Philadelphia to San Diego (PHL → SAN). We are tracking 6 fares on this route.
Cheapest tracked fare $135 · typical price $289 · you save about $154 (53%)
Cheapest fares we're tracking
Airline
Departs
Stops
Price
—
2026-10-14
1 stop
$135
Frontier Airlines
2026-10-01
1 stop
$137
Frontier Airlines
2026-09-17
2 stops
$155
Frontier Airlines
2026-10-29
2 stops
$158
—
2026-11-04
1 stop
$159
Allegiant Air
2026-11-01
2 stops
$187
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 Philadelphia to San Diego get?
The cheapest fare we have tracked on this route is $135, compared with a typical $289 for a trip of this distance.
Is it cheaper to fly to San Diego 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 Philadelphia to San Diego 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.