Cheapest return flights from London to Keflavik in May from 142€

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

Return flights

09 May - 12 May Ryanair
05 May - 12 May Ryanair
19 May - 23 May Ryanair
15 May - 20 May easyJet
11 May - 19 May Ryanair
26 May - 01 Jun Ryanair
14 May - 28 May Ryanair
20 May - 03 Jun Ryanair
23 May - 26 May Ryanair
10 May - 17 May Ryanair
26 May - 02 Jun Ryanair
18 May - 03 Jun Ryanair
12 May - 26 May Ryanair
31 May - 03 Jun Ryanair
05 May - 14 May Ryanair
28 May - 01 Jun Ryanair
31 May - 13 Jun easyJet
29 May - 01 Jun Ryanair
30 May - 05 Jun Ryanair
31 May - 06 Jun Ryanair

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

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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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