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

Return flights

06 May - 13 May	easyJet	direct
17 May - 20 May	easyJet	direct
31 May - 03 Jun	easyJet	direct
31 May - 10 Jun	easyJet	direct
13 May - 17 May	easyJet	direct
17 May - 24 May	easyJet	direct
03 May - 09 May	easyJet
20 May - 30 May	easyJet
09 May - 16 May	Wizz Air Malta
23 May - 03 Jun	Wizz Air Malta
11 May - 27 May	Wizz Air Malta
18 May - 21 May	Wizz Air Malta
22 May - 26 May	Wizz Air Malta
31 May - 11 Jun	easyJet
25 May - 01 Jun	Wizz Air Malta

Also check the deals for one-way 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 return flights from London to Keflavik in May from 87€

Return flights