How popular is this San Francisco to Seattle flight route?

Within the past month, 128 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 Hawaiian Airlines. Our recent data shows that you can find tickets from as low as $148 on this airline. Additional options worth looking into are Alaska Airlines and Delta, starting at $151 and $157 round-trip. Hawaiian Airlines is currently priced 38% 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 Hawaiian Airlines, which is currently one of the cheapest options available, starting at $77. Alaska Airlines flights start at $88 while deals on Southwest start at $89 one-way.

What are the cheapest flights from San Francisco to Seattle?

While on average a flight from San Francisco to Seattle is generally $1,052, our data shows the cheapest flight currently is $65. When looking at the most popular route, (San Francisco - Seattle/Tacoma Intl), you can expect to pay $148 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%), WestJet (97%), Aeromexico( 93%).

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 43% 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 192% 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 July. For low rates, October can be a great choice for travel to Seattle. Flights to Seattle from San Francisco in October are about $240 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 59 daily flights to Seattle from 8 different airlines. 2h 05m 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

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

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 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	$148 (Kiwi.com)
One-way from	$77 (Trip.com)
Popular in	July
Cheapest in	October
Average price	$274
Good round-trip deal	$222 or less
Good one-way deal	$139 or less

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. 13% potential increase in price ($37 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

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

Search Deals

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 June 12, 2025.

Thu 8/78:49 pmSFO - SEA

Nonstop2h 13mHawaiian Airlines

Mon 8/118:26 pmSEA - SFO

Nonstop2h 14mHawaiian Airlines

Deal found 6/12

$148

Tue 8/56:00 amSFO - SEA

Nonstop2h 04mAlaska Airlines

Tue 8/511:31 amSEA - SFO

Nonstop2h 14mAlaska Airlines

Deal found 6/11

$151

Mon 8/48:55 pmSFO - SEA

Nonstop2h 20mDelta

Thu 8/710:05 pmSEA - SFO

Nonstop2h 14mDelta

Deal found 6/9

$157

Tue 9/165:25 pmSFO - SEA

1 stop5h 25mSouthwest

Fri 9/264:20 pmSEA - SFO

1 stop6h 50mSouthwest

Deal found 6/10

$177

Thu 7/105:45 amSFO - SEA

1 stop8h 21mFrontier

Fri 7/183:11 pmSEA - SFO

1 stop6h 10mFrontier

Deal found 6/11

$210

Fri 7/46:40 pmSFO - SEA

Nonstop2h 16mUnited Airlines

Tue 7/85:10 amSEA - SFO

Nonstop2h 12mUnited Airlines

Deal found 6/11

$237

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 June 12, 2025.

Thu 8/78:49 pmSFO - SEA

Nonstop2h 13mHawaiian Airlines

Mon 8/118:26 pmSEA - SFO

Nonstop2h 14mHawaiian Airlines

Deal found 6/12

$148

Tue 8/56:00 amSFO - SEA

Nonstop2h 04mAlaska Airlines

Tue 8/511:31 amSEA - SFO

Nonstop2h 14mAlaska Airlines

Deal found 6/11

$151

Mon 8/45:55 amSFO - SEA

Nonstop2h 10mDelta

Mon 8/119:31 pmSEA - SFO

Nonstop2h 12mDelta

Deal found 6/9

$157

Tue 9/165:25 pmSFO - SEA

1 stop5h 25mSouthwest

Fri 9/264:20 pmSEA - SFO

1 stop6h 50mSouthwest

Deal found 6/10

$177

Thu 7/105:45 amSFO - SEA

1 stop8h 21mFrontier

Fri 7/183:11 pmSEA - SFO

1 stop6h 10mFrontier

Deal found 6/11

$210

Fri 7/46:40 pmSFO - SEA

Nonstop2h 16mUnited Airlines

Tue 7/85:10 amSEA - SFO

Nonstop2h 12mUnited Airlines

Deal found 6/11

$237

Last-minute flights from San Francisco to Seattle
Discover last-minute flight deals from San Francisco to Seattle. Data last updated June 12, 2025 and is based on user searches.

Tue 6/178:49 pmSFO - SEA

Nonstop2h 13mAlaska Airlines

Tue 6/247:05 pmSEA - SFO

Nonstop2h 18mAlaska Airlines

Deal found 6/10

$261

Tue 6/177:45 pmSFO - SEA

1 stop4h 45mSouthwest

Wed 6/256:05 pmSEA - SFO

1 stop5h 05mSouthwest

Deal found 6/11

$332

Tue 6/178:40 amSFO - SEA

1 stop5h 21mUnited Airlines

Wed 6/255:05 amSEA - SFO

Nonstop2h 12mUnited Airlines

Deal found 6/11

$357

Tue 6/177:00 amSFO - SEA

Nonstop2h 05mHawaiian Airlines

Tue 6/1711:31 amSEA - SFO

Nonstop2h 14mHawaiian Airlines

Deal found 6/10

$371

Wed 6/189:15 amSFO - SEA

Nonstop2h 11mMultiple Airlines

Wed 6/255:59 pmSEA - SFO

Nonstop2h 16mMultiple Airlines

Deal found 6/10

$259

Wed 6/188:55 amSFO - SEA

1 stop5h 50mDelta

Mon 8/119:31 pmSEA - SFO

Nonstop2h 12mDelta

Deal found 6/10

$277

Wed 6/186:15 amSFO - SEA

1 stop7h 54mAmerican Airlines

Mon 8/116:30 amSEA - SFO

1 stop6h 26mAmerican Airlines

Deal found 6/12

$412

Sun 6/2210:11 pmSFO - SEA

1 stop14h 38mFrontier

Wed 7/26:25 amSEA - SFO

1 stop17h 09mFrontier

Deal found 6/10

$270

Fri 7/46:40 pmSFO - SEA

Nonstop2h 16mUnited Airlines

Tue 7/85:10 amSEA - SFO

Nonstop2h 12mUnited Airlines

Deal found 6/11

$237

Sat 7/51:36 pmSFO - SEA

1 stop3h 44mMultiple Airlines

Sat 7/125:25 amSEA - SFO

1 stop3h 24mMultiple Airlines

Deal found 6/11

$226

Thu 7/105:45 amSFO - SEA

1 stop8h 21mFrontier

Mon 7/143:11 pmSEA - SFO

1 stop6h 10mFrontier

Deal found 6/11

$187

Sun 7/206:00 amSFO - SEA

Nonstop2h 04mAlaska Airlines

Mon 8/254:50 pmSEA - SFO

1 stop6h 39mAlaska Airlines

Deal found 6/10

$192

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 June 12, 2025.

Mon 8/47:49 pmSFO - SEA

Nonstop2h 11mHawaiian Airlines

Deal found 6/11

$77

Fri 8/152:00 pmSFO - SEA

1 stop4h 02mAlaska Airlines

Deal found 6/10

$88

Mon 8/47:15 pmSFO - SEA

1 stop5h 15mSouthwest

Deal found 6/9

$89

Sat 8/94:50 pmSFO - SEA

Nonstop2h 10mDelta

Deal found 6/10

$91

Fri 7/1110:11 pmSFO - SEA

1 stop14h 42mFrontier

Deal found 6/11

$124

Sun 7/69:07 amSFO - SEA

1 stop9h 42mAmerican Airlines

Deal found 6/12

$192

Thu 7/310:37 amSFO - SEA

2 stops22h 08mMultiple Airlines

Deal found 6/9

$201

Mon 8/1111:03 pmSFO - SEA

2 stops14h 43mUnited Airlines

Deal found 6/10

$210

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

Thu 8/7

8:49 pm-11:02 pm

Nonstop2h 13m

Seattle/Tacoma Intl

Mon 8/11

8:26 pm-10:40 pm

Nonstop2h 14m

$148

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 8/5

11:25 am-1:37 pm

Nonstop2h 12m

Seattle/Tacoma Intl

Tue 8/5

3:44 pm-5:57 pm

Nonstop2h 13m

$151

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 8/9

8:55 pm-11:15 pm

Nonstop2h 20m

Seattle/Tacoma Intl

Thu 8/21

7:28 am-9:51 am

Nonstop2h 23m

$169

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Tue 9/16

5:25 pm-10:50 pm

1 stop5h 25m

Seattle/Tacoma Intl

Fri 9/26

4:20 pm-11:10 pm

1 stop6h 50m

$177

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 8/2

10:55 pm-12:59 am

Nonstop2h 04m

Seattle/Tacoma Intl

Mon 8/4

5:10 am-7:22 am

Nonstop2h 12m

$182

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Thu 7/10

5:45 am-2:06 pm

1 stop8h 21m

Seattle/Tacoma Intl

Fri 7/18

3:11 pm-9:21 pm

1 stop6h 10m

$210

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Fri 10/3

6:00 am-8:07 am

Nonstop2h 07m

$69

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 8/4

7:49 pm-10:00 pm

Nonstop2h 11m

$77

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Mon 8/4

7:15 pm-12:30 am

1 stop5h 15m

$89

San FranciscoSeattle

SFO - SEA

SFOSEA

San Francisco

Sat 8/9

4:50 pm-7:00 pm

Nonstop2h 10m

$91

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 14 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

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 53 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 $391). 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 23% on your trip compared to booking a flight in the morning.

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.

Weekly flight availability from San Francisco to Seattle

The most flights from SFO to SEA are scheduled on a Thursday (110 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (32 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 Alaska Airlines, Southwest 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.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Southwest

8.0

Very good

4,287 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,950 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines

7.9

Good

2,494 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,790 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 59 daily flights to Seattle from 8 different airlines. 2h 05m 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, 128 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 Hawaiian Airlines. Our recent data shows that you can find tickets from as low as $148 on this airline. Additional options worth looking into are Alaska Airlines and Delta, starting at $151 and $157 round-trip. Hawaiian Airlines is currently priced 38% 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 Hawaiian Airlines, which is currently one of the cheapest options available, starting at $77. Alaska Airlines flights start at $88 while deals on Southwest start at $89 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%), WestJet (97%), Aeromexico( 93%).
What are the cheapest flights from San Francisco to Seattle?
While on average a flight from San Francisco to Seattle is generally $1,052, our data shows the cheapest flight currently is $65. When looking at the most popular route, (San Francisco - Seattle/Tacoma Intl), you can expect to pay $148 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 $391). 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

SeaTac

Tukwila

Tacoma

Lakewood

Ocean Shores

Lacey

Leavenworth

Federal Way

Lynnwood

Olympia

Shoreline

Kent

Cle Elum

Centralia

Kirkland

Aberdeen

Renton

Shelton

Silverdale

Issaquah

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for San Francisco to Seattle

Los Angeles to Seattle flights

Ontario to Seattle flights

Santa Ana to Seattle flights

San Jose to Seattle flights

Los Angeles to Portland flights

San Diego to Seattle flights

Oakland to Seattle flights

Burbank to Seattle flights

San Francisco to Portland flights

Sacramento to Seattle flights

Las Vegas to Seattle flights

Santa Ana to Portland flights

Burbank to Portland flights

Ontario to Portland flights

San Francisco to Everett flights

Los Angeles to Everett flights

San Jose to Portland flights

San Diego to Portland flights

Las Vegas to Everett flights

San Diego to Everett flights

Sacramento to Portland flights

Santa Rosa to Seattle flights

Santa Ana to Everett flights

Fresno to Seattle flights

Long Beach to Seattle flights

Palm Springs to Seattle flights

Los Angeles to Spokane flights

Monterey to Seattle flights

Oakland to Portland flights

Reno to Seattle flights

San Luis Obispo to Seattle flights

Santa Rosa to Portland flights

Santa Barbara to Seattle flights

Fresno to Portland flights

Palm Springs to Portland flights

San Francisco to Spokane flights

Las Vegas to Portland flights

San Diego to Spokane flights

San Jose to Everett flights

Reno to Portland flights

Ontario to Spokane flights

Medford to Seattle flights

Santa Barbara to Portland flights

San Luis Obispo to Portland flights

Long Beach to Portland flights

Sacramento to Spokane flights

San Francisco to Pasco flights

Stockton to Seattle flights

Las Vegas to Spokane flights

Complete your trip

Seattle car rentals

Seattle/Tacoma Intl Airport car rentals

Kenmore Air Harbor Airport car rentals

Yakima car rentals

Spokane car rentals

Bellingham car rentals

Pasco car rentals

Walla Walla car rentals

Wenatchee car rentals

Downtown car rentals

Capitol Hill car rentals

West Seattle car rentals

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$101	Average$217	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$115	Average$197	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$127	Average$256	FlexibilityNo cancel fee	On-time69%
Hawaiian Airlines	Cheapest$133	Average$253	FlexibilityNo cancel fee	On-time85%
Alaska Airlines	Cheapest$136	Average$260	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$226	Average$428	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$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 10/3. 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 June 12, 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 June 12, 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?

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 June 9, 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 June 12, 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 June 8, 2025.

Weekly flight availability from San Francisco to Seattle

Explore weekly flight availability from San Francisco to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

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 Alaska Airlines, Southwest 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?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Francisco to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from San Francisco to Seattle

100% Free

Book with Flexibility

Travel Smart

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 June 12, 2025.