45 mins before the boarding they close the gates and will ok longer accept passengers. There's no way to fly out the same day coz there's only 1 yes 1 flight a day going to Chicago from Las Vegas. I had to stay an extra day to catch my flight again the next day. I paid 100 bucks to rebook my freakin flight coz they close the gate early! To make matters worst I paid extra 10 bucks for my seat and 40 bucks for my carry on. Freakin pissed off and will no longer fly Frontier ever again.