Washington Reagan to Seattle (DCA → SEA). We are tracking 7 fares on this route.
Cheapest tracked fare $108 · typical price $285 · you save about $177 (62%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
Frontier Airlines
2026-09-20
1 stop
$108
Frontier Airlines
2026-11-16
1 stop
$138
—
2026-10-28
1 stop
$139
—
2026-11-11
1 stop
$139
—
2026-09-23
1 stop
$145
American Airlines
2026-09-11
1 stop
$158
American Airlines
2026-11-18
1 stop
$163
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 Washington Reagan to Seattle get?
The cheapest fare we have tracked on this route is $108, compared with a typical $285 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 Washington Reagan 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.