Cheapest return flights from Lisbon to Keflavik in September from 265€

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

Return flights

12 Sep - 23 Sep easyJet
30 Sep - 06 Oct easyJet
18 Sep - 27 Sep TAP
03 Sep - 13 Sep TAP
29 Sep - 11 Oct easyJet
16 Sep - 26 Sep Vueling Airlines
12 Sep - 20 Sep easyJet
22 Sep - 30 Sep easyJet
22 Sep - 29 Sep easyJet
22 Sep - 01 Oct easyJet
20 Sep - 27 Sep TAP
04 Sep - 15 Sep easyJet
26 Sep - 30 Sep easyJet
26 Sep - 01 Oct easyJet
27 Sep - 01 Oct easyJet
29 Sep - 11 Oct Icelandair direct
26 Sep - 07 Oct Vueling Airlines
23 Sep - 07 Oct Vueling Airlines
22 Sep - 01 Oct Icelandair direct
24 Sep - 01 Oct Icelandair direct

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

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