One of the most remarkable feats of long-haul narrow-body flying comes from Scandinavian Airlines (SAS) Flight SK925, which connects Copenhagen, Denmark, to Washington, DC, US. Covering a distance of 3540 nautical miles in approximately 9 hours and 30 minutes, this flight is operated by an Airbus A321neo (A321LR).

The Airbus A321neo—specifically the A321LR (Long Range) variant—has significantly expanded the capabilities of narrow-body aircraft, with its longest commercial routes now regularly crossing the Atlantic and Central Asia. As of early 2026, the longest nonstop commercial flight operated by an A321neo is Air Astana’s service between Almaty (ALA) and London Heathrow (LHR), which covers a distance of approximately 3,470 nautical miles (roughly 4,000 miles) and has a scheduled flight time of around 9 hours and 30 minutes. Other top contenders include JetBlue’s transatlantic services, such as the New York JFK to Paris CDG and Boston to Milan Malpensa routes, both of which push the 3,400 to 3,800-mile range. These flights are made possible by the addition of extra fuel tanks (ACTs) and the aircraft’s high fuel efficiency, allowing airlines to serve long-haul "niche" markets with much lower operational costs than traditional wide-body jets like the Boeing 787 or Airbus A350.