AirHint found the following cheapest return flights from Raleigh-durham (RDU) to Frankfurt (FRA) in September 2025 (see full year).

Return flights

08 Sep - 15 Sep	Spirit Airlines
05 Sep - 13 Sep	Condor
05 Sep - 12 Sep	Condor
01 Sep - 06 Sep	Condor
01 Sep - 08 Sep	Icelandair
03 Sep - 10 Sep	Icelandair
09 Sep - 16 Sep	Icelandair
09 Sep - 16 Sep	Lufthansa	direct
11 Sep - 18 Sep	Icelandair
30 Sep - 07 Oct	Lufthansa	direct
17 Sep - 24 Sep	Lufthansa
24 Sep - 01 Oct	Lufthansa
27 Sep - 04 Oct	Lufthansa	direct

Also check the deals for one-way flights from Raleigh-durham to Frankfurt in September.

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 Raleigh-durham to Frankfurt in September from 538€

Return flights