Cheapest return flights from Porto (OPO) to Keflavik (KEF), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
16 Sep 23 Sep Ryanair
30 Sep 06 Oct Ryanair
23 Sep 04 Oct Wizz Air Malta
23 Sep 01 Oct Ryanair
23 Sep 05 Oct Ryanair
22 Sep 04 Oct Ryanair
30 Sep 04 Oct Wizz Air Malta
23 Sep 29 Sep Ryanair
29 Sep 04 Oct Ryanair
09 Sep 22 Sep Ryanair
29 Sep 06 Oct Ryanair
17 Sep 27 Sep Ryanair
21 Sep 30 Sep Ryanair
09 Sep 16 Sep Ryanair
23 Sep 03 Oct Ryanair
24 Sep 04 Oct Ryanair
01 Sep 08 Sep Ryanair
02 Sep 09 Sep KLM
08 Sep 14 Sep Ryanair
01 Sep 07 Sep Ryanair
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Updated Jul 8, 2026.

About these fares

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