AirHint found the following cheapest return flights from Belfast (BFS) to Keflavik (KEF) in March 2026 (see full year).
Return flights
| 18 Mar - 22 Mar | easyJet | ||
| 13 Mar - 17 Mar | easyJet | ||
| 17 Mar - 21 Mar | Ryanair | ||
| 06 Mar - 08 Mar | easyJet |
Also check the deals for one-way flights from Belfast to Keflavik in March.
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