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

Return flights

04 May - 12 May	Finnair
05 May - 12 May	Delta
05 May - 13 May	Delta
03 May - 11 May	KLM
02 May - 10 May	Delta
01 May - 09 May	Delta
11 May - 19 May	Aer Lingus
10 May - 18 May	Air France
12 May - 20 May	United
13 May - 21 May	Lufthansa
26 May - 03 Jun	jetBlue
24 May - 01 Jun	WestJet
27 May - 04 Jun	jetBlue
25 May - 02 Jun	WestJet
31 May - 08 Jun	WestJet
28 May - 05 Jun	jetBlue
29 May - 06 Jun	jetBlue
30 May - 07 Jun	Spirit Airlines

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

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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Cheapest return flights from Los Angeles to Keflavik in May from $505

Return flights