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Cheap flights from San Francisco to Seattle from C$ 99

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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — SEA
22 Jan — 29 Jan1
1 adult

The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or February, booked 83 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 17 January 2025.

Round-trip from

C$ 188

One-way from

C$ 99

Popular in

June

Cheapest in

October

Average price

C$ 308
Alaska Airlines
  • Alaska Airlines
  • 4/2-4/2
  • Nonstop
  • 4h 27m total
  • San Francisco to Seattle
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Alaska Airlines
  • Alaska Airlines
  • 12/2
  • Nonstop
  • 2h 18m total
  • San Francisco to Seattle
Search Deals
High demand for flights, 11% potential price rise
Search Deals
Best time to find cheap flights, 2% potential price drop
Search Deals
Average for round-trip flights in January 2025
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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 17 January 2025.

Tue 4/28:20 a.m.SFO - SEA
Nonstop2h 15mAlaska Airlines
Tue 4/21:23 p.m.SEA - SFO
Nonstop2h 12mAlaska Airlines
Deal found 15/1C$ 188
Wed 19/28:53 a.m.SFO - SEA
Nonstop2h 19mUnited Airlines
Wed 19/23:24 p.m.SEA - SFO
Nonstop2h 18mUnited Airlines
Deal found 16/1C$ 197
Wed 12/28:40 p.m.SFO - SEA
Nonstop2h 25mDelta
Sun 16/26:10 a.m.SEA - SFO
Nonstop2h 21mDelta
Deal found 16/1C$ 218
Tue 4/26:05 a.m.SFO - SEA
1 stop8h 20mSouthwest
Wed 5/212:20 p.m.SEA - SFO
1 stop10h 15mSouthwest
Deal found 16/1C$ 359

Find flights from San Francisco to Seattle within your budget

Customize 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 629,999 searches. Data last updated 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 4/2

8:20 a.m.-10:35 a.m.

Nonstop2h 15m

Seattle/Tacoma Intl

Tue 4/2

1:23 p.m.-3:35 p.m.

Nonstop2h 12m

C$ 188

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 19/2

8:53 a.m.-11:12 a.m.

Nonstop2h 19m

Seattle/Tacoma Intl

Wed 19/2

3:24 p.m.-5:42 p.m.

Nonstop2h 18m

C$ 197

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 12/2

8:40 p.m.-11:05 p.m.

Nonstop2h 25m

Seattle/Tacoma Intl

Sun 16/2

6:10 a.m.-8:31 a.m.

Nonstop2h 21m

C$ 218

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 4/2

6:05 a.m.-2:25 p.m.

1 stop8h 20m

Seattle/Tacoma Intl

Wed 5/2

12:20 p.m.-10:35 p.m.

1 stop10h 15m

C$ 359

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 12/2

10:00 a.m.-12:18 p.m.

Nonstop2h 18m

C$ 99

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 13/2

6:10 a.m.-8:35 a.m.

Nonstop2h 25m

C$ 121

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 27/5

4:25 p.m.-9:58 p.m.

1 stop5h 33m

C$ 135

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 12/2

9:00 a.m.-8:10 p.m.

2 stops11h 10m

C$ 190

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 30/1

6:25 p.m.-12:19 a.m.

3 stops29h 54m

C$ 500

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/1

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 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.

Travel insights for flights from San Francisco to Seattle

Get recent, data-driven insights about flights from San Francisco to Seattle including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Seattle. Price data was last updated on 10 January 2025.

The price you pay for your flight from San Francisco to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 83 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 C$ 257). Flying from San Francisco to Seattle in April is currently the most expensive (average of C$ 421). 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 17 January 2025.

It’s typically best to fly out from San Francisco to Seattle in the morning. Doing so could potentially save you 27% on the flight price compared to flying at noon, 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 17 January 2025.

The most flights from SFO to SEA are scheduled on a Thursday (95 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 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 mm 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 17 January 2025.
To help decide which airline to fly from San Francisco to Seattle, see what other customers have to say about Alaska Airlines, United Airlines and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,659 reviews
Check prices

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews
Check prices

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Alaska Airlines
8.0
Very good
9,681 reviews
Southwest
8.1
Very good
4,659 reviews
Check prices

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews
Check prices

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

United Airlines
7.4
Good
8,964 reviews
Southwest
8.1
Very good
4,659 reviews
Check prices

Entertainment

7.7

Overall

8.1

Crew

8.7

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Sheila did great! First time I have ever seen all three people in an exit row get out and read the safety information card AFTER the briefing. I like the boarding process. It seems a shame to UN-differentiate SW because of abuse of the early boarding process.

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?

    Booking a flight from San Francisco (SFO) to Seattle/Tacoma Intl (SEA) is your only option if you wish to fly from San Francisco to Seattle. On a typical day, there are 60 flights from San Francisco to Seattle/Tacoma Intl, all of which are around 2h 20m for a nonstop flight. You can also purchase a plane ticket from 1 airline when you book a flight from San Francisco to Seattle.

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

    This flight path from San Francisco to Seattle/Tacoma Intl was viewed by 33 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 San Francisco to Seattle round-trip?

    Cheapflights users have booked flights from San Francisco to Seattle round-trip from C$ 188. Other airlines that can offer you cheap pricing are United Airlines, from C$ 197, and Delta, from C$ 218. Alaska Airlines is priced at 47% 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?

    C$ 99 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 Delta and United Airlines, with prices starting from C$ 121 and C$ 135, 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 (94%), Air France (90%) or Horizon Air (88%) 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 for the cheapest flight from San Francisco to Seattle? While on average our users pay C$ 266, our data indicates the cheapest price to be C$ 98. The most popular route (San Francisco - Seattle/Tacoma Intl), is priced around C$ 218.

  • 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 vacation 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 C$ 257). Flying from San Francisco to Seattle in April is currently the most expensive (average of C$ 421). 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
SeaTac
Marysville
Tukwila
Tacoma
Bothell
Olympia
Lynnwood
Leavenworth

Browse thousands of different options on Cheapflights for your next trip

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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 629,999 searches. Data last updated 17 January 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 194AverageC$ 314FlexibilityNo cancel feeOn-time75%
Search Alaska 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 San Francisco to Seattle?

Deals for San Francisco to Seattle 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 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?

Need flexible booking options for your flight to Seattle from San Francisco? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for San Francisco to Seattle 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.

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