Airtime rhymes with:
wartime, alltime, anytime, bedtime, centime, christmastime, daytime, dinnertime, downtime, everytime, flextime, fulltime, funtime, halftime, lifetime, longtime, lunchtime, maritime, mealtime, meantime, movietime, nighttime, noontime, overtime, parttime, pastime, peacetime, primetime, quicktime, ragtime, schooltime, showtime, sometime, springtime, summertime, wartime, wintertime
Airtime sounds like:
aardema, aerodyne, ardeen, arden, ardene, ardin, ardine, ardoin, ardoyne, arduini, aretina, ariadne, arrhythmia, artino, artman, arton