Cheapest return flights from Keflavik to Lisbon in May from 276€

Best time to book flights for Keflavik (KEF) to Lisbon (LIS) flights at AirHint

AirHint found the following cheapest return flights from Keflavik (KEF) to Lisbon (LIS) in May 2025 (see full year).

Return flights

10 May - 20 May easyJet
01 May - 04 May Fly Play
09 May - 19 May Fly Play
25 May - 01 Jun Iberia Express
09 May - 19 May Fly Play direct
25 May - 01 Jun Icelandair direct
01 May - 04 May Icelandair direct

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