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

Return flights

05 Jan - 08 Jan	Ryanair
18 Jan - 22 Jan	Ryanair
19 Jan - 23 Jan	Ryanair
12 Jan - 16 Jan	Ryanair
17 Jan - 22 Jan	Ryanair
14 Jan - 22 Jan	Ryanair
14 Jan - 19 Jan	Ryanair
11 Jan - 19 Jan	Ryanair
31 Jan - 05 Feb	Ryanair
31 Jan - 02 Feb	Ryanair
15 Jan - 19 Jan	Ryanair
25 Jan - 30 Jan	Ryanair
24 Jan - 02 Feb	Ryanair
22 Jan - 17 Feb	Ryanair
24 Jan - 25 Feb	Ryanair
31 Jan - 03 Feb	Ryanair
29 Jan - 01 Feb	Ryanair
23 Jan - 04 Feb	Ryanair
31 Jan - 01 Feb	Ryanair

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 147€

Return flights