Seattle to St Louis (SEA → STL). We are tracking 12 fares on this route.
Cheapest tracked fare $75 · typical price $172 · you save about $97 (56%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-11-07
1 stop
$75
—
2027-02-05
1 stop
$75
—
2026-10-30
1 stop
$76
—
2026-11-13
1 stop
$96
—
2027-01-23
Direct
$99
—
2027-03-03
Direct
$99
American Airlines
2026-10-21
1 stop
$104
—
2026-10-28
1 stop
$109
—
2026-11-04
1 stop
$109
—
2026-12-01
1 stop
$109
—
2027-01-06
1 stop
$114
—
2026-11-18
1 stop
$114
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 Seattle to St Louis get?
The cheapest fare we have tracked on this route is $75, compared with a typical $172 for a trip of this distance.
Is it cheaper to fly to St Louis 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 Seattle to St Louis 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.