American Airlines Vs. Delta Vs. United: Which Carrier Has The Longest Nonstop Flights?

As everyone knows, American Airlines, Delta Air Lines, and United Airlines are the US’s Big Three operators. In November/December, Cirium Diio data shows they’ll collectively have 278 daily international long-haul departures. They’ve increased from 258 in those months in 2024. With 45% of the services, United is by far the leading carrier. Delta is second (31%), followed by American (24%).