Cheapest return flights from Lisbon to Keflavik in August from 344€

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

Return flights

30 Aug - 06 Sep Ryanair
30 Aug - 06 Sep Icelandair direct
13 Aug - 27 Aug easyJet
19 Aug - 24 Aug Transavia France
16 Aug - 26 Aug Ryanair
01 Aug - 09 Aug easyJet
20 Aug - 27 Aug TAP
13 Aug - 18 Aug easyJet
17 Aug - 26 Aug TAP
02 Aug - 09 Aug Ryanair
15 Aug - 22 Aug Ryanair
01 Aug - 15 Aug Ryanair

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

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