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

Return flights

10 Jan - 18 Jan	jetBlue
13 Jan - 21 Jan	jetBlue
19 Jan - 27 Jan	jetBlue
12 Jan - 20 Jan	jetBlue
22 Jan - 30 Jan	jetBlue
15 Jan - 23 Jan	jetBlue
23 Jan - 31 Jan	jetBlue
14 Jan - 22 Jan	jetBlue
17 Jan - 25 Jan	jetBlue
04 Jan - 12 Jan	British Airways
25 Jan - 02 Feb	British Airways
26 Jan - 03 Feb	British Airways
27 Jan - 04 Feb	British Airways
28 Jan - 05 Feb	British Airways
24 Jan - 01 Feb	Lufthansa
31 Jan - 08 Feb	Lufthansa
29 Jan - 06 Feb	Lufthansa
30 Jan - 07 Feb	British Airways

Also check the deals for one-way flights from Nashville 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 Nashville to Keflavik in January from 460€

Return flights