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

Return flights

11 Oct - 21 Oct	Lufthansa
30 Oct - 06 Nov	easyJet
30 Oct - 05 Nov	easyJet
31 Oct - 05 Nov	easyJet
31 Oct - 07 Nov	easyJet
16 Oct - 21 Oct	Lufthansa
30 Oct - 04 Nov	easyJet
13 Oct - 19 Oct	Ryanair
07 Oct - 14 Oct	Wizz Air UK
07 Oct - 12 Oct	Wizz Air UK
25 Oct - 30 Oct	Ryanair
08 Oct - 15 Oct	Wizz Air UK
31 Oct - 03 Nov	easyJet
09 Oct - 15 Oct	Ryanair
31 Oct - 02 Nov	Ryanair
08 Oct - 11 Oct	Ryanair
01 Oct - 05 Oct	Ryanair
30 Oct - 02 Nov	Norwegian Air Sweden AOC
29 Oct - 04 Nov	easyJet
20 Oct - 17 Nov	Ryanair

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 144€

Return flights