Take any of the below bus lines to get to Rockefeller Center at Fifth Avenue and 50th Street.
From Fifth Avenue:
Take the M1, M2, M3, M4 or M5 bus to 50th Street. Buses run north and south.
Take the M6 or M7 bus. Exit at 50th Street and walk east to Rockefeller Center. Buses run north and south.
From 49th Street:
Take the M27 or M50 bus. Exit anywhere between Fifth Avenue and Seventh Avenue. Buses run east and west.