Cheap flights from San Francisco to Seattle

Round-trip
Economy
San Francisco (SFO)
Seattle (SEA)
Depart
Return
Any month
Compare vs. Cheapflights |

The best prices from San Francisco to Seattle/Tacoma Intl are usually found in February or October, booked 26 days in advance, depart on a Wednesday or Monday and return on a Tuesday

How to find the cheapest flight from
San Francisco (SFO) to Seattle (SEA)

All the information you need to plan the best SFO to SEA flight in 2021: compare San Francisco to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
SFO - SEA
Price
C$ 188 - C$ 254

Popular in

December

High demand for flights, 18% potential price rise

Cheapest in

February

Best time to find cheap flights, 10% potential price drop

Round-trip from

C$ 188

From San Francisco to Seattle/Tacoma Intl

One-way from

C$ 91

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

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from San Francisco to Seattle?

Thursday is generally a great day to depart. Flying on this day could help you save up to 44%.

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

To save on the cost of your flight from San Francisco to Seattle, book at least 27 days before your planned departure. Booking around this time can save you about 178% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 341 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 558.

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

February is one of the best times of the year to fly to Seattle from San Francisco. Prices for February average C$ 209 per person but you can even find prices for as low as C$ 133. The most expensive prices can be found in the month of December. Opting for a February flight can save you 21% on your journey compared to booking in February

When is the cheapest time to fly from San Francisco to Seattle (SFO - SEA)?

It’s typically best to fly out from San Francisco to Seattle in the evening. Doing so could potentially save you 63% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap flights from San Francisco to Seattle in September, October 2021

The best prices found for SFO to SEA flights for September, October
11 Oct - 11 Oct
C$ 143pp
SFO
San Francisco
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
SFO
San Francisco
14 Oct - 18 Oct
C$ 149pp
SFO
San Francisco
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
SFO
San Francisco
29 Oct - 1 Nov
C$ 152pp
SFO
San Francisco
Multiple Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
SFO
San Francisco

San Francisco to Seattle 2021 flight deals

Cheap flights to Seattle from San Francisco found for this year
5 Dec - 5 Dec
C$ 143pp
SFO
San Francisco
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
SFO
San Francisco
14 Oct - 18 Oct
C$ 149pp
SFO
San Francisco
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
SFO
San Francisco
29 Oct - 1 Nov
C$ 152pp
SFO
San Francisco
Multiple Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Multiple Airlines
 
1 STOP
SFO
San Francisco

Direct flights to Seattle from San Francisco

Save time with San Francisco to Seattle direct flight deals
5 Dec - 5 Dec
C$ 143pp
SFO
San Francisco
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
SFO
San Francisco
14 Oct - 18 Oct
C$ 149pp
SFO
San Francisco
Alaska Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
SFO
San Francisco
19 Nov - 30 Nov
C$ 162pp
SFO
San Francisco
Delta
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
Direct
SFO
San Francisco

Last minute flights from San Francisco to Seattle

Late deals on round-trip flights to Seattle from San Francisco, departing today and this week
24 Sep - 5 Oct
C$ 243pp
SFO
San Francisco
Alaska Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Alaska Airlines
Direct
SFO
San Francisco
29 Sep - 6 Oct
C$ 251pp
SFO
San Francisco
Delta
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
Direct
SFO
San Francisco
24 Sep - 1 Oct
C$ 277pp
SFO
San Francisco
Delta
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
Direct
SFO
San Francisco

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

The cheapest one-way flights from San Francisco to Seattle
7:27 a.m. - 7:53 p.m.
Frontier
1 stop
12h 26m
SFO - SEA
Frontier
C$ 91
Kiwi.com
10:40 a.m. - 12:50 p.m.
Delta
Direct
2h 10m
SFO - SEA
Delta
C$ 203
Delta
10:30 a.m. - 6:31 p.m.
Alaska Airlines
2 stops
8h 01m
SFO - SEA
Alaska Airlines
C$ 204

Related info for your journey

Useful info, stats and facts about <span class="emphasized">San Francisco</span> to <span class="emphasized">Seattle</span> flights.

Flight FAQs

From San Francisco to Seattle

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

Booking a flight from San Francisco (SFO) to Seattle/Tacoma Intl (SEA) is your only option if you wish to fly from San Francisco to Seattle. On a typical day, there are 45 flights from San Francisco to Seattle/Tacoma Intl, all of which are around 2h 16m for a nonstop flight. You can also purchase a plane ticket from 3 airlines when you book a flight from San Francisco to Seattle.

Which airlines flying from San Francisco to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Some of the carriers operating flights from San Francisco to Seattle/Tacoma Intl that may be offering flexible cancellation policies are Alaska Airlines, United Airlines, and Delta. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from San Francisco to Seattle for under C$ 200 on Cheapflights?

Yes, there are multiple flights from San Francisco to Seattle for under C$ 200. The cheapest flight booked recently is on Alaska Airlines for just C$ 143, but on average you can expect to pay C$ 181.

Are there direct flights from San Francisco to Seattle for under C$ 200 on Cheapflights?

Cheapflights has 20 direct flights from San Francisco to Seattle under C$ 200. A good price for a direct flight from San Francisco to Seattle is less than C$ 228.

Are there last-minute flights available from San Francisco to Seattle for under C$ 300?

There are currently 20+ open flights from San Francisco to Seattle within the next 7 days for less than C$ 300.

What days are direct flights available from San Francisco to Seattle?

Direct flights are available for this route on the following days: Sunday, Monday, Tuesday, Wednesday, Friday.

How popular is this San Francisco to Seattle flight route?

This flight path from San Francisco to Seattle/Tacoma Intl was viewed by 34 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How many flights depart from San Francisco to Seattle on average per day?

10 flight departures from San Francisco to Seattle per day on average.
Morning (6am - Midday) - 50% of flight departures
Afternoon (Noon - 6pm) - 20% of flight departures
Evening (6pm - Midnight) - 30% of flight departures

How long is the flight from San Francisco to Seattle?

For as low as C$ 143, Alaska Airlines can have you in Seattle from San Francisco in 2h 16m. The distance between San Francisco and Seattle is about 1099 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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 C$ 143 on this airline. Additional options worth looking into are Delta and United Airlines, starting at C$ 162 and C$ 172 round-trip. Alaska Airlines is priced at 31% lower than the current average price of a flight leaving 3 months from now.

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

One-way options have recently been found by users for as low as C$ 75 on Delta. Other airlines that offer cheap prices include Frontier from C$ 91 and Alaska Airlines from C$ 101 one-way.

Related searches

Flights to Seattle (SEA) from San Francisco (SFO)
Flights to San Francisco Flights to Seattle

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COVID Restrictions

View COVID Travel Restrictions for Seattle (SEA)

Do I need a COVID test to fly to Seattle from San Francisco?

Information is based on travel restrictions for travel to Seattle/Tacoma Intl within the United States

Most visitors from San Francisco need to provide a negative COVID-19 test result and/or quarantine to enter Seattle/Tacoma Intl.

COVID-19 testing requirements
Visitors from San Francisco must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from San Francisco are not required to quarantine after entering Seattle/Tacoma Intl.

Do I need a test to fly back to San Francisco from Seattle?

Returning to San Francisco from Seattle/Tacoma Intl

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to San Francisco.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering San Francisco.

Hide COVID Travel Restrictions for Seattle (SEA)

Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from San Francisco to Seattle.
Flight duration from SFO to SEA
2h 15m

Airports servicing San Francisco

Airports servicing Seattle

Hourly flight availability from San Francisco to Seattle

See what time of day planes typically take off from San Francisco towards Seattle.
Afternoon Noon to 6 PM 57% of flight departures
Morning 6 AM to noon 28% of flight departures
Early morning Midnight to 6 AM 8% of flight departures
Evening 6 PM to midnight 7% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from San Francisco to Seattle
See how many times per day planes take to the skies headed from San Francisco to Seattle.
Sunday
54 daily flights
Monday
39 daily flights
Tuesday
39 daily flights
Wednesday
44 daily flights
Thursday
44 daily flights
Friday
54 daily flights
Saturday
46 daily flights
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