AirHint found the following cheapest one-way flights from London (LGW) to Keflavik (KEF) in May 2026 (see full year).

One-Way flights

18 May	Wizz Air Malta
02 May	easyJet
23 May	Wizz Air Malta
03 May	airBaltic
02 May	Icelandair	direct
03 May	Icelandair	direct
27 May	Wizz Air UK
24 May	easyJet
24 May	Icelandair	direct
23 May	Icelandair	direct

Also check the deals for return flights from London 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 one-way flights from London to Keflavik in May from $127

One-Way flights