Cheapest return flights from London to Keflavik in July from $254

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

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

Return flights

18 Jul - 20 Jul Icelandair direct
04 Jul - 20 Jul Icelandair direct
21 Jul - 27 Jul Icelandair direct
07 Jul - 13 Jul Icelandair direct
06 Jul - 12 Jul Icelandair direct
03 Jul - 06 Jul Icelandair direct
04 Jul - 08 Jul Icelandair direct
20 Jul - 31 Jul Icelandair direct
06 Jul - 13 Jul Icelandair direct
01 Jul - 06 Jul Icelandair direct
31 Jul - 21 Aug Icelandair direct
30 Jul - 07 Aug Icelandair direct
31 Jul - 22 Aug Icelandair direct
31 Jul - 03 Aug Icelandair direct
29 Jul - 08 Aug Icelandair direct
26 Jul - 01 Aug Icelandair direct
25 Jul - 08 Aug Icelandair direct
25 Jul - 02 Aug Icelandair direct
28 Jul - 09 Aug Icelandair direct
26 Jul - 20 Aug Icelandair direct

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

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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