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

Return flights

15 Apr - 22 Apr	easyJet	direct
19 Apr - 27 Apr	easyJet	direct
20 Apr - 27 Apr	easyJet	direct
24 Apr - 27 Apr	easyJet	direct
26 Apr - 03 May	easyJet	direct
27 Apr - 03 May	easyJet	direct
15 Apr - 26 Apr	easyJet	direct
13 Apr - 17 Apr	easyJet	direct
10 Apr - 15 Apr	easyJet	direct
10 Apr - 13 Apr	easyJet	direct
10 Apr - 12 Apr	easyJet
24 Apr - 28 Apr	easyJet
30 Apr - 06 May	Wizz Air

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

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 April from 89€

Return flights