Just 64 Miles: Delta Air Lines’ 10 New Ultra-Short Flights Revealed

Delta Air Lines’ average stage length is 821 nautical miles (1,520 km) in April 2026. That’s higher than for American Airlines (as that carrier has a bigger domestic operation) but lower than for United Airlines (which is bigger on a long-haul basis). This is based on examining each carrier’s schedule submission to Cirium Diio.