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

Return flights

31 Aug - 08 Sep	Lufthansa
30 Aug - 11 Sep	Lufthansa
28 Aug - 09 Sep	Wizz Air UK
30 Aug - 06 Sep	Lufthansa
30 Aug - 04 Sep	Lufthansa
28 Aug - 04 Sep	SWISS
30 Aug - 01 Sep	Lufthansa
31 Aug - 07 Sep	Lufthansa
23 Aug - 01 Sep	Lufthansa
29 Aug - 07 Sep	Norwegian Air Sweden AOC
21 Aug - 29 Aug	SWISS
07 Aug - 10 Aug	SWISS
18 Aug - 22 Aug	SWISS
23 Aug - 27 Aug	Lufthansa
07 Aug - 17 Aug	SWISS
07 Aug - 11 Aug	SWISS
20 Aug - 27 Aug	Lufthansa
27 Aug - 31 Aug	Ryanair
21 Aug - 28 Aug	SWISS
23 Aug - 28 Aug	Lufthansa

Also check the deals for one-way flights from Prague to Keflavik in August.

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Prague to Keflavik in August from 202€

Return flights