AirHint found the following cheapest return flights from Leipzig (LEJ) to Kos (KGS) in September 2025 (see full year).

Return flights

26 Sep - 30 Sep	Condor	direct
23 Sep - 30 Sep	Condor
26 Sep - 01 Oct	Condor	direct
23 Sep - 30 Sep	Condor	direct
25 Sep - 30 Sep	Eurowings
25 Sep - 01 Oct	Eurowings
26 Sep - 02 Oct	Condor
26 Sep - 03 Oct	Condor	direct
26 Sep - 04 Oct	Condor
23 Sep - 03 Oct	Condor
25 Sep - 02 Oct	Condor
27 Sep - 03 Oct	Sundair
23 Sep - 03 Oct	Condor	direct

Also check the deals for one-way flights from Leipzig to Kos 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 Leipzig to Kos in September from 156€

Return flights