Cheapest return flights from Kos to Athens in September from $120

Best time to book flights for Kos (KGS) to Athens (ATH) flights at AirHint

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

Return flights

25 Sep - 06 Oct Aegean Airlines direct
09 Sep - 10 Sep SKY express direct
19 Sep - 22 Sep SKY express direct
30 Sep - 06 Oct SKY express direct
28 Sep - 06 Oct SKY express direct
19 Sep - 06 Oct SKY express direct
06 Sep - 10 Sep SKY express direct
09 Sep - 17 Sep SKY express direct
09 Sep - 22 Sep SKY express direct
09 Sep - 14 Sep SKY express direct
06 Sep - 17 Sep SKY express direct
06 Sep - 22 Sep SKY express direct
06 Sep - 07 Sep SKY express direct
06 Sep - 14 Sep SKY express direct

Also check the deals for one-way flights from Kos to Athens in September.

Skyscanner

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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