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

Return flights

19 Sep - 22 Sep	SWISS
20 Sep - 24 Sep	Austrian Airlines
27 Sep - 01 Oct	Austrian Airlines
20 Sep - 29 Sep	Austrian Airlines
27 Sep - 29 Sep	Austrian Airlines
20 Sep - 22 Sep	Austrian Airlines
27 Sep - 30 Sep	Austrian Airlines
19 Sep - 25 Sep	SWISS
27 Sep - 28 Sep	Austrian Airlines
28 Sep - 02 Oct	Austrian Airlines
24 Sep - 27 Sep	Austrian Airlines
15 Sep - 22 Sep	Austrian Airlines
24 Sep - 01 Oct	Austrian Airlines
24 Sep - 15 Oct	Austrian Airlines
25 Sep - 15 Oct	Austrian Airlines

Also check the deals for one-way flights from London to Kosice 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 London to Kosice in September from 171€

Return flights