francisco to Seattle and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Hawaiian Airlines and Southwest - these airlines can fly you to your destination from £123 and £126, respectively. Alaska Airlines is priced at 37% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapet airlines for a one-way flight from San Francisco to Seattle are Alaska Airlines (£61), Delta (£66), and Southwest (£68).

  • What are the most reliable airlines from San Francisco to Seattle?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Seattle on time: Aeromexico (95%), Air China (91%), Copa Airlines (91%).

  • What are the cheapest flights from San Francisco to Seattle?

    Looking at all options, your cheapest flight can be booked for £52. While the most popular route (San Francisco - Seattle/Tacoma Intl) can be booked for £528 on average our data indicates £147 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, January is the cheapest month in which you can book a flight from San Francisco to Seattle (average of £622). Flying from San Francisco to Seattle in July is currently the most expensive (average of £946). 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
Tacoma
Leavenworth
Bothell

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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.
San Jose to Seattle flights
Los Angeles to Seattle flights
Los Angeles to Portland flights
San Diego to Portland flights
San Diego 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 858,174 searches. Data last updated 10 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest£114Average£184FlexibilityNo 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?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from San Francisco today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Francisco to Seattle for you. Better yet — we are completely free to use.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from San Francisco to Seattle, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from San Francisco to Seattle 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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