Flights from Seattle to San Francisco
North AmericaYear-round

Cheap Flights from Seattle to San Francisco

Track economy fares on the SEASFO route and get alerts when prices drop.

From
Seattle
SEA
To
San Francisco
SFO

Route Intelligence: SeattleSan Francisco

Flight Duration

2 hr 30 min (Direct)

Price Guidance

A good deal is under $120 roundtrip. Standard fare is $200-$300+.

Peak Season

June to August

Top Airlines

Alaska Airlines, United Airlines, Southwest Airlines

Booking Tip

Book 2-4 weeks in advance for the best fares on this short-haul route. Traveling Tuesday through Thursday can save 10-20% compared to weekend flights.

Track SeattleSan Francisco Fares

Set your target price and FlightKitten will scan this route twice daily. The instant economy fares drop below your budget, you'll get an email with the price, airline, and a direct booking link.

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Flying Business Class?

If you're considering business class on this route, BusinessClassSignal.com is a dedicated tool that tracks premium cabin fares. They alert you when business & first class prices drop — worth checking out if you fly up front.

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Other Routes to San Francisco

More Destinations in North America

Route Briefing: Seattle to San Francisco

Seattle and San Francisco are two of the West Coast's most distinctive cities, and the fact that you can be sipping coffee in Capitol Hill and walking the streets of the Mission District just two and a half hours later makes this one of the most satisfying short-haul routes in the country. Alaska Airlines, United, and Southwest all fly this corridor regularly, keeping competition healthy and fares reasonable. If you catch a good deal, you're looking at under $120 roundtrip — which, frankly, is less than a nice dinner in either city.

San Francisco rewards visitors who come ready to explore on foot and by neighborhood. The city is really a collection of distinct villages stitched together, each with its own personality. Chinatown is one of the oldest and most densely populated in North America, and wandering its streets feels genuinely transportive. The Mission District brings vibrant murals and some of the best taquerias you'll find anywhere. North Beach carries the ghost of the Beat Generation in its bookshops and cafes. And then there's the Golden Gate Bridge — yes, it's iconic, but crossing it on foot or by bike on a clear morning is one of those experiences that earns its reputation every single time.

Getting from SFO into the city is straightforward and affordable. BART, the Bay Area's rapid transit system, connects directly from the airport to downtown San Francisco in roughly 30 minutes, making it one of the easiest airport-to-city transfers in any major American metro. Skip the cab line and head for the AirTrain to the BART station.

Timing matters on this route. Summer — June through August — is peak season, when tourists flood in and hotel prices climb accordingly. Counterintuitively, San Francisco summers can be cool and foggy, especially in the mornings. If you want warmth and sunshine, September and October are often the city's most beautiful months, with clearer skies and smaller crowds. That's also when the surrounding wine country in Napa and Sonoma is deep into harvest season, which is worth building a day trip around if you have the time.

For the best fares, book two to four weeks out and aim for Tuesday through Thursday travel — midweek flights on this route can run noticeably cheaper than weekend departures. The route operates year-round, so there's genuinely no bad time to go, just smarter and less smart times to book.

How much are flights from Seattle to San Francisco in 2026?

Flight prices from Seattle (SEA) to San Francisco (SFO) vary significantly depending on the season, day of the week, and how far in advance you book. A good deal is under $120 roundtrip. Standard fare is $200-$300+. Popular carriers on this route include Alaska Airlines, United Airlines, Southwest Airlines. FlightKitten eliminates the guesswork by monitoring 220+ airlines twice daily and alerting you the moment economy fares hit your target price.

How does FlightKitten track Seattle to San Francisco fares?

FlightKitten scans over 220 airlines twice every day for economy fares on the SEA to SFO route. When you set a target price, FlightKitten continuously monitors this route and sends an email alert the moment fares drop below your budget. Each alert includes the exact fare, airline, dates, and an AI-powered briefing that explains whether the deal is genuinely good compared to historical pricing on this route. No more obsessive price checking — set your budget and let FlightKitten do the watching.

Pro tip: Book 2-4 weeks in advance for the best fares on this short-haul route. Traveling Tuesday through Thursday can save 10-20% compared to weekend flights.

Looking for business class deals on this route? We recommend checking out BusinessClassSignal.com — a dedicated premium cabin fare tracker that's worth a look if you fly up front.