AirHint found the following cheapest return flights from Kosice (KSC) to Warsaw (WAW) in September 2025 (see full year).

Return flights

11 Sep - 14 Sep	LOT	direct
30 Sep - 31 Oct	Austrian Airlines
30 Sep - 31 Oct	LOT	direct
13 Sep - 16 Sep	LOT	direct
09 Sep - 14 Sep	LOT	direct
23 Sep - 23 Sep	LOT
11 Sep - 11 Sep	LOT	direct
25 Sep - 26 Sep	LOT	direct
11 Sep - 12 Sep	LOT	direct
09 Sep - 16 Sep	LOT	direct
10 Sep - 11 Sep	Austrian Airlines
08 Sep - 13 Sep	Austrian Airlines

Also check the deals for one-way flights from Kosice to Warsaw 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 Kosice to Warsaw in September from 166€

Return flights