Welcome to RDC’s Aviation Emissions Report for June 2025, looking at global passenger related aviation emissions with a focus on the 25 largest markets by total emissions.

With the UEFA Women's Euro 2025 taking place in Switzerland, we thought it was great opportunity to look at passenger related aviation emissions from the country.

Emission Report June 2025Focus market on this month's report: Switzerland

Highlights from this month’s report include:

  • Global passenger-related emissions in June 2025 were 70m tonnes
  • 42% of these emissions were covered by a compliance programme
  • Looking at the 25 largest markets, 13 markets in June 2025 had aviation emissions below June 2019 levels
  • Overall global aviation emissions January to June 2025 were 396m tonnes, 4m tonnes below January to June 2019 levels

Spotlight on Switzerland

  • Passenger-related emissions from airports in Switzerland were 0.48m tonnes in June 2025, -2% below 2019 levels
  • Switzerland ranked 31st largest country for emissions in June 2025
  • Qatar Airways had the lowest emissions per ASK out of the 10 largest airlines for emissions operating from Switzerland over the last 12 months
  • When looking at the largest Swiss airports for emissions over the last 12 months, airline operations from EuroAirport Basel-Mulhouse-Freiburg had the lowest emissions per ASK

Download this month’s report here

RDC has developed a new cutting-edge solution to support airports with Scope 3 emissions reporting. If you'd like to find out more get in touch with our team today to discover how RDC can provide the insights you need to stay ahead of environmental regulations and improve your sustainability efforts.

Our CO2 data which powers our monthly report is available as a dataset, via an API or as part of a subscription to Apex

Banner image by Henrique Ferreira on Unsplash

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