- Selecting United Airlines KUL Terminal guarantees a dependable and easy journey. The airline provides easy boarding procedures, effective baggage handling, and check-in from the state-of-the-art Terminal 1 (KLIA Main). Excellent customer service, cozy lounges, and a variety of meal options are all advantages for passengers. United Airlines is the best airline for international travel because of its robust worldwide network and easy connections. It is a reliable option for travelers because of the helpful staff, roomy terminal amenities, and dedication to customer happiness.