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

Return flights

10 Sep - 15 Sep	easyJet
16 Sep - 23 Sep	easyJet
03 Sep - 15 Sep	easyJet
11 Sep - 15 Sep	Condor	direct
25 Sep - 06 Oct	easyJet
23 Sep - 30 Sep	Aegean Airlines
10 Sep - 18 Sep	easyJet
10 Sep - 17 Sep	easyJet
18 Sep - 24 Sep	easyJet
04 Sep - 10 Sep	easyJet
10 Sep - 10 Sep	easyJet
22 Sep - 02 Oct	Aegean Airlines
23 Sep - 06 Oct	Aegean Airlines
28 Sep - 09 Oct	easyJet
26 Sep - 04 Oct	Eurowings
29 Sep - 04 Oct	Air Serbia
21 Sep - 03 Oct	Aegean Airlines
23 Sep - 07 Oct	easyJet
21 Sep - 04 Oct	SWISS
23 Sep - 03 Oct	Chair Airlines

Also check the deals for one-way flights from Zurich to Kos 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.

Book a cheap hotel in Kos

Cheap car rent in Kos

Cheapest return flights from Zurich to Kos in September from 213€

Return flights