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

Return flights

02 Mar - 09 Mar	easyJet
02 Mar - 07 Mar	easyJet
04 Mar - 25 Mar	easyJet
05 Mar - 26 Mar	easyJet
13 Mar - 20 Mar	Fly Play	direct
02 Mar - 09 Mar	Fly Play	direct
11 Mar - 15 Mar	easyJet
13 Mar - 15 Mar	easyJet
19 Mar - 26 Mar	easyJet
14 Mar - 22 Mar	Ryanair
30 Mar - 03 Apr	Fly Play	direct
20 Mar - 03 Apr	Fly Play	direct
30 Mar - 07 Apr	easyJet
27 Mar - 05 Apr	easyJet
29 Mar - 02 Apr	Scandinavian Airlines
29 Mar - 05 Apr	Scandinavian Airlines
29 Mar - 05 Apr	Icelandair	direct
29 Mar - 02 Apr	Icelandair	direct

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

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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Cheapest return flights from Lisbon to Keflavik in March from 148€

Return flights