The cheapest flight to Sofia you can get by boooking 33 days before departure.
The most popular airlines on the route Nice - Sofia: Alitalia (AZ), Lufthansa (LH), Iberia (IB).
The cheapest flights you can book on the route Cote d'Azur (NCE) - Sofia Airport (SOF).
There is no direct flight on the route from Nice to Sofia
Il volo con scalo più breve dura 4h 40min.