AirHint found the following cheapest return flights from Kos (KGS) to Warsaw (WAW) in August 2025 (see full year).

Return flights

30 Aug - 03 Sep	Lufthansa
27 Aug - 09 Sep	SKY express
27 Aug - 02 Sep	SKY express
26 Aug - 09 Sep	SKY express
26 Aug - 02 Sep	SKY express
19 Aug - 09 Sep	SKY express
19 Aug - 02 Sep	SKY express
20 Aug - 09 Sep	SKY express
20 Aug - 02 Sep	SKY express
27 Aug - 17 Sep	SKY express
26 Aug - 27 Aug	SKY express
19 Aug - 20 Aug	SKY express
19 Aug - 27 Aug	SKY express
19 Aug - 26 Aug	SKY express
20 Aug - 27 Aug	SKY express
20 Aug - 26 Aug	SKY express
22 Aug - 27 Aug	SKY express
22 Aug - 26 Aug	SKY express

Also check the deals for one-way flights from Kos to Warsaw in August.

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 Kos to Warsaw in August from 374€

Return flights