On a Boeing 777-300ER, the standard economy legroom (known as "seat pitch") generally ranges between 31 and 32 inches (79–81 cm). However, this varies significantly by airline in 2026. For example, premium carriers like Japan Airlines (JAL) and Singapore Airlines often provide a more generous 32–34 inches, making them some of the most comfortable 777 configurations in the sky. Conversely, some high-density 10-abreast (3-4-3) layouts used by budget-conscious or regional carriers may tighten the pitch to a cramped 29 or 30 inches. The seat width is also a factor; on a 777 with 10-across seating, the seats are typically about 17 inches wide, whereas the older 9-across layout offers a more spacious 18.5 inches. For travelers in 2026, the best way to secure extra legroom on this aircraft without upgrading is to book bulkhead or emergency exit row seats, which can offer over 40 inches of space, though these often come with an additional "preferred seat" fee and may have fixed armrests that slightly reduce seat width.