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

Return flights

26 Jan - 29 Jan	Ryanair
30 Jan - 12 Feb	Ryanair
27 Jan - 29 Jan	Aer Lingus
30 Jan - 01 Feb	Icelandair	direct
30 Jan - 02 Feb	Ryanair
20 Jan - 22 Jan	Ryanair
21 Jan - 28 Jan	Ryanair
20 Jan - 27 Jan	Ryanair
21 Jan - 23 Jan	Ryanair
21 Jan - 27 Jan	Ryanair
29 Jan - 01 Feb	Icelandair	direct
30 Jan - 12 Feb	Icelandair	direct
29 Jan - 31 Jan	easyJet
21 Jan - 24 Jan	Ryanair
17 Jan - 21 Jan	easyJet
29 Jan - 02 Feb	easyJet
29 Jan - 02 Feb	Icelandair	direct

Also check the deals for one-way flights from Glasgow 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 Glasgow to Keflavik in January from 198€

Return flights