3,000+ Daily Passengers: United Airlines’ 10 Busiest Routes In 2023

United Airlines carried about 138 million passengers between January and October 2023, the latest month available to me on a fully broken down route-by-route basis. That is based on examining US Department of Transportation T-100 data. With a typical 4,135 daily movements (take-offs and landings combined) in these 10 months, it averaged 110 passengers per flight.