SEA - SFO

$79 Find Cheap Flights from Seattle to San Francisco - Compare and Save

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Everything you should know

Cheapest round-trip
$137
Typical prices: $188-$367
Frontier
Sat 11/3Sat 11/10
SEA - SFO • 1 stop
Cheapest non-stop
$138
Typical prices: $187-$367
Alaska Airlines
Sat 10/20Sat 10/27
SEA - SFO • Non-stop
Nonstop flights
You can fly direct with Alaska Airlines, United Airlines and Delta. Average duration is 2h 19m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 100% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 8 weeks in advance save around 61% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 31% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $266 (round-trip)
Shortest trip • 5h 26m (one-way)
Insights
Insights
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We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to San Francisco

Tue, Nov 3 - Tue, Nov 10
Frontier Logo
8:09 pm - 8:32 pmSEA  Seattle/Tacoma Intl-SFO San Francisco
24h 23m1 stop Los Angeles
Frontier Logo
12:20 pm - 3:12 pmSFO  San Francisco-SEA Seattle/Tacoma Intl
26h 52m1 stop Denver Intl
$137Frontier
Tue, Oct 20 - Tue, Oct 27
Alaska Airlines Logo
9:59 am - 12:26 pmSEA  Seattle/Tacoma Intl-SFO San Francisco
2h 27mnonstop
Alaska Airlines Logo
5:45 pm - 7:56 pmSFO  San Francisco-SEA Seattle/Tacoma Intl
2h 11mnonstop
$138Alaska Airlines
Mon, Oct 19 - Sat, Oct 24
Alaska Airlines Logo
9:36 pm - 11:52 pmSEA  Seattle/Tacoma Intl-SFO San Francisco
2h 16mnonstop
Alaska Airlines Logo
5:45 pm - 7:56 pmSFO  San Francisco-SEA Seattle/Tacoma Intl
2h 11mnonstop
$141Alaska Airlines
Wed, Nov 11 - Wed, Nov 18
Frontier Logo
8:09 pm - 10:11 amSEA  Seattle/Tacoma Intl-SFO San Francisco
14h 02m1 stop Los Angeles
Frontier Logo
6:02 am - 3:12 pmSFO  San Francisco-SEA Seattle/Tacoma Intl
9h 10m1 stop Denver Intl
$142Frontier
Tue, Nov 3 - Tue, Nov 10
Multiple Airlines Logo
8:09 pm - 8:32 pmSEA  Seattle/Tacoma Intl-SFO San Francisco
24h 23m1 stop Los Angeles
Multiple Airlines Logo
12:13 pm - 2:28 pmSFO  San Francisco-SEA Seattle/Tacoma Intl
2h 15mnonstop
$144Multiple Airlines
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
4:27 pm - 12:15 amSEA  Seattle/Tacoma Intl-SFO San Francisco
7h 48m1 stop Denver Intl
Multiple Airlines Logo
7:11 pm - 9:25 pmSFO  San Francisco-SEA Seattle/Tacoma Intl
2h 14mnonstop
$147Multiple Airlines
Tue, Oct 27 - Sat, Oct 31
Delta Logo
2:45 pm - 5:05 pmSEA  Seattle/Tacoma Intl-SFO San Francisco
2h 20mnonstop
Delta Logo
10:35 am - 12:57 pmSFO  San Francisco-SEA Seattle/Tacoma Intl
2h 22mnonstop
$156Delta
Sat, Oct 24 - Tue, Oct 27
United Airlines Logo
10:44 am - 1:15 pmSEA  Seattle/Tacoma Intl-SFO San Francisco
2h 31mnonstop
United Airlines Logo
4:10 pm - 6:26 pmSFO  San Francisco-SEA Seattle/Tacoma Intl
2h 16mnonstop
$157United Airlines
Thu, Nov 5 - Mon, Nov 9
United Airlines Logo
7:00 am - 9:19 amSEA  Seattle/Tacoma Intl-SFO San Francisco
2h 19mnonstop
United Airlines Logo
2:10 pm - 4:27 pmSFO  San Francisco-SEA Seattle/Tacoma Intl
2h 17mnonstop
$157United Airlines
Sat, Oct 10 - Mon, Oct 12
Delta Logo
9:35 pm - 11:56 pmSEA  Seattle/Tacoma Intl-SFO San Francisco
2h 21mnonstop
Delta Logo
6:20 am - 8:41 amSFO  San Francisco-SEA Seattle/Tacoma Intl
2h 21mnonstop
$157Delta
Booking Insights

Price, demand and travel trends for Seattle to San Francisco flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Seattle to San Francisco?

Round-trip flights from Seattle to San Francisco typically range from $188 to $367. The lowest price found in the past 5 days was $137, on Frontier.

What's the cheapest day of the week to fly from Seattle to San Francisco?

Based on deals KAYAK users found in the last 12 months, Saturday is the cheapest day of the week to fly from Seattle to San Francisco. It’s 9% cheaper than the average day, while Monday is the most expensive, with prices 20% higher.

What’s the cheapest month to fly from Seattle to San Francisco?

•January is the cheapest month to fly from Seattle to San Francisco at $183 round-trip.
•June ($296) and July ($286) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 61% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seattle to San Francisco the cheapest?

Flights from Seattle to San Francisco are cheapest 8 weeks before departure. Booking in this window typically costs about 61% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Seattle to San Francisco

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on ANA

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Chris Dong

Chris Dong

Expert on Singapore Airlines

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Key details for Seattle to San Francisco flights

Low season

September

Cheapest flight

$79
Beat the crowds with an average 33% drop in travelers.
The most popular month to fly with an average 18% increase in travelers.
One-way flight from Seattle to San Francisco

When to book flights from Seattle to San Francisco

Are your dates flexible? Find out the best times to travel from Seattle to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to San Francisco flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Seattle to San Francisco?

    These are the earliest and latest flight times available from Seattle to San Francisco:

    • Earliest: departs at 5:00 am and lands at 7:19 am
    • Latest: departs at 9:40 pm and lands at 11:59 pm.

    The flight takes about 2h 19m.

  • What cabin classes can I book on flights from Seattle to San Francisco?

    Four cabin classes are available on flights from Seattle to San Francisco:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How long is a flight from Seattle to San Francisco?

    A nonstop flight from Seattle to San Francisco takes 2h 19m, covering 679 miles.

  • Do I need a passport to fly from Seattle to San Francisco?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Seattle to San Francisco flight?

    Round-trip flights from Seattle to San Francisco range from $188 to $367, with an average of $264 over the past 12 months. Anything below $188 counts as a good deal.

  • How expensive are last-minute Seattle to San Francisco flights?

    Last-minute fares on this route (booked within two weeks of departure) run 75% above the $264 route average. Book 8 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Seattle to San Francisco?

    On this route, nonstop and layover fares are close on average, with nonstop at $264 round-trip and layover options via Denver Intl (DEN) at $266.

  • How does on-time performance compare across airlines flying from Seattle to San Francisco?

    Southwest is slightly above the route average for timely arrivals, while Delta has a lower on-time arrival rate. On-time arrival rates on Seattle to San Francisco flights are:

    • Southwest: 100% on time
    • Delta: 73% on time
    • United Airlines: 71% on time

    Overall, flights on this route are punctual 69% of the time on average.

  • What is the standard checked-bag allowance on flights from Seattle to San Francisco?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Seattle to San Francisco?

    The Airbus A320-100/200 family is used most often on this route, operated mainly by United Airlines. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

  • How are flight departures from Seattle to San Francisco spread across the day?

    Morning is the busiest departure period on Seattle to San Francisco flights, with 40% of flights leaving in that window. Evening departures account for 30%, afternoon flights for 25%, and night flights for 5%.

  • Have flight prices from Seattle to San Francisco changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $137 to $1,193. That means the highest observed fare was about 9x higher than the lowest one.

  • Which airlines offer Wi-Fi on Seattle to San Francisco flights?

    Three airlines offer in-flight Wi-Fi on Seattle to San Francisco flights:

    • Alaska Airlines
    • Delta
    • JetBlue

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

  • How are flight prices from Seattle to San Francisco looking right now?

    One-way fares from Seattle to San Francisco are currently lower than usual. Average one-way flight prices are about $80, which is 58% below the typical average for this route.

  • What car rental options are available at San Francisco Airport (SFO)?

    San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around $15 for economy cars. Top options include:

    • Thrifty
    • Europcar
    • Dollar
    • Hertz
    • Fox

  • Which airports can I use when flying from Seattle to San Francisco?

    Flights from Seattle to San Francisco usually depart from Seattle/Tacoma Intl (SEA) and arrive at San Francisco (SFO).

  • What time of day has the fewest delays on flights from Seattle to San Francisco?

    Night flights have the fewest delays on this route, while evening departures tend to have the most.

  • At what point is a flight considered delayed from Seattle to San Francisco?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Seattle to San Francisco route, 31% of flights were delayed in the past 3 months, with delays averaging 1h 35m.

  • Which airports do connecting flights from Seattle to San Francisco pass through?

    One-stop flights from Seattle to San Francisco most commonly connect through:

    • Denver Intl (DEN) - 38% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 38% of one-stop connections
    • Salt Lake City (SLC) - 14% of one-stop connections
    • Ontario (ONT) - 10% of one-stop connections

  • Can I save money by using flexible dates for flights from Seattle to San Francisco?

    Yes. Flexible dates can save you up to 24% on flights from Seattle to San Francisco. Saturday is the cheapest departure day at $242 round-trip on average, while Monday is the most expensive at $318, a difference of $76.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What airlines fly from Seattle to San Francisco?

    3 airlines operate flights between Seattle and San Francisco. The airlines offering nonstop flights on this route include:

    • Alaska Airlines
    • United Airlines
    • Delta

  • How much time can I save by choosing a different layover airport from Seattle to San Francisco?

    Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 5h 26m, compared with 11h 57m via Ontario (ONT) and 13h 35m via Las Vegas Harry Reid Intl (LAS).

  • What popular places can I visit in San Francisco?

    Some of the most popular sights in San Francisco are Fisherman's Wharf, Union Square and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Seattle to San Francisco flights?

    Among airlines operating Seattle to San Francisco flights:

    • Alaska Airlines: offers extra legroom; offers free seat selection
    • United Airlines: offers extra legroom; offers free seat selection
    • Delta: offers extra legroom; offers free seat selection
    • American Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Seattle to San Francisco flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Alaska Airlines: a cabin bag and a checked bag in Economy Class
    • United Airlines: a cabin bag and a checked bag in Economy Class
    • Delta: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

  • What is the quickest way from San Francisco International Airport to downtown San Francisco?

    Aside from driving or renting a car, BART is the quickest way to reach downtown San Francisco from SFO. The airport's BART station is on the Departures/Ticketing Level of the International Terminal on the G Gates side. It can be reached from the other terminals via AirTrain.

  • Should I fly to San Francisco International Airport, Oakland International Airport, or San José International Airport?

    San Francisco International Airport (SFO) and Oakland International Airport (OAK) are both connected to Bay Area Rapid Transit (BART), which gives travelers a public transportation option after flights from Seattle to San Francisco. The main difference between them is location: SFO is on the west side of San Francisco Bay, while OAK is on the east side. San José International Airport (SJC) is not connected to BART, though other public transportation options are available. A main reason to fly into SJC is for a final destination outside the Bay Area, since the airport is in the heart of Silicon Valley, just 3 miles from downtown San José.

  • What is one way to travel out of SFO?

    BART (Bay Area Rapid Transit) runs directly from SFO to downtown San Francisco. It also connects SFO with Oakland and other parts of the Bay Area. Taking BART avoids the road congestion common during Bay Area peak hours. Schedules and timed transfers are available through the transit system.

  • Can I rent a car at San Francisco International Airport?

    Yes, rental cars are available at SFO. The SFO Rental Car Center can be reached on the AirTrain Blue Line from any terminal.

  • Does Seattle-Tacoma International Airport provide support for travelers with disabilities?

    Yes, SEA offers accessible facilities for travelers with disabilities. Airlines coordinate wheelchair service from the ticketing desk to the departures area. Wheelchair-accessible taxis and vans are also available. Curbside pickup can be requested on Skybridge 5 and the Baggage Claim level.

  • What facilities are available for business travelers at San Francisco International Airport?

    SFO has a business center and workstations throughout the terminals. Travelers can plug in laptops and continue working at the airport.

Your guide to booking Seattle to San Francisco flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Saturday departure and avoid flying on Monday. On this route, Saturday flights average $242, about $76 less than Monday fares (24% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 8 weeks before you fly. On this route, that window historically saves about 61% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to San Francisco trip for January. Fares historically average $183 round-trip in that month - typically $113 less than the most expensive month, which is June (based on the last 12 months).
  • For the best chance of arriving on time, fly with Southwest. Over the past three months, 100% of Southwest flights from Seattle to San Francisco arrived on time, slightly above the route average of 69%. When flights on this route arrive late, they're delayed by an average of 1h 35m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Francisco Airport.

    • Grand Hyatt At Sfo
  • If you'd rather skip renting a car, take Link Light Rail to Seattle-Tacoma International Airport. It connects the airport directly with downtown Seattle and the University of Washington. The station is outside the airport on the fourth floor of the adjacent parking garage.
  • Take the AirTrain Blue Line from any terminal to reach San Francisco International Airport’s Rental Car Center. It runs 24 hours a day and also connects the terminals with the airport’s parking garages and the BART station.
  • When booking a flight from SEA to San Francisco, compare the numerous domestic airlines on the route. You'll land at San Francisco International Airport (SFO), a major gateway to California, so you can start exploring San Francisco right away.

Prefer to fly direct from Seattle to San Francisco?

 
Find which airlines fly direct from Seattle/Tacoma Intl Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to San Francisco

Monday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Wednesday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Thursday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

See more direct flights

Direct returns

San Francisco to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Tuesday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Wednesday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Thursday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Friday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Saturday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

Sunday

Alaska Airlines,Delta,United Airlines

Alaska Airlines,Delta, +1 more

See more direct flights

More options for your flight from Seattle to San Francisco

Complete your trip to San Francisco with a hotel stay or car rental