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

Return flights

26 Jan - 30 Jan	easyJet	direct
28 Jan - 30 Jan	easyJet	direct
30 Jan - 02 Feb	easyJet	direct
11 Jan - 15 Jan	easyJet	direct
15 Jan - 19 Jan	easyJet	direct
09 Jan - 12 Jan	easyJet	direct
08 Jan - 12 Jan	easyJet	direct
09 Jan - 18 Jan	easyJet	direct
19 Jan - 22 Jan	easyJet	direct
14 Jan - 28 Jan	easyJet	direct
09 Jan - 16 Jan	easyJet	direct
31 Jan - 02 Feb	easyJet	direct
31 Jan - 06 Feb	easyJet	direct
27 Jan - 06 Feb	Icelandair	direct

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

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 January from $110

Return flights