Direct flights Sofia to Netherlands:

Sofia to Amsterdam

Sofia to Eindhoven

Flights Sofia to Netherlands with 1 stopover:

Flights via Ataturk (IST), Istanbul, Turkey
From Sofia (SOF), Bulgaria with Aerosvit Transfer at Ataturk (IST), Istanbul, Turkey Then on to Amsterdam Schiphol (AMS), Amsterdam, Netherlands with Croatia Airlines
Flights via Boryspil (KBP), Kiev, Ukraine
From Sofia (SOF), Bulgaria with Aerosvit Transfer at Boryspil (KBP), Kiev, Ukraine Then on to Amsterdam Schiphol (AMS), Amsterdam, Netherlands with Ukraine International Airlines
Flights via Larnaca (LCA), Larnaca, Cyprus
From Sofia (SOF), Bulgaria with Cyprus Airways Transfer at Larnaca (LCA), Larnaca, Cyprus Then on to Amsterdam Schiphol (AMS), Amsterdam, Netherlands with Cyprus Airways
Flights via London Heathrow (LHR), London, United Kingdom
From Sofia (SOF), Bulgaria with British Airways Transfer at London Heathrow (LHR), London, United Kingdom Then on to Amsterdam Schiphol (AMS), Amsterdam, Netherlands with British Midland
OR
Then on to Amsterdam Schiphol (AMS), Amsterdam, Netherlands with British Airways
Flights via Moscow Sheremetievo (SVO), Moscow, Russia
From Sofia (SOF), Bulgaria with Aeroflot
OR
From Sofia (SOF), Bulgaria with Aerosvit
Transfer at Moscow Sheremetievo (SVO), Moscow, Russia Then on to Amsterdam Schiphol (AMS), Amsterdam, Netherlands with Aeroflot
Flights via BenGurion International (TLV), Tel Aviv Yafo, Israel
From Sofia (SOF), Bulgaria with Aerosvit
OR
From Sofia (SOF), Bulgaria with El-Al Israel Airlines
Transfer at BenGurion International (TLV), Tel Aviv Yafo, Israel Then on to Amsterdam Schiphol (AMS), Amsterdam, Netherlands with El-Al Israel Airlines
OR
Then on to Amsterdam Schiphol (AMS), Amsterdam, Netherlands with Israir Airlines