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

Return flights

02 Oct - 06 Oct	Lufthansa
02 Oct - 03 Nov	Lufthansa
02 Oct - 09 Oct	Lufthansa
04 Oct - 11 Oct	SWISS
05 Oct - 12 Oct	Lufthansa
30 Oct - 03 Nov	Wizz Air
01 Oct - 29 Nov	easyJet
27 Oct - 03 Nov	Wizz Air
19 Oct - 27 Oct	Lufthansa
01 Oct - 02 Nov	Lufthansa
27 Oct - 31 Oct	Wizz Air
25 Oct - 27 Oct	Wizz Air
01 Oct - 30 Nov	Wizz Air
01 Oct - 01 Nov	Wizz Air
02 Oct - 05 Oct	Wizz Air Malta
31 Oct - 07 Nov	Scandinavian Airlines
18 Oct - 26 Oct	Fly Play
19 Oct - 26 Oct	Wizz Air Malta
27 Oct - 03 Nov	Icelandair	direct
31 Oct - 07 Nov	Icelandair	direct

Also check the deals for one-way flights from Keflavik to Prague 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 Keflavik to Prague in October from $194

Return flights