AirHint found the following cheapest return flights from Warsaw (WMI) to Keflavik (KEF) in October 2025 (see full year).

Return flights

02 Oct - 07 Oct	Ryanair
25 Oct - 27 Oct	Ryanair
11 Oct - 19 Oct	Ryanair
28 Oct - 03 Nov	Ryanair
25 Oct - 28 Oct	Ryanair
29 Oct - 03 Nov	Ryanair
13 Oct - 19 Oct	Ryanair
16 Oct - 19 Oct	Ryanair
29 Oct - 31 Oct	Ryanair
22 Oct - 28 Oct	Ryanair
02 Oct - 09 Oct	Ryanair
04 Oct - 06 Oct	Ryanair
11 Oct - 06 Nov	Ryanair
31 Oct - 04 Nov	Ryanair
22 Oct - 06 Nov	Ryanair
31 Oct - 05 Nov	Ryanair
30 Oct - 01 Nov	Ryanair
27 Oct - 02 Nov	Ryanair

Also check the deals for one-way flights from Warsaw to Keflavik in October.

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 Warsaw to Keflavik in October from $263

Return flights