Allegiant Airlines Customer Service provide our customers with top-class service 24*7 .Our main focus has always been to rare the limits of time and place. And to know about our check-in policy, you can visit and look for it on our website. We are here to help your queries. Just  dial our Allegiant Airlines helpline number which is +1 (702) 765-4833.Contacting us also allows you to get proper information on other topics such as Unaccompanied Minor, baggage policy, date change, flight cancellation, check-in policy, etc.