Cheapest return flights from Lisbon to Keflavik in September from 287€

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

Return flights

22 Sep - 27 Sep Ryanair
29 Sep - 08 Oct TAP
20 Sep - 27 Sep Vueling Airlines
15 Sep - 21 Sep TAP
23 Sep - 30 Sep easyJet
15 Sep - 22 Sep easyJet
27 Sep - 08 Oct easyJet
14 Sep - 21 Sep easyJet
13 Sep - 20 Sep TAP
06 Sep - 25 Sep Ryanair
17 Sep - 24 Sep KLM
09 Sep - 19 Sep easyJet
23 Sep - 10 Oct Vueling Airlines

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

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