Cheapest return flights from Philadelphia to Athens in September from 575€

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

Return flights

06 Sep - 12 Sep Spirit Airlines
09 Sep - 16 Sep United
03 Sep - 10 Sep United
24 Sep - 01 Oct United
09 Sep - 23 Sep Frontier Airlines
30 Sep - 07 Oct United
15 Sep - 22 Sep Lufthansa
12 Sep - 27 Sep Frontier Airlines
18 Sep - 25 Sep United
19 Sep - 03 Oct Spirit Airlines
23 Sep - 06 Oct Lufthansa
04 Sep - 08 Sep Lufthansa
12 Sep - 19 Sep United
11 Sep - 14 Sep United
27 Sep - 04 Oct United

Also check the deals for one-way flights from Philadelphia to Athens 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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