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

Return flights

16 Sep - 23 Sep	Condor	direct
19 Sep - 23 Sep	Condor	direct
16 Sep - 19 Sep	Condor	direct
26 Sep - 30 Sep	Condor	direct
22 Sep - 26 Sep	Condor
23 Sep - 30 Sep	Condor
26 Sep - 01 Oct	Condor	direct
29 Sep - 06 Oct	Austrian Airlines
20 Sep - 23 Sep	SunExpress
20 Sep - 27 Sep	SunExpress
23 Sep - 27 Sep	Condor
21 Sep - 23 Sep	Corendon Airlines
29 Sep - 03 Oct	Lufthansa
30 Sep - 04 Oct	Sundair
29 Sep - 03 Oct	Freebird Airlines Europe	direct
29 Sep - 06 Oct	Freebird Airlines Europe	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 $123

Return flights