Passengers, if for any circumstances, you are afraid of missing your Frontier Airlines flight, then it is considered a no-show by Frontier personnel. Frontier Airlines have a No Show policy for this type of situation, and be applicable when a passenger does not show up for boarding their flight. Passengers can cancel their tickets 24 hours before the scheduled departure of their flight, but if they miss it and do not show up at boarding, then there will be no refund provided under
Frontier No Show Policy. For more detailed information, check out the blog on Frontier Airlines Policy by Airlines Pet Policy at the mentioned link for more details.