‌Luckily, there's now a way to figure out which budget airline offers the widest seats, ensuring you don't have to sacrifice comfort. crunched the numbers to identify which airlines offer the roomiest seats, helping you get the most bang for your buck. View 2 Images A small seat can ruin your flight experience (Image: Getty Images/iStockphoto)According to the experts, the airlines offering the widest economy seats include Wizz Air, TAP Portugal, easyJet, and Lufthansa, all boasting widths of 18 inches. Below is a breakdown of airline seat width and legroom in inches. Airlines seat width and legroomBelow are airline seat width and legroom in inches.