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

Return flights

28 Sep - 01 Oct	Ryanair
23 Sep - 27 Sep	Ryanair
18 Sep - 27 Sep	Condor	direct
13 Sep - 27 Sep	Condor	direct
28 Sep - 29 Sep	Condor	direct
08 Sep - 10 Sep	Condor	direct
21 Sep - 26 Sep	Condor	direct
24 Sep - 27 Sep	Condor	direct
18 Sep - 20 Sep	Condor	direct
16 Sep - 23 Sep	Condor	direct
18 Sep - 23 Sep	Condor	direct
28 Sep - 03 Oct	Condor	direct
14 Sep - 02 Oct	Condor	direct
28 Sep - 01 Oct	Condor	direct
30 Sep - 03 Oct	Condor	direct
30 Sep - 06 Oct	Condor	direct
29 Sep - 01 Oct	Condor	direct
30 Sep - 04 Oct	Condor	direct
27 Sep - 01 Oct	Condor	direct
30 Sep - 02 Oct	Condor	direct

Also check the deals for one-way flights from Frankfurt to Prague 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 Frankfurt to Prague in September from 108€

Return flights