Casper/Natrona County International Airport is served by 8 airlines, flying from/to 9 destinationsLongest flight from Casper/Natrona County International Airport is Casper to 🇺🇸 Memphis (MEM), which takes around 2 hours and 10 minutes. On an airline like FedEx Express. More info on this flight route (CPR-MEM).Shortest flight from Casper/Natrona County International Airport is Casper to 🇺🇸 Grand Junction (GJT), which takes around 45 minutes. On an airline like FedEx Express. More info on this flight route (CPR-GJT).