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Cheap flights from Seattle to San Francisco from C$ 94

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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SFO
16 Jun — 23 Jun1
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 Sunday 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 11 June 2025.

Round-trip from

C$ 188

One-way from

C$ 94

Popular in

December

Cheapest in

September

Average price

C$ 356

Good round-trip deal

C$ 242 or less

Good one-way deal

C$ 198 or less
United Airlines
  • United Airlines
  • 20/8-26/8
  • Nonstop
  • 4h 26m total
  • Seattle to San Francisco
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United Airlines
  • United Airlines
  • 23/8
  • Nonstop
  • 2h 19m total
  • Seattle to San Francisco
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 16 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).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to San Francisco.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to San Francisco.
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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 11 June 2025.

Wed 20/85:35 p.m.SEA - SFO
Nonstop2h 12mUnited Airlines
Tue 26/88:45 p.m.SFO - SEA
Nonstop2h 14mUnited Airlines
Deal found 8/6C$ 188
Tue 5/83:44 p.m.SEA - SFO
Nonstop2h 13mAlaska Airlines
Tue 5/88:49 p.m.SFO - SEA
Nonstop2h 13mAlaska Airlines
Deal found 9/6C$ 207
Thu 2/103:50 p.m.SEA - SFO
1 stop8h 15mSouthwest
Thu 23/104:10 p.m.SFO - SEA
1 stop8h 40mSouthwest
Deal found 9/6C$ 242
Thu 31/76:40 a.m.SEA - SFO
Nonstop2h 15mDelta
Tue 5/85:55 a.m.SFO - SEA
Nonstop2h 10mDelta
Deal found 10/6C$ 249
Fri 21/117:00 a.m.SEA - SFO
Nonstop2h 11mHawaiian Airlines
Mon 24/117:40 p.m.SFO - SEA
Nonstop2h 17mHawaiian Airlines
Deal found 10/6C$ 253

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 11 June 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 20/8

5:35 p.m.-7:47 p.m.

Nonstop2h 12m

San Francisco

Tue 26/8

8:45 p.m.-10:59 p.m.

Nonstop2h 14m

C$ 188

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 5/8

3:44 p.m.-5:57 p.m.

Nonstop2h 13m

San Francisco

Tue 5/8

8:49 p.m.-11:02 p.m.

Nonstop2h 13m

C$ 207

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 2/10

3:50 p.m.-12:05 a.m.

1 stop8h 15m

San Francisco

Thu 23/10

4:10 p.m.-12:50 a.m.

1 stop8h 40m

C$ 242

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 31/7

10:05 p.m.-12:19 a.m.

Nonstop2h 14m

San Francisco

Mon 4/8

5:55 a.m.-8:05 a.m.

Nonstop2h 10m

C$ 251

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 21/11

7:00 a.m.-9:11 a.m.

Nonstop2h 11m

San Francisco

Mon 24/11

7:40 p.m.-9:57 p.m.

Nonstop2h 17m

C$ 253

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 23/8

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

Nonstop2h 19m

C$ 94

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Mon 11/8

9:31 p.m.-11:43 p.m.

Nonstop2h 12m

C$ 108

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Tue 12/8

8:00 a.m.-2:12 p.m.

1 stop6h 12m

C$ 120

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 15/8

11:50 a.m.-7:50 p.m.

1 stop8h 00m

C$ 122

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 10/7

3:44 p.m.-5:57 p.m.

Nonstop2h 13m

C$ 133

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Showing 1-10 of 12 results
1
2

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 23 May 2025.

Booking 88 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 11 June 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 8 June 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 11 June 2025.

The most flights from SEA to SFO are scheduled on a Tuesday (119 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (30 on average).

Rainfall in San Francisco by month

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

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 mm per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Temperature in San Francisco by month

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

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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 11 June 2025.
To help decide which airline to fly from Seattle to San Francisco, see what other customers have to say about Alaska Airlines, Southwest and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

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

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

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
4,288 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

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
7,951 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,493 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

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
8,784 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

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 15m for a nonstop flight. There are 63 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 504 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$ 188, United Airlines will fly you from Seattle to San Francisco and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and Southwest - these airlines can fly you to your destination from C$ 207 and C$ 242, respectively. United Airlines is currently priced 40% 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$ 94 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Delta and Alaska Airlines, with prices starting from C$ 108 and C$ 120, 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 Horizon Air (100%), WestJet (90%) or Aeromexico (88%) 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$ 90. On average you can expect to pay C$ 566. The most popular route, (Seattle/Tacoma Intl - San Francisco), can usually be booked for C$ 249.

  • 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Richmond
San Ramon
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

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Alternative routes for Seattle to San Francisco

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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 11 June 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 94AverageC$ 235FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
FrontierCheapestC$ 152AverageC$ 311FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Alaska AirlinesCheapestC$ 159AverageC$ 254FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
United AirlinesCheapestC$ 206AverageC$ 318FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Hawaiian AirlinesCheapestC$ 222AverageC$ 251FlexibilityNo 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.

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