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

Return flights

30 Jul - 05 Aug	Ryanair
30 Jul - 03 Aug	Ryanair
28 Jul - 03 Aug	Ryanair
30 Jul - 02 Aug	Ryanair
26 Jul - 28 Jul	Wizz Air Malta
28 Jul - 30 Jul	Ryanair
27 Jul - 28 Jul	Wizz Air Malta
29 Jul - 31 Jul	easyJet
26 Jul - 29 Jul	Wizz Air Malta
30 Jul - 06 Aug	Ryanair
27 Jul - 30 Jul	Wizz Air Malta
28 Jul - 31 Jul	Norwegian Air Sweden AOC
28 Jul - 08 Aug	airBaltic
26 Jul - 09 Aug	Wizz Air Malta
26 Jul - 04 Aug	Wizz Air Malta
28 Jul - 04 Aug	Norwegian
27 Jul - 03 Aug	Wizz Air Malta
24 Jul - 29 Jul	Wizz Air Malta
23 Jul - 31 Jul	Wizz Air UK
23 Jul - 25 Jul	easyJet

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 345€

Return flights