AirHint found the following cheapest return flights from Jacksonville (JAX) to Philadelphia (PHL) in July 2026 (see full year).
Return flights
| 29 Jul - 04 Aug | Frontier Airlines | ||
| 14 Jul - 20 Jul | Frontier Airlines | ||
| 15 Jul - 20 Jul | Frontier Airlines | ||
| 01 Jul - 05 Jul | Breeze Airways | ||
| 13 Jul - 18 Jul | Allegiant Air |
Also check the deals for one-way flights from Jacksonville to Philadelphia in July.
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