Scoot, Qatar, and Ryanair Top Cirium Global Airline Emissions Rankings in 2025Contributed by: Business WireLogoImagesEmeraldSky Gold 2025: Awarded to the world’s top five most emissions-efficient airlines, based on CO₂ per available seat kilometre (ASK).EmeraldSky Silver 2025: Awarded to airlines ranked 6–10 globally for emissions efficiency, based on CO₂ per available seat kilometre (ASK).EmeraldSky Bronze 2025: Awarded to airlines ranked 11–15 globally for emissions efficiency, based on CO₂ per available seat kilometre (ASK).TagsOther TravelTransportationSustainabilityEnvironmentTravelOther TransportAirTransportCirium
