AirHint found the following cheapest return flights from Nashville (BNA) to Keflavik (KEF) in March 2026 (see full year).
Return flights
| 30 Mar - 08 Apr | Icelandair | direct | |
| 23 Mar - 30 Mar | Southwest Airlines | ||
| 07 Mar - 11 Mar | Frontier Airlines | ||
| 14 Mar - 20 Mar | Frontier Airlines |
Also check the deals for one-way flights from Nashville to Keflavik in March.
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