Seattle to Philadelphia (SEA → PHL). We are tracking 13 fares on this route.
Cheapest tracked fare $125 · typical price $197 · you save about $72 (37%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-10-23
1 stop
$125
—
2026-10-19
1 stop
$135
—
2026-11-23
1 stop
$135
—
2026-10-28
1 stop
$136
—
2026-11-11
1 stop
$136
—
2026-11-14
1 stop
$136
—
2026-12-01
1 stop
$136
—
2027-01-20
1 stop
$136
—
2027-03-01
1 stop
$136
—
2026-11-22
1 stop
$156
—
2026-11-20
1 stop
$170
—
2026-11-04
1 stop
$200
—
2027-02-03
1 stop
$200
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 Philadelphia get?
The cheapest fare we have tracked on this route is $125, compared with a typical $197 for a trip of this distance.
Is it cheaper to fly to Philadelphia 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 Philadelphia 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.