What is Air time?
Air time definition and meaning on Dictionary terms:
the particular time that a program is broadcast or scheduled for broadcast: The airtime for the newscast is 10 p.m.
the time during which a broadcast takes place: The airtime for the new show is from 10 to 10:30 p.m.
a block of such time sold by a radio or television station to an advertiser, allotted to a political candidate, etc.: The company bought three minutes of airtime.