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

Return flights

07 Mar - 14 Mar	easyJet
14 Mar - 17 Mar	easyJet
02 Mar - 09 Mar	easyJet
07 Mar - 12 Mar	easyJet
02 Mar - 07 Mar	easyJet
13 Mar - 16 Mar	easyJet
07 Mar - 08 Mar	easyJet
02 Mar - 08 Mar	easyJet
01 Mar - 12 Mar	easyJet
04 Mar - 08 Mar	easyJet
30 Mar - 02 Apr	Scandinavian Airlines
26 Mar - 12 Apr	easyJet
31 Mar - 04 Apr	Scandinavian Airlines
30 Mar - 04 Apr	Scandinavian Airlines
27 Mar - 04 Apr	Vueling Airlines
29 Mar - 05 Apr	Vueling Airlines
29 Mar - 04 Apr	Scandinavian Airlines
29 Mar - 03 Apr	transavia
26 Mar - 12 Apr	Icelandair	direct
29 Mar - 05 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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Lisbon to Keflavik in March from 142€

Return flights