AirHint found the following cheapest return flights from London (LTN) to Keflavik (KEF) in June 2025 (see full year).

Return flights

15 Jun - 19 Jun	easyJet
15 Jun - 25 Jun	easyJet	direct
15 Jun - 17 Jun	easyJet
15 Jun - 18 Jun	easyJet	direct
22 Jun - 25 Jun	easyJet	direct
25 Jun - 02 Jul	easyJet	direct
15 Jun - 22 Jun	easyJet
25 Jun - 29 Jun	easyJet	direct
22 Jun - 29 Jun	easyJet	direct
23 Jun - 25 Jun	Wizz Air
25 Jun - 01 Jul	Wizz Air
15 Jun - 31 Jul	easyJet
18 Jun - 25 Jun	easyJet	direct
26 Jun - 03 Jul	Wizz Air
25 Jun - 11 Jul	Wizz Air
26 Jun - 01 Jul	Wizz Air
18 Jun - 06 Jul	easyJet	direct
22 Jun - 25 Jul	easyJet
28 Jun - 09 Jul	Wizz Air
26 Jun - 02 Jul	Wizz Air

Also check the deals for one-way flights from London to Keflavik in June.

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 June from $225

Return flights