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

Return flights

13 Jul - 28 Aug	Air Canada
13 Jul - 21 Aug	Delta
10 Jul - 17 Jul	Spirit Airlines
13 Jul - 28 Aug	Finnair	direct
27 Jul - 19 Aug	American Airlines
21 Jul - 06 Aug	Spirit Airlines
29 Jul - 05 Aug	United
21 Jul - 06 Aug	Finnair	direct
22 Jul - 28 Jul	Lufthansa
14 Jul - 29 Jul	Air Canada
15 Jul - 22 Jul	United
15 Jul - 23 Jul	Lufthansa
30 Jul - 04 Aug	British Airways
09 Jul - 16 Jul	United
23 Jul - 30 Jul	United
25 Jul - 13 Aug	Spirit Airlines
27 Jul - 19 Aug	Finnair	direct
08 Jul - 19 Jul	Air Canada
18 Jul - 24 Jul	British Airways
21 Jul - 28 Jul	United

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

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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Cheapest return flights from Philadelphia to Athens in July from $746

Return flights