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

Return flights

27 Aug - 14 Sep	Wizz Air
28 Aug - 04 Sep	Wizz Air
27 Aug - 02 Sep	Wizz Air
27 Aug - 03 Sep	Wizz Air
30 Aug - 03 Sep	KLM
30 Aug - 08 Sep	KLM
30 Aug - 10 Sep	Wizz Air
27 Aug - 14 Sep	Wizz Air	direct
27 Aug - 16 Sep	Wizz Air	direct
27 Aug - 13 Sep	Wizz Air	direct
28 Aug - 31 Aug	Lufthansa
21 Aug - 28 Aug	SWISS
29 Aug - 31 Aug	Wizz Air
26 Aug - 30 Aug	Wizz Air
21 Aug - 26 Aug	SWISS
27 Aug - 30 Aug	Wizz Air	direct
27 Aug - 31 Aug	Wizz Air	direct
21 Aug - 24 Aug	SWISS
20 Aug - 24 Aug	SWISS
22 Aug - 27 Aug	Wizz Air

Also check the deals for one-way flights from Warsaw 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.

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Cheapest return flights from Warsaw to Keflavik in August from 206€

Return flights