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

Return flights

22 Apr - 05 May	Ryanair
21 Apr - 28 Apr	Vueling Airlines
25 Apr - 05 May	Ryanair
14 Apr - 21 Apr	Ryanair
08 Apr - 14 Apr	Ryanair
23 Apr - 05 May	Ryanair
22 Apr - 01 May	Ryanair
15 Apr - 18 Apr	Ryanair
09 Apr - 14 Apr	Vueling Airlines
22 Apr - 02 May	Ryanair
11 Apr - 14 Apr	Ryanair
15 Apr - 19 Apr	Norwegian
23 Apr - 02 May	Ryanair
10 Apr - 16 Apr	Wizz Air
24 Apr - 27 Apr	Ryanair
19 Apr - 26 Apr	Ryanair
22 Apr - 03 May	Ryanair
23 Apr - 03 May	easyJet
24 Apr - 02 May	easyJet
24 Apr - 03 May	easyJet

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 155€

Return flights