Fly into Sheremetyevo Airport (SVO), the closest airport, located 11.3 mi (18.2 km) from the city centre. If you're unable to find a flight that fits your schedule, you might consider flying into Moscow (VKO-Vnukovo Intl.), which is 19.8 mi (31.8 km) away.
If you'd rather travel by train, make your way to Moscow Okruzhnaya Station or Moscow Ostankino Station to see more of the city. You might consider catching a ride on the metro at Vladykino Station for ease of access to the rest of the city.