San Francisco to Seattle (SFO → SEA). We are tracking 16 fares on this route.
Cheapest tracked fare $56 · typical price $137 · you save about $81 (59%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
Alaska Airlines
2026-09-21
Direct
$56
—
2026-10-20
1 stop
$65
—
2026-11-10
1 stop
$65
—
2026-12-07
1 stop
$65
—
2026-10-14
1 stop
$65
Frontier Airlines
2026-10-19
1 stop
$78
—
2027-01-06
Direct
$79
—
2026-09-23
Direct
$79
—
2026-10-07
Direct
$79
—
2026-11-04
Direct
$79
—
2026-12-02
Direct
$79
—
2027-02-03
Direct
$79
—
2026-09-24
Direct
$79
Frontier Airlines
2026-10-10
1 stop
$88
Alaska Airlines
2026-09-13
Direct
$93
United Airlines
2026-09-19
Direct
$95
Could you save more?
The airport you were going to fly from is often not the cheapest one. Compare every airport in a region against each other, or check whether a multi-day stopover beats the direct fare.
How cheap can flights from San Francisco to Seattle get?
The cheapest fare we have tracked on this route is $56, compared with a typical $137 for a trip of this distance.
Is it cheaper to fly to Seattle from a different airport?
Often, yes. Fares out of secondary airports are frequently cheaper than the obvious hub, but they are the ones most likely to be missing from a normal search. Our reverse search compares every airport in a region against each other so the cheaper departure point is not hidden.
Could a stopover make San Francisco to Seattle cheaper?
Sometimes. On thin long-haul routes a two-leg trip with a multi-day stopover can beat the direct fare, and occasionally a direct fare is not sold at all. Our detour search prices those routings against the direct flight.