AirHint found the following cheapest return flights from Katowice (KTW) to Keflavik (KEF) in September 2025 (see full year).

Return flights

30 Sep - 16 Oct	Wizz Air	direct
30 Sep - 07 Oct	Wizz Air	direct
30 Sep - 14 Oct	Wizz Air	direct
30 Sep - 18 Oct	Wizz Air	direct
20 Sep - 07 Oct	Wizz Air	direct
30 Sep - 11 Oct	Wizz Air	direct
20 Sep - 09 Oct	Wizz Air	direct
30 Sep - 04 Oct	Wizz Air	direct
30 Sep - 02 Oct	Wizz Air	direct
10 Sep - 18 Sep	Ryanair
06 Sep - 14 Sep	Ryanair
04 Sep - 11 Sep	Ryanair
27 Sep - 16 Oct	Wizz Air	direct
09 Sep - 18 Sep	Ryanair
20 Sep - 27 Sep	Wizz Air	direct
11 Sep - 18 Sep	Ryanair
20 Sep - 28 Sep	Wizz Air	direct
06 Sep - 09 Sep	Ryanair
11 Sep - 14 Sep	Ryanair
18 Sep - 23 Sep	Wizz Air

Also check the deals for one-way flights from Katowice to Keflavik 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 Katowice to Keflavik in September from $189

Return flights