Cheapest return LAX–KEF flights, September

AirHint found the following cheapest return flights from Los Angeles (LAX) to Keflavik (KEF) in September 2026 (see full year).

Return flights

01 Sep - 08 Sep WestJet
02 Sep - 08 Sep WestJet
19 Sep - 26 Sep WestJet
14 Sep - 21 Sep WestJet
20 Sep - 28 Sep WestJet
21 Sep - 29 Sep Frontier Airlines
18 Sep - 26 Sep WestJet
14 Sep - 24 Sep WestJet
01 Sep - 07 Sep WestJet
02 Sep - 09 Sep Southwest Airlines
28 Sep - 06 Oct Frontier Airlines
27 Sep - 05 Oct Frontier Airlines
26 Sep - 04 Oct Alaska Airlines
30 Sep - 08 Oct Frontier Airlines
29 Sep - 07 Oct Frontier Airlines
24 Sep - 02 Oct Frontier Airlines
28 Sep - 05 Oct WestJet
23 Sep - 01 Oct Frontier Airlines
25 Sep - 03 Oct WestJet

Also check the deals for one-way flights from Los Angeles to Keflavik in September.

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