Missing airports

Please add these are all on EY routes.

Chiang Mai (CNX)

Baku (GYD)

Salleh (SLL)

Algiers (ALG)

Medan (KNO)

Thiruvananthapuram (TRV)

Kozhikode (CCJ)

Ahmedabad (AMD)

Al Alamein (DBB)

Zanzibar (ZNZ)

Yerevan (EVN)

Kazan (KZN)