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

Return flights

18 Aug - 17 Sep	Fly Play
28 Aug - 31 Aug	Scandinavian Airlines
14 Aug - 17 Aug	Fly Play
14 Aug - 31 Aug	Fly Play
17 Aug - 05 Sep	airBaltic
17 Aug - 10 Sep	airBaltic
17 Aug - 12 Sep	airBaltic
17 Aug - 14 Sep	airBaltic
17 Aug - 17 Sep	airBaltic
21 Aug - 19 Sep	airBaltic
17 Aug - 31 Aug	airBaltic
14 Aug - 14 Sep	airBaltic
24 Aug - 19 Sep	Norwegian
21 Aug - 24 Aug	Fly Play
13 Aug - 20 Aug	Wizz Air
17 Aug - 11 Sep	Fly Play
07 Aug - 13 Aug	Wizz Air
21 Aug - 24 Aug	Fly Play	direct
14 Aug - 31 Aug	Fly Play	direct
17 Aug - 30 Aug	Scandinavian Airlines

Also check the deals for one-way flights from Keflavik to Vilnius 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 Keflavik to Vilnius in August from 237€

Return flights