AirHint found the following cheapest return flights from Keflavik (KEF) to Sofia (SOF) in March 2026 (see full year).
Return flights
| 02 Mar - 09 Mar | Wizz Air | ||
| 21 Mar - 25 Mar | easyJet | ||
| 12 Mar - 21 Mar | easyJet | ||
| 19 Mar - 28 Mar | easyJet |
Also check the deals for one-way flights from Keflavik to Sofia in March.
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