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

Return flights

23 Sep - 27 Sep	Ryanair	direct
23 Sep - 30 Sep	Ryanair	direct
20 Sep - 27 Sep	Ryanair	direct
20 Sep - 30 Sep	Ryanair	direct
20 Sep - 23 Sep	Ryanair	direct
16 Sep - 27 Sep	Ryanair	direct
16 Sep - 30 Sep	Ryanair	direct
13 Sep - 27 Sep	Ryanair	direct
13 Sep - 30 Sep	Ryanair	direct
16 Sep - 23 Sep	Ryanair	direct

Also check the deals for one-way flights from Kos to Bari 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 Bari in September from $81

Return flights