Jacksonville International Airport is served by 11 airlines, flying from/to 26 destinationsLongest flight from Jacksonville International Airport is Jacksonville to 🇺🇸 St Louis (STL), which takes around 2 hours and 20 minutes. On an airline like Southwest Airlines. More info on this flight route (JAX-STL).Shortest flight from Jacksonville International Airport is Jacksonville to 🇺🇸 Jacksonville (CRG), which takes around 40 minutes. On an airline like National Airlines. More info on this flight route (JAX-CRG).