Cheapest return flights from Philadelphia to Athens in September from $739

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

Return flights

09 Sep - 16 Sep United
03 Sep - 10 Sep United
09 Sep - 23 Sep Air Canada
20 Sep - 27 Sep Spirit Airlines
23 Sep - 06 Oct American Airlines
20 Sep - 01 Oct British Airways
13 Sep - 27 Sep Spirit Airlines
22 Sep - 29 Sep United
19 Sep - 03 Oct Air Canada
12 Sep - 27 Sep Turkish Airlines
04 Sep - 08 Sep Lufthansa
06 Sep - 13 Sep United
27 Sep - 04 Oct United
20 Sep - 01 Oct Iberia direct
13 Sep - 27 Sep British Airways direct

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

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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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