Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seattle to San Francisco from C$ 121

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 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
2 Aug — 9 Aug1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in September or January, booked 88 days in advance, depart on a Friday or Saturday and return on a Tuesday

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 28 July 2025.

Round-trip from

C$ 193

One-way from

C$ 121

Popular in

July

Cheapest in

September

Average price

C$ 375

Good round-trip deal

C$ 587 or less

Good one-way deal

C$ 286 or less
Alaska Airlines
  • Alaska Airlines
  • 30/9-30/9
  • 1 total stop
  • 8h 54m total
  • Seattle to San Francisco
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 25/8
  • 1 total stop
  • 5h 29m total
  • Seattle to San Francisco
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Francisco.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.
Search Deals

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 28 July 2025.

Wed 27/85:05 p.m.SEA - SFO
Nonstop2h 14mHawaiian Airlines
Mon 1/97:00 a.m.SFO - SEA
Nonstop2h 10mHawaiian Airlines
Deal found 25/7C$ 197
Wed 17/99:20 p.m.SEA - SFO
Nonstop2h 09mDelta
Sun 21/96:00 a.m.SFO - SEA
Nonstop2h 16mDelta
Deal found 27/7C$ 201
Fri 5/95:05 p.m.SEA - SFO
Nonstop2h 14mAlaska Airlines
Fri 5/99:19 p.m.SFO - SEA
Nonstop2h 23mAlaska Airlines
Deal found 27/7C$ 207
Wed 27/81:40 p.m.SEA - SFO
1 stop7h 45mSouthwest
Mon 1/95:00 a.m.SFO - SEA
1 stop5h 25mSouthwest
Deal found 25/7C$ 222

Cheapflights Fare Finder

 
Customize 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 629,999 searches. Data last updated 28 July 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 27/8

5:05 p.m.-7:19 p.m.

Nonstop2h 14m

San Francisco

Mon 1/9

7:00 a.m.-9:10 a.m.

Nonstop2h 10m

C$ 197

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 17/9

9:20 p.m.-11:29 p.m.

Nonstop2h 09m

San Francisco

Sun 21/9

6:00 a.m.-8:16 a.m.

Nonstop2h 16m

C$ 201

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 5/9

5:05 p.m.-7:19 p.m.

Nonstop2h 14m

San Francisco

Fri 5/9

9:19 p.m.-11:42 p.m.

Nonstop2h 23m

C$ 207

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 27/8

1:40 p.m.-9:25 p.m.

1 stop7h 45m

San Francisco

Mon 1/9

5:00 a.m.-10:25 a.m.

1 stop5h 25m

C$ 222

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 25/8

5:47 p.m.-11:29 p.m.

1 stop5h 42m

C$ 121

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 1/10

7:00 a.m.-5:45 p.m.

2 stops10h 45m

C$ 122

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sun 7/9

7:28 a.m.-9:51 a.m.

Nonstop2h 23m

C$ 136

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sun 24/8

7:00 a.m.-9:19 a.m.

Nonstop2h 19m

C$ 148

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 14/8

5:59 p.m.-8:15 p.m.

Nonstop2h 16m

C$ 155

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

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 round-trip 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 round-trip flight from Seattle to San Francisco. Price data was last updated on 25 July 2025.

Booking 57 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 C$ 276). Flying from Seattle to San Francisco in December is currently the most expensive (average of C$ 368). 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 28 July 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 59% on flights from Seattle to San Francisco by exploring options for tickets in the evening.

What is the cheapest day to fly from Seattle to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Seattle to San Francisco. Price data was last updated on 27 July 2025.

Travelers seeking maximum savings on their Seattle to San Francisco flight should consider departing on Friday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 28 July 2025.

The most flights from SEA to SFO are scheduled on a Monday (125 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (82 on average).

What’s the top layover airport for flights from Seattle to San Francisco?

Share of one-stop round-trip flights from Seattle to San Francisco chosen by Cheapflights users in the past 12 months, using the same layover each way.

Las Vegas (LAS) – chosen by Cheapflights users on 67% of one-stop itineraries from Seattle to San Francisco on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to San Francisco?

Average round-trip fare for 1-stop flights from Seattle to San Francisco, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of C$ 156.

What’s the fastest layover option from Seattle to San Francisco?

Shortest average travel time for 1-stop one-way flights from Seattle to San Francisco, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Las Vegas (LAS) have the shortest average one-way travel time for 1-stop routes: 4h 43m.

Which airport typically offers the quickest layover for flights from Seattle to San Francisco?

Average layover duration for 1-stop one-way flights from Seattle to San Francisco, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Las Vegas (LAS) offer the fastest connection on this route, with an average layover time of 4h 33m.

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 28 July 2025.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta 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
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,237 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,971 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,604 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,893 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    If you book a flight from Seattle to San Francisco, you will be flying from Seattle/Tacoma Intl to San Francisco. Flights to San Francisco (SFO) from Seattle/Tacoma Intl (SEA) take 2h 14m for a nonstop flight. There are 100 flights from Seattle/Tacoma Intl to San Francisco per day from 5 airlines.

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

    This flight path from Seattle/Tacoma Intl to San Francisco was viewed by 460 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Currently priced at C$ 193, Alaska Airlines will fly you from Seattle to San Francisco 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 Delta - these airlines can fly you to your destination from C$ 197 and C$ 201, respectively. Alaska Airlines is currently priced 39% below the average price you’ll pay for this route.

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

    C$ 121 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Southwest and Delta, with prices starting from C$ 122 and C$ 136, respectively.

  • 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 KLM (94%), China Southern (93%) or SWISS (92%) 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?

    The cheapest flight price from Seattle to San Francisco is C$ 105. On average you can expect to pay C$ 910. The most popular route, (Seattle/Tacoma Intl - San Francisco), can usually be booked for C$ 196.

  • 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 vacation 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 C$ 276). Flying from Seattle to San Francisco in December is currently the most expensive (average of C$ 368). 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
Richmond
Newark
Alameda
Redwood City
Burlingame
San Bruno
South San Francisco
Scotts Valley
Novato
Belmont
Millbrae
Santa Clara
Vallejo

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Las Vegas flights
Seattle to Los Angeles flights
Spokane to Las Vegas flights
Seattle to Ontario flights
Spokane to San Francisco flights
Seattle to Santa Ana flights
Seattle to San Jose flights
Bellingham to San Diego flights
Bellingham to Las Vegas flights
Seattle to Reno flights
Bellingham to Oakland flights
Bellingham to Los Angeles flights
Bellingham to San Francisco flights
Portland to San Francisco flights
Seattle to Burbank flights
Bellingham to Burbank flights
Seattle to Oakland flights
Portland to Los Angeles flights
Seattle to Sacramento flights
Seattle to Palm Springs flights
Seattle to San Diego flights
Spokane to Los Angeles flights
Bellingham to Santa Ana flights
Bellingham to Sacramento flights
Bellingham to Reno flights
Bellingham to Palm Springs flights

Top 5 airlines flying from Seattle to San Francisco

Discover the top 5 airlines 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 629,999 searches. Data last updated 28 July 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 94AverageC$ 208FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 152AverageC$ 311FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Alaska AirlinesCheapestC$ 159AverageC$ 250FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 206AverageC$ 318FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Hawaiian AirlinesCheapestC$ 222AverageC$ 252FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

Deals for Seattle to San Francisco flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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?

Yes! Start tracking prices for Seattle to San Francisco flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.