Joslin Field/Magic Valley Regional Airport is served by 1 airline, flying from/to 2 destinationsLongest flight from Joslin Field/Magic Valley Regional Airport is Twin Falls to 🇺🇸 Salt Lake City (SLC), which takes around 1 hour and 10 minutes. On an airline like Delta Air Lines. More info on this flight route (TWF-SLC).Shortest flight from Joslin Field/Magic Valley Regional Airport is Twin Falls to 🇺🇸 Salt Lake City (SLC), which takes around 1 hour and 10 minutes. On an airline like Delta Air Lines. More info on this flight route (TWF-SLC).