Cheapest return flights from Chicago to Frankfurt in September from $602

AirHint found the following cheapest return flights from Chicago (ORD) to Frankfurt (FRA) in September 2025 (see full year).

Return flights

16 Sep - 07 Oct Condor
09 Sep - 29 Sep Condor
27 Sep - 06 Oct Condor
10 Sep - 17 Sep Frontier Airlines
24 Sep - 01 Oct Frontier Airlines
08 Sep - 29 Sep Condor
17 Sep - 01 Oct Spirit Airlines
11 Sep - 18 Sep Spirit Airlines
09 Sep - 30 Sep Frontier Airlines
25 Sep - 29 Sep Spirit Airlines
10 Sep - 01 Oct Frontier Airlines
10 Sep - 30 Sep Frontier Airlines
08 Sep - 01 Oct Frontier Airlines
23 Sep - 14 Oct Turkish Airlines
09 Sep - 23 Sep Spirit Airlines
14 Sep - 20 Sep Air Canada
08 Sep - 02 Oct Frontier Airlines
28 Sep - 12 Oct Turkish Airlines
09 Sep - 14 Sep jetBlue
18 Sep - 02 Oct Spirit Airlines

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

Skyscanner

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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