Cheapest return flights from Lisbon to Keflavik in October from $158

Best time to book flights for Lisbon (LIS) to Keflavik (KEF) flights at AirHint

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

Return flights

21 Oct - 28 Oct easyJet
31 Oct - 07 Nov Fly Play direct
01 Oct - 08 Oct Air Europa
07 Oct - 14 Oct Air Europa
13 Oct - 20 Oct Transavia France
28 Oct - 04 Nov TAP
27 Oct - 03 Nov Fly Play direct
08 Oct - 15 Oct Ryanair
29 Oct - 05 Nov easyJet
31 Oct - 05 Nov Fly Play
30 Oct - 06 Nov easyJet
20 Oct - 27 Oct Ryanair
25 Oct - 01 Nov easyJet
09 Oct - 16 Oct Ryanair
15 Oct - 20 Oct Vueling Airlines
04 Oct - 11 Oct TAP
02 Oct - 09 Oct Air Europa
19 Oct - 06 Nov Ryanair
30 Oct - 03 Nov easyJet
26 Oct - 02 Nov easyJet

Also check the deals for one-way flights from Lisbon to Keflavik in October.

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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