Economy are seats getting smaller, but also modern airplanes are much fuel efficient. "Between 1950 and 2018, efficiency per passenger grew from 0.4 to 8.2 RPK

Economy are seats getting smaller, but also modern airplanes are much fuel efficient. "Between 1950 and 2018, efficiency per passenger grew from 0.4 to 8.2 RPK per kg of CO2" https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft https://en.wikipedia.org/wiki/Fuel_economy_in_aircraft https://www.explore.com/1762212/reason-why-plane-experience-flight-more-uncomfortable-smaller-seats/ https://www.explore.com/1762212/reason-why-plane-experience-...