Cheapest return flights from London to Keflavik in May from $227

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

Return flights

15 May - 21 May easyJet
17 May - 20 May Ryanair
20 May - 24 May Ryanair
14 May - 21 May Ryanair
06 May - 13 May Ryanair
08 May - 17 May easyJet
30 May - 02 Jun Ryanair
26 May - 02 Jun easyJet
22 May - 26 May easyJet
02 May - 09 May Ryanair
29 May - 02 Jun easyJet
15 May - 17 May Ryanair
17 May - 24 May Ryanair

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

Skyscanner

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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