Well i had bought a ticket in California were i live i went to mexico on vacation when i was ready to return home my flight was going to leave at 344pm, i got to the airport a little before 130pm. I stood in line and the security was taking a while to check luggage, when it came my turn the security told me to see the man at the desk. I went to talk to him he told me the window closes at 3pm i looked at the clock and it was 303 pm. He told me i had to fly the next day well i needed to get home so i had to buy a ticket on another airline to get home it cost me 400 dollars and i had to wait at the airport 8 hours. I tried to deal with FRONTIER AIRLINES but they want to pass the blame on security i went to the bbb and they still refuse to give me a full refund. I think if you want to fly and have customer service you should try another airline except Frontier Airlines or you could be out money and maybe stranded!