Cheapest return LIS–KEF flights, August

AirHint found the following cheapest return flights from Lisbon (LIS) to Keflavik (KEF) in August 2026 (see full year).

Return flights

28 Aug - 14 Sep Ryanair
27 Aug - 14 Sep Vueling Airlines
31 Aug - 06 Sep Ryanair
28 Aug - 17 Sep Ryanair
26 Aug - 14 Sep Vueling Airlines
21 Aug - 14 Sep Ryanair
31 Aug - 05 Sep Ryanair
27 Aug - 13 Sep Vueling Airlines
27 Aug - 30 Aug Vueling Airlines
26 Aug - 09 Sep TAP
29 Aug - 05 Sep Wizz Air
11 Aug - 21 Aug Ryanair
11 Aug - 20 Aug Ryanair
12 Aug - 21 Aug easyJet
10 Aug - 20 Aug Vueling Airlines
13 Aug - 23 Aug Vueling Airlines
24 Aug - 27 Aug easyJet
12 Aug - 20 Aug easyJet
06 Aug - 12 Aug Transavia France
13 Aug - 20 Aug Transavia France

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

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