Which airline has the best punctuality record on Seattle to San Francisco flights?

Over the past year, United Airlines has had the lowest number of delays on this route, with just 15% of flights being delayed.

How often are flights from Seattle to San Francisco delayed?

About 21% of weekly flights between Seattle and San Francisco have experienced delays in the past year, with the average delay time being 132 minutes.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

What is the most punctual flight time for Seattle to San Francisco flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

How popular is this Seattle to San Francisco flight route?

This flight path from Seattle/Tacoma Intl to San Francisco was viewed by 123 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How long is the flight from Seattle to San Francisco?

A quick flight from Seattle to San Francisco can take about 2h 13m. United Airlines provides one of the quickest options available for as low as C$ 313. The distance between Seattle and San Francisco is about 1093 km. This flight may include one or multiple stops.

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

Currently priced at C$ 114, Delta will fly you from Seattle to San Francisco and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Alaska Airlines for as low as C$ 160. Delta is currently priced 67% 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$ 80 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Hawaiian Airlines and Alaska Airlines, with prices starting from C$ 84 and C$ 93, respectively.

Weekly flight availability from Seattle to San Francisco

The most flights from SEA to SFO are scheduled on a Tuesday (69 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).

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.

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).

What are the cheapest flights from Seattle to San Francisco?

The cheapest flight price from Seattle to San Francisco is C$ 121. On average you can expect to pay C$ 1,277. The most popular route, (Seattle/Tacoma Intl - San Francisco), can usually be booked for C$ 342.

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 Aeromexico (89%), Air France (83%) or SWISS (83%) as they are the most reliable in getting you off to your destination on time.

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 12m for a nonstop flight. There are 37 flights from Seattle/Tacoma Intl to San Francisco per day from 2 airlines.

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.

C$ 108+ Cheap Flights from Seattle to San Francisco

Q: How much does it cost to fly round-trip from Seattle to San Francisco?

Airfare is below average for this route at the moment. Seattle to San Francisco flights typically cost between C$ 530 and C$ 258 in May. The cheapest round-trip price found within the last 3 days was C$ 193 on United Airlines (19 May-26 May).

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to San Francisco are usually found in January or September, booked 78 days in advance, depart on a Friday or Thursday and return on a Thursday

Cheap flight deals from Seattle to San Francisco

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 21 April 2026.

Tue 26/53:33 p.m.

SEA

SFO

Nonstop2h 14m

United Airlines

Sat 30/59:10 p.m.

SFO

SEA

Nonstop2h 22m

United Airlines

Deal found 21/4C$ 193

Fri 14/89:42 p.m.

SEA

SFO

Nonstop2h 17m

Alaska Airlines

Sat 15/88:28 p.m.

SFO

SEA

Nonstop2h 13m

Alaska Airlines

Deal found 21/4C$ 201

Tue 12/52:53 p.m.

SEA

SFO

Nonstop2h 21m

Alaska Airlines

Tue 12/57:59 p.m.

SFO

SEA

Nonstop2h 19m

Alaska Airlines

Deal found 17/4C$ 208

Fri 14/89:42 p.m.

SEA

SFO

Nonstop2h 17m

Alaska Airlines

Thu 20/86:00 a.m.

SFO

SEA

Nonstop2h 11m

Alaska Airlines

Deal found 21/4C$ 209

Wed 13/57:15 a.m.

SEA

SFO

Nonstop2h 19m

Delta

Wed 20/55:55 a.m.

SFO

SEA

Nonstop2h 22m

Delta

Deal found 17/4C$ 215

Thu 18/65:20 p.m.

SEA

SFO

1 stop7h 30m

Southwest

Tue 30/65:20 p.m.

SFO

SEA

2 stops7h 20m

Southwest

Deal found 21/4C$ 216

Wed 3/65:35 p.m.

SEA

SFO

1 stop5h 40m

Southwest

Sat 6/65:55 p.m.

SFO

SEA

1 stop7h 15m

Southwest

Deal found 21/4C$ 220

Sat 4/77:45 a.m.

SEA

SFO

1 stop12h 05m

Southwest

Fri 10/76:45 p.m.

SFO

SEA

1 stop6h 55m

Southwest

Deal found 21/4C$ 222

Tue 12/57:08 a.m.

SEA

SFO

Nonstop2h 18m

United Airlines

Tue 19/510:35 p.m.

SFO

SEA

Nonstop2h 37m

United Airlines

Deal found 20/4C$ 226

Mon 1/69:40 a.m.

SEA

SFO

2 stops8h 45m

Southwest

Wed 3/61:45 p.m.

SFO

SEA

2 stops9h 10m

Southwest

Deal found 21/4C$ 228

Find flight deals from Seattle to San Francisco

Round-trip from	C$ 193
One-way from	C$ 108
Popular in	April
Cheapest in	January
Average price	C$ 414
Good round-trip deal	C$ 461 or less
Good one-way deal	C$ 375 or less

United Airlines
19/5-26/5
Nonstop
4h 28m total
Seattle to San Francisco

Search Deals

United Airlines
13/5
Nonstop
2h 13m total
Seattle to San Francisco

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (C$ 49 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2026

Search Deals

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.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sun 24/5

1:30 p.m.-3:48 p.m.

Nonstop2h 18m

San Francisco

Tue 26/5

10:59 p.m.-1:13 a.m.

Nonstop2h 14m

C$ 269

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 16/5

9:45 p.m.-12:05 a.m.

Nonstop2h 20m

San Francisco

Mon 18/5

5:55 a.m.-8:17 a.m.

Nonstop2h 22m

C$ 338

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 13/8

5:30 a.m.-1:30 p.m.

2 stops8h 00m

San Francisco

Sun 16/8

6:00 a.m.-11:45 a.m.

1 stop5h 45m

C$ 347

Quickest round-trip

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 8/10

1:35 p.m.-3:49 p.m.

Nonstop2h 14m

San Francisco

Mon 12/10

8:15 a.m.-10:28 a.m.

Nonstop2h 13m

C$ 351

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 15/8

5:00 a.m.-12:05 p.m.

1 stop7h 05m

San Francisco

Tue 18/8

9:35 a.m.-9:15 p.m.

2 stops11h 40m

C$ 386

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 17/7

6:05 p.m.-12:30 a.m.

2 stops6h 25m

San Francisco

Sat 18/7

5:55 p.m.-1:10 a.m.

1 stop7h 15m

C$ 386

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Sat 30/5

7:30 a.m.-5:25 p.m.

2 stops9h 55m

San Francisco

Sun 31/5

12:50 p.m.-1:10 a.m.

2 stops12h 20m

C$ 387

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Thu 8/10

9:15 a.m.-3:50 p.m.

2 stops6h 35m

San Francisco

Mon 12/10

12:40 p.m.-8:40 p.m.

1 stop8h 00m

C$ 399

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Fri 21/8

9:10 a.m.-2:40 p.m.

1 stop5h 30m

San Francisco

Sun 23/8

6:35 a.m.-4:05 p.m.

2 stops9h 30m

C$ 399

SeattleSan Francisco

SEA - SFO

SEASFO

Seattle/Tacoma Intl

Wed 20/5

5:30 a.m.-3:20 p.m.

2 stops9h 50m

San Francisco

Sun 24/5

2:35 p.m.-10:05 p.m.

2 stops7h 30m

C$ 413

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/4

Showing 1-10 of 24 resultsSorted by cheapest first

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.

SEA-SFO

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

Prices

Airlines

Delays

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

Booking 78 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$ 256). Flying from Seattle to San Francisco in April is currently the most expensive (average of C$ 414). 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?

Unlike in the evening, when flights are generally more expensive, you can save up to 28% on flights from Seattle to San Francisco by exploring options for tickets in the morning.

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

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.

How much does it cost to fly round-trip from Seattle to San Francisco?

Reviews of airlines servicing San Francisco

See what other customers who have flown with Alaska Airlines and Delta 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

7.9

Good

12,268 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

7.9

Good

12,268 reviews

Alaska Airlines

7.9

Good

12,268 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

7.9

Good

8,434 reviews

Alaska Airlines

7.9

Good

12,268 reviews

Check prices

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

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 12m for a nonstop flight. There are 37 flights from Seattle/Tacoma Intl to San Francisco per day from 2 airlines.
How popular is this Seattle to San Francisco flight route?
This flight path from Seattle/Tacoma Intl to San Francisco was viewed by 123 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from Seattle to San Francisco?
A quick flight from Seattle to San Francisco can take about 2h 13m. United Airlines provides one of the quickest options available for as low as C$ 313. The distance between Seattle and San Francisco is about 1093 km. This flight may include one or multiple stops.
What are the cheapest airlines flying from Seattle to San Francisco round-trip?
Currently priced at C$ 114, Delta will fly you from Seattle to San Francisco and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Alaska Airlines for as low as C$ 160. Delta is currently priced 67% 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$ 80 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Hawaiian Airlines and Alaska Airlines, with prices starting from C$ 84 and C$ 93, 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 Aeromexico (89%), Air France (83%) or SWISS (83%) 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$ 121. On average you can expect to pay C$ 1,277. The most popular route, (Seattle/Tacoma Intl - San Francisco), can usually be booked for C$ 342.
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$ 256). Flying from Seattle to San Francisco in April is currently the most expensive (average of C$ 414). 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

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San Bruno

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Novato

Santa Clara

Vallejo

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Top 2 airlines flying from Seattle to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
Delta	CheapestC$ 114	AverageC$ 181	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Alaska Airlines	CheapestC$ 160	AverageC$ 324	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights

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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.

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Cheap flights from Seattle to San Francisco from C$ 108

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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to San Francisco

Cheapest flights from Seattle to San FranciscoExplore 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 21 April 2026.

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 21 April 2026.

Best flights from Seattle to San FranciscoDiscover carefully curated flight deals from Seattle to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 21 April 2026.

Discover carefully curated flight deals from Seattle to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 21 April 2026.

Direct flights from Seattle to San FranciscoExplore direct flight options from Seattle to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 April 2026.

Explore direct flight options from Seattle to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 April 2026.

Last-minute flights from Seattle to San FranciscoDiscover last-minute flight deals from Seattle to San Francisco. Data last updated 21 April 2026 and is based on user searches.

Discover last-minute flight deals from Seattle to San Francisco. Data last updated 21 April 2026 and is based on user searches.

One-way flights from Seattle to San FranciscoSearch for one-way flight options from Seattle to San Francisco. Find affordable one-way fares based on user searches. Data last updated 21 April 2026.

Search for one-way flight options from Seattle to San Francisco. Find affordable one-way fares based on user searches. Data last updated 21 April 2026.

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Popular in

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Average price

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Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to San Francisco that are best for you.

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.

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?

What is the cheapest month to book a flight from Seattle to San Francisco?

What is the cheapest time of day to fly from SEA to SFO?

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

How much does it cost to fly round-trip from Seattle to San Francisco?

Weekly flight availability from Seattle to San Francisco

How often are flights from Seattle to San Francisco delayed?

What is the most punctual flight time for Seattle to San Francisco flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Seattle to San Francisco flights?

Reviews of airlines servicing San Francisco

See what other customers who have flown with Alaska Airlines and Delta 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.

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?

How popular is this Seattle to San Francisco flight route?

How long is the flight from Seattle to San Francisco?

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

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

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

What are the cheapest flights from Seattle to San Francisco?

Can I find deals for flights from Seattle to San Francisco that include hotel bookings?

How can I find direct flights from Seattle to San Francisco?

Can I find deals for business class flights from Seattle to San Francisco?

What is the cheapest month to book a flight from Seattle to San Francisco?

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Alternative routes for Seattle to San Francisco

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Complete your trip

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Direct flights to California

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Seattle and San Francisco flights

Browse other Seattle and San Francisco flight options. Last updated on 21 April 2026.

Other flights from Seattle

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Top 2 airlines flying from Seattle to San Francisco

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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 21 April 2026.

Best flights from Seattle to San Francisco
Discover carefully curated flight deals from Seattle to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 21 April 2026.

Direct flights from Seattle to San Francisco
Explore direct flight options from Seattle to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 April 2026.

Last-minute flights from Seattle to San Francisco
Discover last-minute flight deals from Seattle to San Francisco. Data last updated 21 April 2026 and is based on user searches.

One-way flights from Seattle to San Francisco
Search for one-way flight options from Seattle to San Francisco. Find affordable one-way fares based on user searches. Data last updated 21 April 2026.