Cheapest return flights from Porto to Keflavik in March from $189

Best time to book flights for Porto (OPO) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Porto (OPO) to Keflavik (KEF) in March 2025 (see full year).

Return flights

22 Mar - 28 Mar easyJet
08 Mar - 14 Mar easyJet
14 Mar - 21 Mar Ryanair
04 Mar - 07 Mar easyJet
08 Mar - 22 Mar Ryanair
01 Mar - 08 Mar Ryanair
11 Mar - 21 Mar Ryanair
18 Mar - 22 Mar Vueling Airlines
12 Mar - 19 Mar Ryanair
04 Mar - 15 Mar Ryanair
30 Mar - 06 Apr easyJet
29 Mar - 04 Apr easyJet

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

Skyscanner

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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