Cheap Flights from San Francisco to Seattle

The San Francisco–Seattle corridor is a short, busy, tech-traveler-dominated route. Business demand keeps base fares elevated — but Camli's consolidator network regularly finds below-market pricing even on this competitive Pacific Northwest corridor. Whether you're heading to Seattle for work, the Space Needle, or Pike Place Market, we'll get you there for less.

Best Time to Book San Francisco to Seattle Flights

Cheapest Months to Fly

January, February, and November (outside Thanksgiving week) offer the lowest fares. Summer (June–September) is Seattle's best weather season and also the most expensive. The Pacific Northwest shoulder season — October — is a hidden gem for value and scenery.

Best Days of the Week

Saturday and Sunday are actually cheap on this route — the inverse of most domestic routes — because SFO–SEA is heavily business-driven. Monday and Friday are the most expensive.

Optimal Booking Window

Business travel: Book 2–3 weeks ahead for best availability. Weekend leisure trips: 3–5 weeks ahead. Summer travel: 8–12 weeks ahead.

Tips for Finding Cheap San Francisco to Seattle Flights

1Alaska Airlines Dominates This Route

Alaska Airlines is the home carrier for Seattle and has the most nonstop SFO–SEA flights. Their fares are competitive, and their Mileage Plan is one of the most generous domestic loyalty programs.

2Consider Oakland (OAK)

Oakland Airport (OAK) is 30 minutes from downtown SF by BART and often $30–60 cheaper than SFO on the same dates. Southwest's OAK service is particularly competitive.

3The Friday Problem

Never book a Friday SFO–SEA flight without checking alternatives. Thursday evening and Saturday morning flights on the same weekend trip can save $80–120 per person.

4Seattle–Tacoma (SEA) is the Only Option

Unlike New York or LA, Seattle has one major commercial airport. No airport shopping needed on the arrival side — but do check whether SEA's South Satellite gates apply to your terminal.

Frequently Asked Questions — San Francisco to Seattle Flights

How long is the flight from San Francisco to Seattle?

Nonstop from SFO to SEA takes approximately 2 hours and 15 minutes. It's one of the shorter West Coast hops.

What is the best airline from San Francisco to Seattle?

Alaska Airlines has the most flights and best reliability on this route. For price, Southwest from OAK is often the cheapest. United has the most connections for SFO-based flyers.

Is it worth flying vs. driving from San Francisco to Seattle?

Driving takes approximately 12–14 hours. Flying wins on time, and with Camli's consolidator fares, it often wins on total cost too once gas, food, and lodging are factored in.

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

January, February, and October offer the best fares. Weekend flights (Saturday/Sunday) are unusually cheap on this business-heavy route.

Does Camli offer one-way fares on San Francisco to Seattle?

Yes — Camli books one-way, round-trip, and multi-city itineraries. One-way fares on SFO–SEA can be very competitive.

Cheapest Flights in the USA — Book Cheap Airfare Online

Find the cheapest flights in the USA on Camli. Compare airfare from 200+ airlines, discover hidden consolidator fares up to 70% off, and book in minutes.

Why Camli Finds Cheaper Flights

Camli is an IATA-accredited consolidator that purchases airline seats in bulk at wholesale rates. These fares are not published on metasearch engines like Google Flights or OTAs like Expedia. Our average fare is 47% below published prices across all tracked routes.

How Consolidator Fares Work

Airlines quietly distribute unsold inventory through consolidator networks to fill seats without publicly lowering prices. Camli surfaces these wholesale fares automatically, saving most travelers 40–70% on the same seats with official airline e-tickets.

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Frequently Asked Questions

How does Camli find flights cheaper than Google Flights?: Camli is an IATA-accredited consolidator that purchases airline seats in bulk at wholesale rates. These fares are not published on metasearch engines like Google Flights or OTAs like Expedia.
Are Camli tickets real airline tickets?: Yes. Every ticket booked through Camli is an official airline e-ticket issued directly by the carrier. Your booking appears in the airline's own reservation system.
Is Camli safe to book with?: Camli is operated by Planet Aero LLC, an IATA-accredited travel agency based in Secaucus, NJ. We've sold over 2 million tickets and hold a BBB A+ rating.
What airlines does Camli search?: Camli searches 200+ airlines including Delta, United, American, British Airways, Emirates, Qatar Airways, Lufthansa, Air India, Singapore Airlines, and many more.
How much can I save with Camli?: On average, Camli customers save $480 per booking (47% off published fares). Savings vary by route, airline, and travel dates.

route	San Francisco (SFO / OAK / SJC) → Seattle (SEA)
duration	Approximately 2 hours 15 minutes nonstop
distance	~678 miles
airlines	Alaska, United, Delta, Southwest, American
nonstop	Yes — Alaska and United offer hourly-frequency service
busy Season	Summer (June–September), holiday weekends