How popular is this San Francisco to Seattle flight route?

Within the past month, 131 users have taken a look at flights from San Francisco to Seattle/Tacoma Intl.

How long is the flight from San Francisco to Seattle?

There are many flights that can get you from San Francisco to Seattle in 2h 20m. Fly via Southwest, Delta, or Alaska Airlines to get the fastest option. The distance from San Francisco to Seattle is about 679 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

Our cheapest airline available from San Francisco to Seattle is Spirit Airlines. Our recent data shows that you can find tickets from as low as $64 on this airline. Additional options worth looking into are Frontier and Delta, starting at $101 and $112 round-trip. Spirit Airlines is currently priced 72% below the average price you’ll pay for this route.

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

To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $69. Hawaiian Airlines flights start at $69 while deals on Alaska Airlines start at $69 one-way.

Weekly flight availability from San Francisco to Seattle

The most flights from SFO to SEA are scheduled on a Thursday (115 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 on average).

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

What are the cheapest flights from San Francisco to Seattle?

While on average a flight from San Francisco to Seattle is generally $588, our data shows the cheapest flight currently is $70. When looking at the most popular route, (San Francisco - Seattle/Tacoma Intl), you can expect to pay $83 for that flight.

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

Before booking your flight to Seattle from San Francisco, check out the most reliable airlines to get you to your destination on time: Scandinavian Airlines (92%), KLM (87%), WestJet( 86%).

What are the most popular airlines that fly from San Francisco to Seattle?

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from San Francisco to Seattle.

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

Travelers have found that booking a Thursday departure is the best way to save up to 46% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 41 days in advance, which can save you up to 162% on flights from San Francisco to Seattle compared to booking the week you need them. Waiting 41 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $360. For sooner than that we have options available in the next 3 days from $453.

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

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, October can be a great choice for travel to Seattle. Flights to Seattle from San Francisco in October are about $238 on average during October, but can be found for as low as $115.

What airports do I use to fly from San Francisco to Seattle?

Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from San Francisco. Booking flights from San Francisco (SFO) to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 71 daily flights to Seattle from 7 different airlines. 1h 56m is how long a flight from San Francisco to Seattle/Tacoma Intl will take if you book a nonstop flight.

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.

$69+ Flights from San Francisco to Seattle

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Find cheap flights from San Francisco to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or January, booked 79 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from San Francisco to Seattle

Round-trip from	$138 (Southwest)
One-way from	$69 (Delta)
Popular in	August
Cheapest in	October
Average price	$218
Good round-trip deal	$226 or less
Good one-way deal	$145 or less

From San Francisco to Seattle/Tacoma Intl

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One-way flight from San Francisco to Seattle/Tacoma Intl

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Highest demand for flights based on searches. 9% potential increase in price ($25 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Price to beat on a round-trip flight from San Francisco to Seattle/Tacoma Intl.

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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 September 11, 2025.

Tue 10/213:50 pmSFO - SEA

1 stop7h 10mSouthwest

Sat 10/255:00 amSEA - SFO

1 stop6h 50mSouthwest

Deal found 9/10

$138

Tue 9/3011:44 amSFO - SEA

1 stop3h 51mAlaska Airlines

Wed 10/18:08 amSEA - SFO

Nonstop2h 24mAlaska Airlines

Deal found 9/9

$139

Thu 10/24:10 pmSFO - SEA

1 stop8h 40mSouthwest

Tue 10/75:50 amSEA - SFO

1 stop9h 10mSouthwest

Deal found 9/9

$140

Tue 9/3012:10 pmSFO - SEA

Nonstop2h 14mUnited Airlines

Sat 10/45:31 pmSEA - SFO

Nonstop2h 13mUnited Airlines

Deal found 9/10

$141

Tue 9/308:58 pmSFO - SEA

Nonstop2h 17mDelta

Thu 10/27:20 amSEA - SFO

Nonstop2h 28mDelta

Deal found 9/10

$142

Tue 9/307:00 amSFO - SEA

2 stops7h 10mSouthwest

Wed 10/19:55 amSEA - SFO

2 stops9h 55mSouthwest

Deal found 9/9

$143

Fri 10/319:55 pmSFO - SEA

1 stop11h 23mFrontier

Mon 11/33:01 pmSEA - SFO

1 stop9h 13mFrontier

Deal found 9/11

$144

Wed 10/152:05 pmSFO - SEA

2 stops8h 40mSouthwest

Mon 10/203:35 pmSEA - SFO

1 stop8h 10mSouthwest

Deal found 9/9

$145

Thu 10/94:10 pmSFO - SEA

1 stop8h 40mSouthwest

Tue 10/146:55 amSEA - SFO

1 stop10h 10mSouthwest

Deal found 9/9

$146

Fri 10/38:00 amSFO - SEA

1 stop6h 26mAlaska Airlines

Tue 10/77:00 amSEA - SFO

Nonstop2h 16mAlaska Airlines

Deal found 9/11

$147

Tue 9/237:10 amSFO - SEA

1 stop15h 49mMultiple Airlines

Sat 10/1111:20 amSEA - SFO

1 stop4h 43mMultiple Airlines

Deal found 9/11

$148

Wed 10/15:14 pmSFO - SEA

1 stop4h 10mAlaska Airlines

Thu 10/29:40 pmSEA - SFO

Nonstop2h 24mAlaska Airlines

Deal found 9/9

$149

Best flights from San Francisco to Seattle
Discover carefully curated flight deals from San Francisco to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Wed 10/153:50 pmSFO - SEA

1 stop7h 10mSouthwest

Sat 10/186:35 amSEA - SFO

1 stop10h 10mSouthwest

Deal found 9/11

$141

Fri 11/76:00 amSFO - SEA

Nonstop2h 20mDelta

Tue 11/111:37 pmSEA - SFO

Nonstop2h 20mDelta

Deal found 9/11

$142

Wed 10/153:51 pmSFO - SEA

1 stop6h 39mAlaska Airlines

Sat 10/188:15 pmSEA - SFO

Nonstop2h 14mAlaska Airlines

Deal found 9/11

$147

Sat 10/259:47 pmSFO - SEA

Nonstop2h 21mHawaiian Airlines

Sun 10/268:24 amSEA - SFO

Nonstop2h 20mHawaiian Airlines

Deal found 9/11

$157

Mon 10/2012:10 pmSFO - SEA

Nonstop2h 14mUnited Airlines

Tue 10/217:37 pmSEA - SFO

Nonstop2h 13mUnited Airlines

Deal found 9/11

$159

Fri 10/39:19 pmSFO - SEA

Nonstop2h 23mMultiple Airlines

Mon 10/612:30 pmSEA - SFO

1 stop10h 45mMultiple Airlines

Deal found 9/11

$171

Thu 10/96:00 amSFO - SEA

Nonstop2h 20mDelta

Tue 10/147:10 amSEA - SFO

Nonstop2h 14mDelta

Deal found 9/9

$157

Fri 10/31:24 pmSFO - SEA

1 stop3h 36mHawaiian Airlines

Tue 10/78:00 amSEA - SFO

Nonstop2h 24mHawaiian Airlines

Deal found 9/10

$167

Fri 10/39:00 pmSFO - SEA

Nonstop2h 15mUnited Airlines

Sun 10/57:00 amSEA - SFO

Nonstop2h 20mUnited Airlines

Deal found 9/11

$172

Fri 10/38:00 amSFO - SEA

1 stop6h 26mAlaska Airlines

Wed 10/811:24 amSEA - SFO

Nonstop2h 20mAlaska Airlines

Deal found 9/11

$173

Sat 10/116:00 amSFO - SEA

Nonstop2h 20mDelta

Sun 10/127:25 amSEA - SFO

Nonstop2h 30mDelta

Deal found 9/11

$167

Mon 9/291:45 pmSFO - SEA

Nonstop2h 21mDelta

Wed 10/17:20 amSEA - SFO

Nonstop2h 28mDelta

Deal found 9/10

$172

Last-minute flights from San Francisco to Seattle
Discover last-minute flight deals from San Francisco to Seattle. Data last updated September 11, 2025 and is based on user searches.

Tue 9/237:10 amSFO - SEA

1 stop15h 49mMultiple Airlines

Sat 10/1111:20 amSEA - SFO

1 stop4h 43mMultiple Airlines

Deal found 9/11

$148

Tue 9/308:58 pmSFO - SEA

Nonstop2h 17mDelta

Thu 10/27:20 amSEA - SFO

Nonstop2h 28mDelta

Deal found 9/10

$142

Thu 10/94:10 pmSFO - SEA

1 stop8h 40mSouthwest

Tue 10/146:55 amSEA - SFO

1 stop10h 10mSouthwest

Deal found 9/9

$146

Tue 10/143:50 pmSFO - SEA

1 stop7h 10mSouthwest

Sat 10/186:35 amSEA - SFO

1 stop10h 10mSouthwest

Deal found 9/10

$141

Thu 10/168:20 amSFO - SEA

Nonstop2h 14mAlaska Airlines

Mon 10/207:00 amSEA - SFO

Nonstop2h 16mAlaska Airlines

Deal found 9/11

$149

Sat 10/186:20 pmSFO - SEA

Nonstop2h 15mAlaska Airlines

Mon 10/205:55 pmSEA - SFO

1 stop6h 03mAlaska Airlines

Deal found 9/11

$147

Tue 10/213:50 pmSFO - SEA

1 stop7h 10mSouthwest

Sat 10/255:00 amSEA - SFO

1 stop6h 50mSouthwest

Deal found 9/10

$138

Thu 10/237:00 amSFO - SEA

Nonstop2h 10mAlaska Airlines

Sun 10/268:24 amSEA - SFO

Nonstop2h 20mAlaska Airlines

Deal found 9/10

$143

Sat 10/251:23 pmSFO - SEA

1 stop3h 37mHawaiian Airlines

Sat 11/15:20 amSEA - SFO

1 stop3h 35mHawaiian Airlines

Deal found 9/10

$144

Sat 10/257:40 amSFO - SEA

1 stop6h 55mMultiple Airlines

Sat 11/112:58 pmSEA - SFO

1 stop9h 29mMultiple Airlines

Deal found 9/10

$145

Wed 10/292:05 pmSFO - SEA

2 stops8h 40mSouthwest

Thu 10/309:55 amSEA - SFO

2 stops8h 05mSouthwest

Deal found 9/10

$139

One-way flights from San Francisco to Seattle
Search for one-way flight options from San Francisco to Seattle. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Wed 11/266:00 amSFO - SEA

Nonstop2h 23mDelta

Deal found 9/11

$69

Sun 10/1910:38 pmSFO - SEA

1 stop14h 48mFrontier

Deal found 9/9

$70

Thu 10/210:11 pmSFO - SEA

1 stop13h 30mFrontier

Deal found 9/10

$72

Tue 9/3011:44 amSFO - SEA

1 stop3h 51mAlaska Airlines

Deal found 9/9

$73

Wed 10/812:00 pmSFO - SEA

1 stop7h 48mFrontier

Deal found 9/10

$74

Mon 10/67:07 pmSFO - SEA

1 stop17h 00mFrontier

Deal found 9/10

$75

Wed 10/159:00 pmSFO - SEA

Nonstop2h 15mUnited Airlines

Deal found 9/11

$76

Tue 10/71:23 pmSFO - SEA

1 stop3h 37mAlaska Airlines

Deal found 9/10

$77

Wed 11/121:11 pmSFO - SEA

1 stop5h 59mAlaska Airlines

Deal found 9/11

$78

Wed 10/153:50 pmSFO - SEA

1 stop7h 10mSouthwest

Deal found 9/11

$79

Tue 9/305:25 pmSFO - SEA

1 stop5h 25mSouthwest

Deal found 9/11

$80

Sun 9/219:31 amSFO - SEA

1 stop27h 21mFrontier

Deal found 9/11

$81

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 10/15

3:50 pm-11:00 pm

1 stop7h 10m

Seattle/Tacoma Intl

Sat 10/18

6:35 am-4:45 pm

1 stop10h 10m

$141

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 11/7

6:00 am-8:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Tue 11/11

1:37 pm-3:57 pm

Nonstop2h 20m

$142

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Wed 10/15

3:51 pm-10:30 pm

1 stop6h 39m

Seattle/Tacoma Intl

Sat 10/18

8:15 pm-10:29 pm

Nonstop2h 14m

$147

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 10/25

9:47 pm-12:08 am

Nonstop2h 21m

Seattle/Tacoma Intl

Sun 10/26

8:24 am-10:44 am

Nonstop2h 20m

$157

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 10/9

6:00 am-8:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Tue 10/14

7:10 am-9:24 am

Nonstop2h 14m

$157

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 10/20

12:10 pm-2:24 pm

Nonstop2h 14m

Seattle/Tacoma Intl

Tue 10/21

7:37 pm-9:50 pm

Nonstop2h 13m

$159

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 10/3

1:24 pm-5:00 pm

1 stop3h 36m

Seattle/Tacoma Intl

Tue 10/7

8:00 am-10:24 am

Nonstop2h 24m

$167

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 10/11

6:00 am-8:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Sun 10/12

7:25 am-9:55 am

Nonstop2h 30m

$167

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 10/3

9:19 pm-11:42 pm

Nonstop2h 23m

Seattle/Tacoma Intl

Mon 10/6

12:30 pm-11:15 pm

1 stop10h 45m

$171

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 10/3

9:00 pm-11:15 pm

Nonstop2h 15m

Seattle/Tacoma Intl

Sun 10/5

7:00 am-9:20 am

Nonstop2h 20m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 23 results

The best insider tips for San Francisco to Seattle flights

Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Seattle trip

Airports

SFO

Save time by ordering meals for pickup from restaurants participating in the SFO2Go program during busy times.

SEA

Use the Link light rail for an inexpensive, convenient trip from SEA to downtown Seattle in under 40 minutes.

Our travel experts

Harriet Baskas

Expert on SFO

Brandon Schultz

Expert on SEA

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.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Seattle

Prices

Airlines

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

The best time to book flights from San Francisco to Seattle is 40 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $238). Flying from San Francisco to Seattle in June is currently the most expensive (average of $388). 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?

A simple way to save on the total cost of your ticket is to fly from San Francisco to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight at noon.

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

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

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from San Francisco to Seattle, such as Alaska Airlines, Delta, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Delta

8.0

Very good

7,960 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Hawaiian Airlines

7.8

Good

2,723 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

United Airlines

7.4

Good

8,937 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Frontier

5.8

Fair

3,177 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Related info for your journey

What airports do I use to fly from San Francisco to Seattle?
Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from San Francisco. Booking flights from San Francisco (SFO) to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 71 daily flights to Seattle from 7 different airlines. 1h 56m is how long a flight from San Francisco to Seattle/Tacoma Intl will take if you book a nonstop flight.
How popular is this San Francisco to Seattle flight route?
Within the past month, 131 users have taken a look at flights from San Francisco to Seattle/Tacoma Intl.
How long is the flight from San Francisco to Seattle?
There are many flights that can get you from San Francisco to Seattle in 2h 20m. Fly via Southwest, Delta, or Alaska Airlines to get the fastest option. The distance from San Francisco to Seattle is about 679 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from San Francisco to Seattle round-trip?
Our cheapest airline available from San Francisco to Seattle is Spirit Airlines. Our recent data shows that you can find tickets from as low as $64 on this airline. Additional options worth looking into are Frontier and Delta, starting at $101 and $112 round-trip. Spirit Airlines is currently priced 72% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from San Francisco to Seattle one-way?
To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $69. Hawaiian Airlines flights start at $69 while deals on Alaska Airlines start at $69 one-way.
What are the most reliable airlines from San Francisco to Seattle?
Before booking your flight to Seattle from San Francisco, check out the most reliable airlines to get you to your destination on time: Scandinavian Airlines (92%), KLM (87%), WestJet( 86%).
What are the cheapest flights from San Francisco to Seattle?
While on average a flight from San Francisco to Seattle is generally $588, our data shows the cheapest flight currently is $70. When looking at the most popular route, (San Francisco - Seattle/Tacoma Intl), you can expect to pay $83 for that flight.
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 $238). Flying from San Francisco to Seattle in June is currently the most expensive (average of $388). 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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Shoreline

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Other flights to Seattle

Top 7 airlines flying from San Francisco to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$64	Average$180	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$101	Average$218	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$112	Average$198	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$129	Average$263	FlexibilityNo cancel fee	On-time69%
Hawaiian Airlines	Cheapest$131	Average$271	FlexibilityNo cancel fee	On-time85%
Alaska Airlines	Cheapest$133	Average$247	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$226	Average$417	FlexibilityNo cancel fee	On-time71%

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$69+ Cheap flights from San Francisco to Seattle (SFO - SEA)

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Francisco to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or January, booked 79 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from San Francisco to Seattle

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San Francisco to Seattle

Cheapest flights from San Francisco to SeattleExplore 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 September 11, 2025.

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 September 11, 2025.

Cheapflights Fare Finder

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

The best insider tips for San Francisco to Seattle flights

Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Seattle trip

Airports

SFO

SEA

Our travel experts

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.

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?

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

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

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

Weekly flight availability from San Francisco to Seattle

Reviews of airlines servicing Seattle

Read through reviews of airlines operating flights from San Francisco to Seattle, such as Alaska Airlines, Delta, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and 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?

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

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

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What are the cheapest flights from San Francisco to Seattle?

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

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Top 7 airlines flying from San Francisco to Seattle

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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 September 11, 2025.