AirHint found the following cheapest return flights from Nashville (BNA) to Keflavik (KEF) in March 2026 (see full year).
Return flights
| 25 Mar - 01 Apr | jetBlue | ||
| 20 Mar - 27 Mar | jetBlue | ||
| 24 Mar - 31 Mar | jetBlue | ||
| 21 Mar - 28 Mar | jetBlue | ||
| 23 Mar - 30 Mar | jetBlue | ||
| 22 Mar - 29 Mar | jetBlue | ||
| 12 Mar - 23 Mar | Icelandair | ||
| 15 Mar - 20 Mar | Icelandair |
Also check the deals for one-way flights from Nashville to Keflavik in March.
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