How popular is this San Francisco to Seattle flight route?

Within the past month, 123 users have taken a look at flights from San Francisco to Seattle/Tacoma Intl.

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

Our cheapest airline available from San Francisco to Seattle is Alaska Airlines. Our recent data shows that you can find tickets from as low as $156 on this airline. Additional options worth looking into are Hawaiian Airlines and Delta, starting at $158 and $162 round-trip. Alaska Airlines is currently priced 36% 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $78. Delta flights start at $79 while deals on American Airlines start at $80 one-way.

What are the cheapest flights from San Francisco to Seattle?

While on average a flight from San Francisco to Seattle is generally $1,144, our data shows the cheapest flight currently is $74. When looking at the most popular route, (San Francisco - Seattle/Tacoma Intl), you can expect to pay $131 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: Horizon Air (100%), Aeromexico (97%), Copa Airlines( 92%).

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 25% 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 54 days in advance, which can save you up to 172% on flights from San Francisco to Seattle compared to booking the week you need them. Waiting 54 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 $380. For sooner than that we have options available in the next 3 days from $526.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, October can be a great choice for travel to Seattle. Flights to Seattle from San Francisco in October are about $245 on average during October, but can be found for as low as $115.

Most accurate provider : When it comes to deals on San Francisco-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Francisco-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 45 daily flights to Seattle from 8 different airlines. 2h 04m 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.

$78+ Flights from San Francisco to Seattle

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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

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San Francisco to Seattle/Tacoma Intl are usually found in October or January, booked 86 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from San Francisco to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$155 (lastminute.com)
One-way from	$78 (Alaska Airlines)
Popular in	June
Cheapest in	October
Average price	$247
Good round-trip deal	$190 or less
Good one-way deal	$85 or less

Provider with most accurate pricing for San Francisco-Seattle/Tacoma Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Francisco-Seattle/Tacoma Intl flights.

Search Deals

From San Francisco to Seattle/Tacoma Intl

Search Deals

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

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($30 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

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.

Search Deals

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 March 28, 2025.

Sat 5/31:21 pmSFO - SEA

1 stop5h 20mMultiple Airlines

Mon 5/58:13 amSEA - SFO

Nonstop2h 17mMultiple Airlines

Deal found 3/27

$155

Wed 6/48:39 amSFO - SEA

1 stop8h 19mAlaska Airlines

Wed 6/114:16 pmSEA - SFO

1 stop5h 22mAlaska Airlines

Deal found 3/28

$156

Sat 5/31:21 pmSFO - SEA

1 stop6h 59mHawaiian Airlines

Mon 5/58:13 amSEA - SFO

Nonstop2h 17mHawaiian Airlines

Deal found 3/27

$158

Sun 6/155:55 amSFO - SEA

Nonstop2h 19mDelta

Wed 6/189:55 pmSEA - SFO

Nonstop2h 16mDelta

Deal found 3/28

$162

Thu 4/177:05 amSFO - SEA

1 stop6h 54mUnited Airlines

Fri 4/185:15 amSEA - SFO

Nonstop2h 12mUnited Airlines

Deal found 3/27

$172

Fri 4/1810:29 pmSFO - SEA

1 stop11h 06mFrontier

Fri 4/2512:30 pmSEA - SFO

1 stop12h 03mFrontier

Deal found 3/28

$198

Tue 4/2912:45 pmSFO - SEA

2 stops9h 45mSouthwest

Wed 4/309:15 amSEA - SFO

2 stops9h 30mSouthwest

Deal found 3/27

$215

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 March 28, 2025.

Sat 5/31:21 pmSFO - SEA

1 stop5h 20mMultiple Airlines

Mon 5/58:13 amSEA - SFO

Nonstop2h 17mMultiple Airlines

Deal found 3/27

$155

Wed 6/48:39 amSFO - SEA

1 stop5h 34mAlaska Airlines

Tue 6/104:50 pmSEA - SFO

1 stop4h 47mAlaska Airlines

Deal found 3/28

$156

Sat 5/31:21 pmSFO - SEA

1 stop6h 59mHawaiian Airlines

Mon 5/58:13 amSEA - SFO

Nonstop2h 17mHawaiian Airlines

Deal found 3/27

$158

Sun 6/155:55 amSFO - SEA

Nonstop2h 19mDelta

Wed 6/189:55 pmSEA - SFO

Nonstop2h 16mDelta

Deal found 3/28

$162

Thu 4/177:05 amSFO - SEA

1 stop6h 54mUnited Airlines

Fri 4/185:15 amSEA - SFO

Nonstop2h 12mUnited Airlines

Deal found 3/27

$172

Fri 4/1810:29 pmSFO - SEA

1 stop11h 06mFrontier

Fri 4/2512:30 pmSEA - SFO

1 stop12h 03mFrontier

Deal found 3/28

$198

Tue 4/2912:45 pmSFO - SEA

2 stops9h 45mSouthwest

Wed 4/309:15 amSEA - SFO

2 stops9h 30mSouthwest

Deal found 3/27

$215

Last-minute flights from San Francisco to Seattle
Discover last-minute flight deals from San Francisco to Seattle. Data last updated March 28, 2025 and is based on user searches.

Tue 4/14:10 pmSFO - SEA

1 stop5h 33mUnited Airlines

Fri 5/25:13 pmSEA - SFO

1 stop6h 54mUnited Airlines

Deal found 3/27

$412

Wed 4/21:45 pmSFO - SEA

Nonstop2h 17mDelta

Tue 4/225:40 pmSEA - SFO

Nonstop2h 17mDelta

Deal found 3/26

$322

Wed 4/211:55 amSFO - SEA

1 stop7h 57mAlaska Airlines

Tue 4/227:00 amSEA - SFO

Nonstop2h 15mAlaska Airlines

Deal found 3/26

$331

Thu 4/312:08 amSFO - SEA

1 stop15h 18mFrontier

Fri 5/212:21 pmSEA - SFO

1 stop12h 10mFrontier

Deal found 3/27

$218

Fri 4/412:05 pmSFO - SEA

2 stops11h 45mSouthwest

Fri 4/115:35 amSEA - SFO

1 stop6h 30mSouthwest

Deal found 3/26

$452

Sat 4/55:59 pmSFO - SEA

Nonstop2h 08mHawaiian Airlines

Tue 4/87:59 pmSEA - SFO

Nonstop2h 10mHawaiian Airlines

Deal found 3/27

$256

Sun 4/612:08 amSFO - SEA

1 stop15h 18mMultiple Airlines

Tue 4/227:00 amSEA - SFO

Nonstop2h 15mMultiple Airlines

Deal found 3/26

$198

Thu 4/177:05 amSFO - SEA

1 stop6h 54mUnited Airlines

Fri 4/185:15 amSEA - SFO

Nonstop2h 12mUnited Airlines

Deal found 3/27

$172

Fri 4/1810:29 pmSFO - SEA

1 stop11h 06mMultiple Airlines

Sat 4/268:13 amSEA - SFO

Nonstop2h 17mMultiple Airlines

Deal found 3/28

$178

Fri 4/1810:29 pmSFO - SEA

1 stop11h 06mFrontier

Sat 4/266:00 amSEA - SFO

1 stop9h 20mFrontier

Deal found 3/28

$198

Sat 4/193:16 pmSFO - SEA

1 stop6h 25mHawaiian Airlines

Mon 4/211:57 pmSEA - SFO

1 stop5h 29mHawaiian Airlines

Deal found 3/27

$176

Tue 4/226:40 amSFO - SEA

1 stop5h 28mAlaska Airlines

Tue 4/224:32 pmSEA - SFO

1 stop7h 27mAlaska Airlines

Deal found 3/27

$156

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 March 28, 2025.

Tue 4/296:40 amSFO - SEA

1 stop5h 28mAlaska Airlines

Deal found 3/27

$78

Fri 4/256:05 amSFO - SEA

Nonstop2h 22mDelta

Deal found 3/28

$79

Sat 5/241:05 pmSFO - SEA

1 stop5h 26mAmerican Airlines

Deal found 3/27

$80

Mon 6/98:39 amSFO - SEA

1 stop5h 56mHawaiian Airlines

Deal found 3/27

$81

Fri 6/2010:50 pmSFO - SEA

Nonstop2h 09mUnited Airlines

Deal found 3/27

$84

Mon 6/95:05 pmSFO - SEA

2 stops8h 20mSouthwest

Deal found 3/27

$94

Thu 4/244:10 pmSFO - SEA

1 stop8h 34mFrontier

Deal found 3/28

$99

Tue 4/88:25 amSFO - SEA

1 stop14h 02mJetBlue

Deal found 3/27

$231

Mon 5/196:09 pmSFO - SEA

3 stops30h 01mMultiple Airlines

Deal found 3/27

$298

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

Sat 5/3

1:21 pm-6:41 pm

1 stop5h 20m

Seattle/Tacoma Intl

Mon 5/5

7:00 am-9:15 am

Nonstop2h 15m

$155

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 5/3

1:21 pm-8:20 pm

1 stop6h 59m

Seattle/Tacoma Intl

Mon 5/5

8:13 am-10:30 am

Nonstop2h 17m

$158

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 6/15

5:55 am-8:14 am

Nonstop2h 19m

Seattle/Tacoma Intl

Tue 6/24

9:55 pm-12:11 am

Nonstop2h 16m

$162

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 5/11

7:15 am-10:38 am

1 stop3h 23m

Seattle/Tacoma Intl

Sun 5/18

7:00 am-9:15 am

Nonstop2h 15m

$163

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 4/17

7:05 am-1:59 pm

1 stop6h 54m

Seattle/Tacoma Intl

Fri 4/18

5:15 am-7:27 am

Nonstop2h 12m

$172

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 4/18

10:29 pm-9:35 am

1 stop11h 06m

Seattle/Tacoma Intl

Sat 4/19

4:22 pm-12:44 am

1 stop8h 22m

$198

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 4/29

12:45 pm-10:30 pm

2 stops9h 45m

Seattle/Tacoma Intl

Wed 4/30

9:15 am-6:45 pm

2 stops9h 30m

$215

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 4/29

6:40 am-12:08 pm

1 stop5h 28m

$78

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sun 4/27

6:00 am-8:05 am

Nonstop2h 05m

$79

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 5/24

1:05 pm-6:31 pm

1 stop5h 26m

$80

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 16 results

Compare providers for flights from San Francisco to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Seattle in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
Trip.com	Price Accuracy1 star	Trust Score*3 stars
Kiwi.com	Price Accuracy3 stars	Trust Score*2 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Cheapfaremart	Price Accuracy-	Trust Score*3 stars
CheapTicketsDeal	Price Accuracy3 stars	Trust Score*3 stars
CheapOair	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Francisco-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Francisco-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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 86 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 July is currently the most expensive (average of $411). 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 evening. If you’re flexible enough to do this you can expect to save up to 22% 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. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Francisco to Seattle

The most flights from SFO to SEA are scheduled on a Thursday (89 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).

Rainfall in Seattle by month

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.

Temperature in Seattle 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 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).

Reviews of airlines servicing Seattle

Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from San Francisco to Seattle to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest

8.1

Very good

4,274 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines

8.0

Very good

9,798 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta

8.0

Very good

7,897 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines

7.9

Good

2,336 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines

7.4

Good

8,603 reviews

Southwest

8.1

Very good

4,274 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 45 daily flights to Seattle from 8 different airlines. 2h 04m 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, 123 users have taken a look at flights from San Francisco to Seattle/Tacoma Intl.
What are the cheapest airlines flying from San Francisco to Seattle round-trip?
Our cheapest airline available from San Francisco to Seattle is Alaska Airlines. Our recent data shows that you can find tickets from as low as $156 on this airline. Additional options worth looking into are Hawaiian Airlines and Delta, starting at $158 and $162 round-trip. Alaska Airlines is currently priced 36% 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 Alaska Airlines, which is currently one of the cheapest options available, starting at $78. Delta flights start at $79 while deals on American Airlines start at $80 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: Horizon Air (100%), Aeromexico (97%), Copa Airlines( 92%).
What are the cheapest flights from San Francisco to Seattle?
While on average a flight from San Francisco to Seattle is generally $1,144, our data shows the cheapest flight currently is $74. When looking at the most popular route, (San Francisco - Seattle/Tacoma Intl), you can expect to pay $131 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 July is currently the most expensive (average of $411). 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.

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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$128	FlexibilityNo cancel fee	On-time65%
Frontier	Cheapest$100	Average$205	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$115	Average$208	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$128	Average$262	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$136	Average$273	FlexibilityNo cancel fee	On-time75%
Hawaiian Airlines	Cheapest$138	Average$242	FlexibilityNo cancel fee	On-time85%
American Airlines	Cheapest$226	Average$461	FlexibilityNo cancel fee	On-time71%

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$78+ 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 4/29. 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 86 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from San Francisco to Seattle

Most accurate provider

Most trusted provider

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 March 28, 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 March 28, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from San Francisco to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Seattle in March.

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?

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 March 21, 2025.

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?

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 March 28, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Seattle. Price data was last updated on March 23, 2025.

Weekly flight availability from San Francisco to Seattle

Rainfall in Seattle by month

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

Temperature in Seattle by month

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

Reviews of airlines servicing Seattle

Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from San Francisco to Seattle to help guide your decision. 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?

How popular is this San Francisco to Seattle flight route?

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?

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

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?

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

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

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

Traveling to a place near San Francisco?

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Alternative routes for San Francisco to Seattle

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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 March 28, 2025.