Cheapest return flights from Lisbon to Keflavik in May from 279€

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

Return flights

06 May - 13 May easyJet
13 May - 23 May Ryanair
07 May - 17 May Vueling Airlines
14 May - 24 May Vueling Airlines
07 May - 14 May TAP
03 May - 07 May easyJet
08 May - 23 May SWISS
03 May - 10 May easyJet
10 May - 21 May easyJet
31 May - 07 Jun TAP
31 May - 07 Jun Icelandair direct
07 May - 17 May Icelandair direct

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

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