Cheapest return flights from Lisbon (LIS) to Keflavik (KEF), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
20 Sep 30 Sep easyJet
25 Sep 03 Oct Ryanair
29 Sep 04 Oct Ryanair
23 Sep 29 Sep Ryanair
18 Sep 28 Sep Ryanair
03 Sep 08 Oct Ryanair
04 Sep 13 Sep Ryanair
28 Sep 04 Oct Ryanair
04 Sep 08 Oct Ryanair
01 Sep 07 Sep easyJet
25 Sep 07 Oct Vueling Airlines
03 Sep 13 Sep Lufthansa
03 Sep 07 Sep Lufthansa
06 Sep 15 Sep Ryanair
03 Sep 10 Sep Ryanair
20 Sep 28 Sep Ryanair
28 Sep 03 Oct Ryanair
29 Sep 04 Oct Icelandair
Direct Flight
16 Sep 03 Oct Vueling Airlines
03 Sep 08 Oct Icelandair
Direct Flight
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Updated Aug 25, 2026.

About these fares

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