Cheapest return flights from London to Keflavik in May from $113

Best time to book flights for London (STN) to Keflavik (KEF) flights at AirHint

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

Return flights

14 May - 21 May Fly Play direct
06 May - 12 May Fly Play direct
07 May - 12 May Fly Play direct
01 May - 07 May Fly Play direct
03 May - 07 May Fly Play direct
07 May - 14 May Fly Play direct
14 May - 19 May Fly Play direct
09 May - 14 May Fly Play direct
15 May - 19 May Fly Play direct
01 May - 03 May Fly Play direct
29 May - 02 Jun Fly Play direct
31 May - 07 Jun Fly Play direct
29 May - 03 Jun Fly Play direct
28 May - 06 Jun Fly Play direct
28 May - 02 Jun Fly Play direct
30 May - 06 Jun Fly Play direct
27 May - 06 Jun Fly Play direct
27 May - 02 Jun Fly Play direct
27 May - 03 Jun Fly Play direct
29 May - 01 Jun Fly Play direct

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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