Komsomolskaya Ploshchad is home to three of Moscow's mainline railway stations: Leningrad Station, from which trains run to St. Petersburg and northern Russia; Yaroslavl Station, the terminal for most of the Trans-Siberian services; and Kazan Station, from where trains depart for Kazan, Central Asia, and much of southern Russia. Komsomolskaya Metro Station, which is on the brown circle line and the red line, is between Leningradskiy and Yaroslavskiy Stations, less than five minutes' walk from the Hilton.
Sheremetyevo International Airport is roughly 32km from the Hilton Leningradsky, and the drive to/from the hotel will take 40-90 minutes depending on traffic. Domodedovo Airport is further away – roughly 47km – and the drive is likely to take at least 90 minutes.