AirHint found the following cheapest return flights from Porto (OPO) to Keflavik (KEF) in April 2026 (see full year).

Return flights

15 Apr - 22 Apr	easyJet
01 Apr - 29 Apr	easyJet
01 Apr - 07 Apr	easyJet
01 Apr - 08 Apr	Norwegian
01 Apr - 05 Apr	Norwegian
02 Apr - 12 Apr	Ryanair
21 Apr - 04 May	Lufthansa
05 Apr - 12 Apr	TAP
03 Apr - 11 Apr	Wizz Air
02 Apr - 11 Apr	easyJet
06 Apr - 10 Apr	Ryanair
21 Apr - 01 May	Lufthansa

Also check the deals for one-way flights from Porto to Keflavik in April.

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 Porto to Keflavik in April from 192€

Return flights