Cheapest return flights from Philadelphia to Atlanta in September from $109

AirHint found the following cheapest return flights from Philadelphia (PHL) to Atlanta (ATL) in September 2025 (see full year).

Return flights

25 Sep - 29 Sep Frontier Airlines
26 Sep - 28 Sep Frontier Airlines direct
26 Sep - 29 Sep Frontier Airlines direct
28 Sep - 15 Oct Spirit Airlines
28 Sep - 07 Oct Spirit Airlines
28 Sep - 08 Oct Spirit Airlines
21 Sep - 27 Sep Spirit Airlines
24 Sep - 26 Sep Frontier Airlines direct
30 Sep - 03 Oct Frontier Airlines direct
29 Sep - 02 Oct Frontier Airlines direct
28 Sep - 11 Oct Spirit Airlines
28 Sep - 16 Oct Spirit Airlines
28 Sep - 09 Oct Spirit Airlines
28 Sep - 14 Oct Spirit Airlines
22 Sep - 07 Oct Spirit Airlines
25 Sep - 28 Sep Frontier Airlines
24 Sep - 28 Sep Frontier Airlines
22 Sep - 26 Sep Spirit Airlines direct
24 Sep - 28 Sep Frontier Airlines direct
24 Sep - 29 Sep Frontier Airlines direct

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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