Cheapest return flights from Lisbon to Keflavik in September from 203€

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

Return flights

29 Sep - 08 Oct easyJet
30 Sep - 10 Oct easyJet
22 Sep - 01 Oct easyJet
17 Sep - 22 Sep easyJet
28 Sep - 14 Oct Ryanair
24 Sep - 27 Sep easyJet
12 Sep - 19 Sep Transavia France
13 Sep - 20 Sep KLM
17 Sep - 22 Sep Icelandair direct
14 Sep - 21 Sep Transavia France
13 Sep - 20 Sep Icelandair direct
24 Sep - 27 Sep Icelandair direct
29 Sep - 08 Oct Icelandair direct
22 Sep - 01 Oct Icelandair direct

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

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