Biratnagar Airport is served by 2 airlines, flying from/to 2 destinationsLongest flight from Biratnagar Airport is Biratnagar to 🇳🇵 Kathmandu (KTM), which takes around 45 minutes. On an airline like Hawkair. More info on this flight route (BIR-KTM).Shortest flight from Biratnagar Airport is Biratnagar to 🇳🇵 Kathmandu (KTM), which takes around 45 minutes. On an airline like Hawkair. More info on this flight route (BIR-KTM).