London to Singapore Flight CO₂
London Heathrow (LHR) → Singapore Changi (SIN) · 10,840 km
Economy CO₂
~921 kg
per passenger · estimate
Business CO₂
~3,224 kg
per passenger · estimate
Distance
10,840 km
great-circle
Driving equiv.
4,386 km
petrol car (EU avg)
Live calculation
Calculate exact CO₂ for LHR → SIN
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Route analysis
London–Singapore: emissions in context
~921 kg
Economy CO₂
Per passenger, one way. Calculated using ICAO v13.1 with fleet-average aircraft for the 10,840 km route.
4,386 km
Car equivalent
Driving a petrol car alone at EU average emissions (0.21 kg CO₂/km). The LHR–SIN flight emits the same as this many kilometres driven.
0.9 yr
Tree absorption
Years of CO₂ absorption by a mature tree to offset one economy passenger's share of a LHR–SIN flight.
About the London–Singapore route
The LHR–SIN route covers approximately 10,840 km great-circle distance between London Heathrow in United Kingdom and Singapore Changi in Singapore. In economy class, each passenger is responsible for approximately 921 kg CO₂ per flight direction, or 1,842 kg for a round trip — calculated using the ICAO Carbon Emissions Calculator v13.1 methodology with fleet-average aircraft and typical load factors.
Business class passengers on the same route emit approximately 3,224 kg CO₂ per direction — roughly 3.5× more than economy — due to the larger floor area allocated to each business class seat. The climate impact is further amplified by a Radiative Forcing Index (RFI) of 1.9×, which accounts for non-CO₂ effects of aviation at cruising altitude including contrail formation and NOₓ emissions.
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POST /v1/carbon · from=LHR · to=SIN
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