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

Return flights

31 Oct - 08 Nov	Ryanair
22 Oct - 26 Oct	Lufthansa
31 Oct - 04 Nov	Ryanair
31 Oct - 24 Nov	Ryanair
22 Oct - 27 Oct	Lufthansa
29 Oct - 01 Nov	Finnair
30 Oct - 01 Nov	Finnair
23 Oct - 26 Oct	LOT
23 Oct - 28 Oct	Norwegian
31 Oct - 03 Nov	Ryanair
22 Oct - 01 Nov	Lufthansa
24 Oct - 28 Oct	Finnair
26 Oct - 31 Oct	LOT
27 Oct - 01 Nov	Finnair
24 Oct - 26 Oct	Finnair
26 Oct - 30 Oct	LOT
27 Oct - 03 Nov	SWISS
21 Oct - 31 Oct	Wizz Air UK
29 Oct - 31 Oct	Finnair
31 Oct - 02 Nov	easyJet

Also check the deals for one-way flights from Prague 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 Prague to Keflavik in October from 203€

Return flights