10 Marathon Routes That Are The Boeing 777-300ER's Longest In 2026

The Boeing 777-300ER continues to be a favored aircraft choice among airlines globally, particularly for its capabilities in undertaking extended long-distance operations. As of 2026, ten specific flight routes are anticipated to represent the longest distances regularly served by this versatile jetliner. These marathon routes will leverage the 777’s established reputation and operational efficiency. The continued popularity underscores the aircraft's enduring relevance within the commercial aviation landscape. Airlines remain committed to utilizing the 777-300ER for these demanding international journeys.