Cheapest return flights from Los Angeles to Keflavik in December from $1033

AirHint found the following cheapest return flights from Los Angeles (LAX) to Keflavik (KEF) in December 2025 (see full year).

Return flights

21 Dec - 27 Dec Frontier Airlines
22 Dec - 27 Dec Frontier Airlines
24 Dec - 28 Dec Frontier Airlines
20 Dec - 27 Dec Frontier Airlines
21 Dec - 28 Dec Frontier Airlines
22 Dec - 30 Dec Frontier Airlines
25 Dec - 30 Dec Scandinavian Airlines
19 Dec - 08 Jan Spirit Airlines

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

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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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