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

Return flights

14 Nov - 18 Nov	easyJet
05 Nov - 20 Nov	easyJet
22 Nov - 28 Nov	Ryanair
30 Nov - 06 Dec	easyJet
26 Nov - 30 Nov	easyJet
14 Nov - 28 Nov	Vueling Airlines
23 Nov - 29 Nov	easyJet
11 Nov - 15 Nov	easyJet
29 Nov - 01 Dec	easyJet
12 Nov - 17 Nov	Ryanair
29 Nov - 05 Dec	easyJet
28 Nov - 01 Dec	easyJet
01 Nov - 08 Nov	easyJet
15 Nov - 22 Nov	Ryanair
27 Nov - 03 Dec	Ryanair

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

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 November from 182€

Return flights