Cheapest return JAX–PHL flights, September

AirHint found the following cheapest return flights from Jacksonville (JAX) to Philadelphia (PHL) in September 2026 (see full year).

Return flights

17 Sep - 20 Sep Breeze Airways
18 Sep - 20 Sep Breeze Airways
30 Sep - 04 Oct Breeze Airways
18 Sep - 20 Sep Frontier Airlines direct

Also check the deals for one-way flights from Jacksonville to Philadelphia in September.

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