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

Return flights

29 Nov - 02 Dec	Ryanair
29 Nov - 04 Dec	Ryanair
30 Nov - 06 Dec	Ryanair
22 Nov - 01 Dec	Ryanair
19 Nov - 23 Nov	Ryanair
15 Nov - 20 Nov	Ryanair
15 Nov - 18 Nov	Ryanair
25 Nov - 28 Nov	Ryanair
22 Nov - 25 Nov	Ryanair
29 Nov - 03 Dec	Ryanair
20 Nov - 24 Nov	Ryanair
09 Nov - 12 Nov	Volotea
07 Nov - 22 Nov	Ryanair
22 Nov - 26 Nov	Ryanair
30 Nov - 03 Dec	Ryanair
17 Nov - 19 Nov	Ryanair
23 Nov - 01 Dec	Ryanair
27 Nov - 01 Dec	Ryanair
28 Nov - 01 Dec	easyJet
17 Nov - 17 Dec	easyJet

Also check the deals for one-way flights from Lisbon 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 Lisbon to Keflavik in November from $260

Return flights