This is why we aim to focus on the particular question of how much wider is premium economy than standard economy. For starters, some will opt for a 2-4-2 setup in premium economy, which significantly enhances comfort compared to the standard 3-3-3 or 3-4-3 setup in standard economy. American Airlines often highlights that its premium economy seats sit at the high end of the range, where premium economy commonly lands around 18.5-19.5 in (47-49.5 cm). Credit: ShutterstockCompared with the three major US legacy carriers, the global premium economy width trends are not radically different on average. Japan Airlines' premium economy seats are often cited as being around 48 cm (18.9 in), closer to the US norm.