Only 59% Full: Delta Air Lines’ 10 Surprisingly Empty Long-Haul Routes Revealed [List & Map]

Delta Air Lines is the US’ second-largest long-haul operator in terms of passengers. In the 12 months to March 2026, the US Department of Transportation (DOT) shows that it carried 17.1 million such passengers. The airline’s average long-haul load factor was 84.9%.