Cheapest one-way
$ 374.00
Alaska Airlines · Nonstop
One-way tickets on SFO–SEA recently started around $ 374.00.
Flights from San Francisco to Seattle
Compare San Francisco to Seattle flights on BookingTrolley, where the lowest tracked fare was $ 748.00. Check airlines, nonstop options and the cheapest months to fly.
San Francisco to Seattle flights overview
BookingTrolley's most recent fare data for the San Francisco to Seattle route shows tickets from $ 748.00. Across the months we have sampled, the typical round-trip fare averages about $ 897.00. Nov tends to be the cheapest month to fly (around $ 748.00), while Jun is usually the most expensive at about $ 1,113.00 — a swing of roughly 49%.
SFO and SEA sit roughly 1,093 km apart, so total travel time depends on whether you fly nonstop or connect. BookingTrolley found 4 airlines currently compete on the SFO–SEA corridor, with Alaska Airlines posting one of the lowest fares at $ 748.00. 4 of them offer nonstop options, which save layover time but can cost more than connecting itineraries.
Frequently asked questions about flying from San Francisco to Seattle
Tuesday and Wednesday are typically the cheapest days to fly from San Francisco to Seattle. According to BookingTrolley fare data on the San Francisco to Seattle route (SFO–SEA), round-trip tickets started at $ 748.00. United States travellers often save by shifting 3–4 days around their preferred date on BookingTrolley.
The cheapest airlines on San Francisco to Seattle are Alaska Airlines (from $ 748.00), American Airlines (from $ 785.00), United Airlines (from $ 817.00), according to BookingTrolley's multi-provider comparison priced for the United States market currency when available.
The cheapest flights from San Francisco to Seattle started at $ 748.00 round trip on a nonstop itinerary on Alaska Airlines, per BookingTrolley data relevant to United States shoppers. Fares fluctuate with demand.
Flight time from San Francisco to Seattle depends on the airline and on whether the itinerary is nonstop or connecting. BookingTrolley shows a duration only when it is calculated from observed departure and arrival times.
Shoulder season around peak holidays often pairs softer airfares with lighter crowds. According to BookingTrolley fare data on the San Francisco to Seattle route (SFO–SEA), round-trip tickets started at $ 748.00. BookingTrolley suggests booking 4–8 weeks ahead for routes like San Francisco to Seattle.
Use BookingTrolley's flexible-date comparison for San Francisco (SFO) to Seattle (SEA) to see which days cost least. Avoiding Friday–Sunday peaks is one of the fastest ways for United States travellers to cut the ticket price.
Find cheap flights on popular routes
Explore fares from San Francisco, into Seattle, and on related corridors with BookingTrolley.
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