Chaudhary Charan Singh International Airport is served by 10 airlines, flying from/to 16 destinationsLongest flight from Chaudhary Charan Singh International Airport is Lucknow to 🇸🇦 Riyadh (RUH), which takes around 5 hours and 55 minutes. On an airline like Flynas. More info on this flight route (LKO-RUH).Shortest flight from Chaudhary Charan Singh International Airport is Lucknow to 🇮🇳 Varanasi (VNS), which takes around 1 hour. On an airline like IndiGo. More info on this flight route (LKO-VNS).