Changelog myclimate Flight Calculator API

Version 2.0.0

Breaking Changes

  • Updated Radiative Forcing Index (RFI) from 2 to 3 in the flight calculator

This change significantly affects the calculation of total climate impact for flights

New Features

  • Added "Premium Economy" as a new seat class option for flight calculations
  • Introduced selection of specific aircraft types
  • Added 10 most common short-haul and long-haul aircraft types for European and worldwide flights


  • Updated emission factors for more accurate flight calculations
  • Refined flight calculation model to align with latest scientific studies (Lee et al. 2021, scnat 2021)
  • Adjusted weighting of short-term effects from non-CO₂ emissions in flight impact assessments

API Changes

  • New parameter: seatClass now accepts "premiumEconomy" in addition to existing options
  • New optional parameter: aircraftType allows specifying one of 10 common aircraft models
  • Response values for flight climate impact calculations will differ due to RFI update


  • Flight calculations now align more closely with Net Zero 2050 goals
  • Default calculations for flights still available if aircraft type is not specified