Bulgaria
40 airports
Blagoevgrad
2 airports
Burgas
5 airports
Kardzali
3 airports
Kyustendil
2 airports
Montana
1 airport
Pernik
1 airport
Pleven
4 airports
Ruse
1 airport
Silistra
1 airport
Sofia
1 airport
| 1 member
Stara Zagora
1 airport
Targovishte
1 airport
Varna
7 airports
Veliko Tarnovo
2 airports
Vidin
1 airport
Vraca
7 airports
