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

Return flights

04 Sep - 22 Sep	Icelandair
01 Sep - 08 Sep	Icelandair
04 Sep - 11 Sep	Icelandair
10 Sep - 17 Sep	Icelandair
17 Sep - 02 Oct	Air Canada
30 Sep - 07 Oct	Lufthansa	direct
04 Sep - 11 Sep	Lufthansa	direct
18 Sep - 03 Oct	Air Canada
01 Sep - 08 Sep	Lufthansa	direct
07 Sep - 14 Sep	United
15 Sep - 22 Sep	Lufthansa	direct
25 Sep - 02 Oct	United
04 Sep - 22 Sep	Lufthansa	direct
20 Sep - 27 Sep	United
18 Sep - 03 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 $622

Return flights