Cheapest return flights from Lisbon to Keflavik in August from 238€

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

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

Return flights

15 Aug - 25 Aug Fly Play direct
01 Aug - 25 Aug Fly Play direct
04 Aug - 11 Aug Fly Play direct
01 Aug - 11 Aug Fly Play direct
18 Aug - 01 Sep Fly Play direct
18 Aug - 29 Aug Fly Play direct
15 Aug - 28 Aug Fly Play
23 Aug - 01 Sep Ryanair
19 Aug - 26 Aug Ryanair
01 Aug - 08 Aug Fly Play direct
04 Aug - 08 Aug Fly Play direct
14 Aug - 28 Aug Eurowings
29 Aug - 11 Sep Ryanair
17 Aug - 01 Sep Ryanair
21 Aug - 04 Sep Iberia
21 Aug - 04 Sep Icelandair direct

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

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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