AirHint found the following cheapest return flights from Nashville (BNA) to Keflavik (KEF) in July 2025 (see full year).

Return flights

16 Jul - 23 Jul	jetBlue
10 Jul - 16 Jul	Spirit Airlines
14 Jul - 18 Jul	KLM
07 Jul - 14 Jul	Delta
06 Jul - 21 Jul	Air France
23 Jul - 30 Jul	Icelandair	direct
16 Jul - 23 Jul	Icelandair	direct
18 Jul - 21 Jul	Air France
04 Jul - 09 Jul	Delta
14 Jul - 18 Jul	Icelandair	direct

Also check the deals for one-way flights from Nashville to Keflavik in July.

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 July from 447€

Return flights