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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
22 Sep 29 Sep Wizz Air
27 Sep 13 Oct Wizz Air Malta
21 Sep 29 Sep Scandinavian Airlines
29 Sep 22 Oct Scandinavian Airlines
07 Sep 15 Sep Wizz Air
29 Sep 01 Oct Scandinavian Airlines
30 Sep 02 Oct easyJet
04 Sep 08 Sep Wizz Air Malta
08 Sep 11 Sep easyJet
11 Sep 16 Sep Wizz Air
06 Sep 10 Sep Wizz Air Malta
13 Sep 22 Sep Transavia France
11 Sep 20 Sep Wizz Air
17 Sep 22 Sep Wizz Air
30 Sep 21 Oct Vueling Airlines
30 Sep 14 Oct Vueling Airlines
16 Sep 07 Oct Vueling Airlines
19 Sep 07 Oct Vueling Airlines
26 Sep 14 Oct Vueling Airlines
26 Sep 07 Oct Vueling Airlines
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deals for one-way flights from Keflavik to Lisbon in September.

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Updated Aug 25, 2026.

About these fares

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