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

Return flights

21 Aug - 28 Aug	Wizz Air
28 Aug - 03 Sep	Wizz Air
28 Aug - 04 Sep	Fly Play
16 Aug - 20 Aug	Wizz Air
21 Aug - 29 Aug	Fly Play
03 Aug - 07 Aug	Lufthansa
07 Aug - 14 Aug	Lufthansa
14 Aug - 18 Aug	Wizz Air
11 Aug - 18 Aug	SWISS
22 Aug - 25 Aug	SWISS
06 Aug - 13 Aug	Wizz Air
10 Aug - 14 Aug	Lufthansa
28 Aug - 04 Sep	Fly Play	direct
24 Aug - 14 Sep	Vueling Airlines
24 Aug - 07 Sep	Vueling Airlines
31 Aug - 14 Sep	Vueling Airlines
31 Aug - 07 Sep	Vueling Airlines
17 Aug - 07 Sep	Vueling Airlines

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

Cheap car rent in Prague

Cheapest return flights from Keflavik to Prague in August from $276

Return flights