Cheapest return flights from Porto to Keflavik in August from $222

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 August 2025 (see full year).

Return flights

23 Aug - 07 Sep Fly Play direct
23 Aug - 26 Aug Fly Play direct
30 Aug - 07 Sep Fly Play direct
23 Aug - 03 Sep Fly Play
12 Aug - 19 Aug Fly Play direct
23 Aug - 30 Aug Fly Play direct
05 Aug - 12 Aug Fly Play direct
05 Aug - 19 Aug Fly Play direct
23 Aug - 04 Sep Fly Play
06 Aug - 12 Aug Ryanair
09 Aug - 12 Aug Fly Play direct
19 Aug - 02 Sep Ryanair
16 Aug - 19 Aug Fly Play direct
19 Aug - 26 Aug Ryanair
11 Aug - 17 Aug Ryanair
30 Aug - 06 Sep Air Europa
23 Aug - 04 Sep Fly Play direct

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

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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