Flight Emissions Calculator

This calculator estimates flight emissions using ICAO methodology, factoring in distance, travel class space allocation, and the enhanced climate impact of high-altitude emissions.

1. 1

   Step 1

   Select your travel class from the dropdown

2. 2

   Step 2

   Enter the total flight distance in kilometers

3. 3

   Step 3

   Enter the number of passengers traveling

4. 4

   Step 4

   Click Calculate to see total and per-passenger emissions

5. 5

   Step 5

   View offset requirements and costs

• 1

  Long-haul flights are more efficient per km than short-haul

• 2

  Business class emissions are 2.5x economy due to space

• 3

  First class produces 5x the emissions of economy class

• 4

  Direct flights have lower emissions than connecting routes

• 5

  Average transatlantic flight: 1-2 tonnes CO₂ per passenger

• Forgetting round-trip flights double your emissions

• Not including connecting flights in calculations

• Ignoring the radiative forcing multiplier for altitude effects

• Underestimating premium cabin impact on emissions