AirHint found the following cheapest return flights from Philadelphia (PHL) to Frankfurt (FRA) in August 2025 (see full year).

Return flights

18 Aug - 27 Aug	Frontier Airlines
17 Aug - 26 Aug	Lufthansa	direct
19 Aug - 26 Aug	Air Canada
18 Aug - 27 Aug	Lufthansa	direct
20 Aug - 27 Aug	Lufthansa	direct
25 Aug - 08 Sep	Condor
15 Aug - 19 Aug	Air Canada
19 Aug - 26 Aug	Discover Airlines	direct
17 Aug - 24 Aug	United
15 Aug - 22 Aug	United
15 Aug - 29 Aug	British Airways
25 Aug - 08 Sep	Lufthansa	direct
28 Aug - 04 Sep	Lufthansa	direct
30 Aug - 06 Sep	Lufthansa
25 Aug - 01 Sep	Lufthansa	direct

Also check the deals for one-way flights from Philadelphia to Frankfurt in August.

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.

Book a cheap hotel in Frankfurt

Cheap car rent in Frankfurt

Cheapest return flights from Philadelphia to Frankfurt in August from 588€

Return flights