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

Return flights

01 Jul - 15 Jul	Wizz Air Malta
08 Jul - 22 Jul	Wizz Air Malta
01 Jul - 08 Jul	Wizz Air Malta
10 Jul - 15 Jul	Wizz Air Malta
15 Jul - 30 Jul	easyJet
15 Jul - 22 Jul	Wizz Air Malta
15 Jul - 23 Jul	easyJet
22 Jul - 24 Jul	easyJet
10 Jul - 17 Jul	Wizz Air Malta
15 Jul - 21 Jul	easyJet
24 Jul - 04 Aug	Wizz Air Malta
29 Jul - 05 Aug	easyJet
25 Jul - 01 Aug	easyJet
30 Jul - 06 Aug	easyJet
30 Jul - 13 Aug	easyJet
25 Jul - 03 Aug	easyJet
30 Jul - 01 Aug	easyJet
31 Jul - 05 Aug	Icelandair	direct
29 Jul - 11 Aug	easyJet
31 Jul - 04 Aug	Wizz Air Malta

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

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 July from $221

Return flights