Quick answer

How much CO2 does my flight emit?

Roughly 90g CO2 per passenger per km in economy. Short flight YUL-Toronto ≈ 0.05 tonnes. YUL-Paris ≈ 0.6 tonnes. YUL-Tokyo ≈ 1.0 tonnes.

🌳 Flight Carbon Footprint

Per passenger per flight, including aviation radiative forcing.

Reviewed by: Montreal Tips editorial team · Last updated: May 13, 2026

Note: Estimates only — verify with official sources before booking.