Cheapest one-way OPO–KEF flights, May

AirHint found the following cheapest one-way flights from Porto (OPO) to Keflavik (KEF) in May 2026 (see full year).

One-Way flights

13 May Ryanair
19 May Ryanair
29 May Ryanair
14 May Transavia France
09 May Vueling Airlines

Also check the deals for return flights from Porto to Keflavik in May.

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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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