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

Return flights

25 Jan - 01 Feb	British Airways
31 Jan - 08 Feb	British Airways
29 Jan - 06 Feb	British Airways
28 Jan - 04 Feb	jetBlue
25 Jan - 02 Feb	jetBlue
10 Jan - 18 Jan	Lufthansa
13 Jan - 21 Jan	jetBlue
29 Jan - 05 Feb	jetBlue
01 Jan - 09 Jan	Lufthansa
14 Jan - 22 Jan	jetBlue
21 Jan - 29 Jan	jetBlue
27 Jan - 03 Feb	jetBlue
23 Jan - 31 Jan	Icelandair
04 Jan - 12 Jan	Scandinavian Airlines
17 Jan - 24 Jan	jetBlue
09 Jan - 17 Jan	Scandinavian Airlines

Also check the deals for one-way flights from Atlanta 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 Atlanta to Keflavik in January from $675

Return flights