Yerevan International Airport ``Zvartnots" (city code EVN) is within 3 to 4 hour flight from major European cities.
The following is an incomplete list of airlines flying to Yerevan:
Air France, Austrian Airlines, Aeroflot, Polish LOT, Aegean, Quatar Airways, and Ukrainian International.
From Zvartnots to city center:
A Yandex taxi can be ordered at the exit from the arrival hall (the cost is about 4000 AMD = 8 Euro). It is not recommended to take taxis driven by private drivers. There are always regular taxis available at the entrance to the airport building.
Buses leave for the city every 30 minutes (every 60 minutes at night) and the cost is 300 AMD = 0.6 Euro. The bus stops in the center of the city at locations such as the "Theater of Opera and Ballet" or "Metro Yeritasardakan", see also the web page of the bus company.