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

Return flights

21 Aug - 25 Aug	Condor	direct
18 Aug - 25 Aug	Condor	direct
21 Aug - 28 Aug	Condor	direct
21 Aug - 23 Aug	Condor	direct
18 Aug - 21 Aug	Condor	direct
18 Aug - 23 Aug	Condor	direct
23 Aug - 30 Aug	Edelweiss Air	direct
28 Aug - 04 Sep	Condor	direct
28 Aug - 03 Sep	Condor
27 Aug - 01 Sep	easyJet
25 Aug - 30 Aug	Condor	direct
21 Aug - 31 Aug	Condor	direct
22 Aug - 01 Sep	Eurowings
22 Aug - 25 Aug	Eurowings
24 Aug - 01 Sep	easyJet
25 Aug - 04 Sep	Condor	direct
25 Aug - 03 Sep	Condor
26 Aug - 04 Sep	easyJet
27 Aug - 02 Sep	easyJet
22 Aug - 02 Sep	Eurowings

Also check the deals for one-way flights from Zurich to Kos 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 Zurich to Kos in August from $133

Return flights