Flying first class on a single domestic round trip can contribute more greenhouse gas emissions than a year of driving - Green Car Congress
How much CO₂ is emitted during a flight? – myclimate has updated the online flight calculator
Emissions calculator - atmosfair
Grounded (by beef)! A different take on aviation carbon accounting - International Council on Clean Transportation
Protocol to calculate aircraft emissions for international air routes in South America - ScienceDirect
Travalyst Working with IATA on Flight CO2 Emission Calculations
The leading Carbon Emissions Calculator - IBA NetZero
Environmental Tools (E-tools)
Profs Who Fly: Travel Emissions Calculator
IBA on Twitter: "Moving on to ESG. It's important to recognise that aviation drove just 2.4% of emissions in 2019. Insights from our Carbon Emissions Calculator and experts are helping the industry
Travel Carbon Footprint Calculator: Flights, Rental Car, Hotel