AirHint found the following cheapest return flights from Detroit (DTW) to Frankfurt (FRA) in July 2025 (see full year).

Return flights

31 Jul - 21 Aug	Spirit Airlines
22 Jul - 07 Aug	Spirit Airlines
29 Jul - 10 Aug	Spirit Airlines
10 Jul - 17 Jul	jetBlue
09 Jul - 16 Jul	Condor
17 Jul - 24 Jul	jetBlue
26 Jul - 09 Aug	Condor
28 Jul - 03 Aug	Condor
19 Jul - 27 Jul	Condor
07 Jul - 14 Jul	Icelandair
19 Jul - 27 Jul	Air France	direct
08 Jul - 03 Aug	Icelandair
09 Jul - 16 Jul	Lufthansa	direct
22 Jul - 07 Aug	Air France	direct
10 Jul - 17 Jul	Lufthansa	direct
08 Jul - 05 Aug	Delta	direct
17 Jul - 24 Jul	Lufthansa	direct
29 Jul - 10 Aug	Virgin Atlantic	direct
07 Jul - 14 Jul	Lufthansa	direct
08 Jul - 03 Aug	Lufthansa	direct

Also check the deals for one-way flights from Detroit to Frankfurt 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 Detroit to Frankfurt in July from $668

Return flights