Whether seat G is an aisle seat depends entirely on the aircraft configuration. On a standard wide-body "twin-aisle" aircraft (like a Boeing 777 or 787) with a 3-4-3 or 3-3-3 layout, seat G is almost always an aisle seat on the right side of the center section. However, on narrow-body "single-aisle" planes (like a Boeing 737 or Airbus A320), the seats only go up to F (A-B-C | D-E-F), so seat G does not exist. In some rare 2-5-2 configurations, seat G could be a middle seat in the center block. In 2026, the best way to be certain is to check your airline's interactive seat map during booking or use a tool like SeatMaps; if you are on a long-haul flight with two aisles, there is a very high probability that seat G will give you the direct aisle access you need for a comfortable journey.