Cheapest return flights from Lisbon to Keflavik in May from $177

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

Return flights

19 May - 26 May easyJet
06 May - 09 May easyJet
01 May - 04 May Fly Play direct
11 May - 15 May Fly Play direct
01 May - 05 May Fly Play
18 May - 25 May Fly Play direct
12 May - 12 May easyJet
01 May - 03 May TAP
29 May - 05 Jun easyJet
07 May - 10 May Lufthansa
29 May - 05 Jun Fly Play direct
07 May - 10 May Icelandair direct

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

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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