Crater Lake/Klamath Regional Airport is served by 2 airlines, flying from/to 2 destinationsLongest flight from Crater Lake/Klamath Regional Airport is Klamath Falls to 🇺🇸 Portland (PDX), which takes around 1 hour and 30 minutes. On an airline like Empire Airlines. More info on this flight route (LMT-PDX).Shortest flight from Crater Lake/Klamath Regional Airport is Klamath Falls to 🇺🇸 Portland (PDX), which takes around 1 hour and 30 minutes. On an airline like Empire Airlines. More info on this flight route (LMT-PDX).