The "best" seat in a Boeing 777-300ER in 2026 depends on your cabin. In Business Class, aim for the "bulkhead" seats at the front of each section for extra footwell space, or choose "A" or "K" seats for maximum privacy in the common 1-2-1 layout. In Economy, the "Gold Standard" is the Emergency Exit Row (often rows 40 or 59 depending on the airline), which offers near-infinite legroom. However, be aware that these seats often have fixed armrests (making the seat slightly narrower) and no floor storage during takeoff. For those who value a quiet flight, the front-most Economy cabin is preferred to avoid the engine noise and the "crowding" that happens near the rear lavatories. It is a peer-to-peer favorite to check SeatGuru or AeroLOPA for your specific airline's configuration; for example, on Cathay Pacific or Emirates, certain rows might be "windowless" (like 15A or 19K), which can be a major disappointment if you were hoping for a view. Avoid the very last row, as these seats often have limited recline and are adjacent to busy galleys.