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

Return flights

12 Sep - 15 Sep	Ryanair
01 Sep - 05 Sep	TUI fly Belgium
01 Sep - 05 Sep	Smart Wings	direct
12 Sep - 26 Sep	SKY express
13 Sep - 26 Sep	SKY express
22 Sep - 26 Sep	SKY express
29 Sep - 11 Oct	SKY express
29 Sep - 06 Oct	SKY express
22 Sep - 11 Oct	SKY express
22 Sep - 06 Oct	SKY express
12 Sep - 15 Sep	Smart Wings	direct
29 Sep - 04 Oct	SKY express
22 Sep - 04 Oct	SKY express
12 Sep - 22 Sep	SKY express
13 Sep - 15 Sep	SKY express
13 Sep - 22 Sep	SKY express
12 Sep - 03 Oct	SKY express
29 Sep - 03 Oct	SKY express
13 Sep - 03 Oct	SKY express
22 Sep - 03 Oct	SKY express

Also check the deals for one-way flights from Kos to Prague 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 Kos to Prague in September from 171€

Return flights