Ekaterinburg Koltsovo Airport is the fifth-largest international airport in Russia, and the largest regional airport. It serves as the main gateway to Siberia and Ural, both major business centres, and is close to the Trans-Siberian Railway, which has a station in Ekaterinburg. Flights to Ekaterinburg Koltsovo Airport come from a number of cities across Russia, and a few in Europe and Asia.
Ekaterinburg is one of the largest cities in Russia, and is famous for its many theatres, libraries and museums. It'll take 30–40 minutes to get into town, but if you can, it'll be well worth exploring.
Ekaterinburg Koltsovo Airport has been renovated in recent years, and as it's currently operating below its capacity of eight million passengers per year, you won't need to queue for too long.