ICAO Methodology v13.1

    Lisbon to New York Flight CO₂

    Humberto Delgado Airport (LIS) → John F. Kennedy International (JFK) · 5,430 km

    Economy CO₂

    ~489 kg

    per passenger · estimate

    Business CO₂

    ~1,712 kg

    per passenger · estimate

    Distance

    5,430 km

    great-circle

    Driving equiv.

    2,329 km

    petrol car (EU avg)

    Live calculation

    Calculate exact CO₂ for LISJFK

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    Route analysis

    LisbonNew York: emissions in context

    ~489 kg

    Economy CO₂

    Per passenger, one way. Calculated using ICAO v13.1 with fleet-average aircraft for the 5,430 km route.

    2,329 km

    Car equivalent

    Driving a petrol car alone at EU average emissions (0.21 kg CO₂/km). The LISJFK flight emits the same as this many kilometres driven.

    0.5 yr

    Tree absorption

    Years of CO₂ absorption by a mature tree to offset one economy passenger's share of a LISJFK flight.

    About the LisbonNew York route

    The LISJFK route covers approximately 5,430 km great-circle distance between Humberto Delgado Airport in Portugal and John F. Kennedy International in USA. In economy class, each passenger is responsible for approximately 489 kg CO₂ per flight direction, or 978 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 1,712 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=LIS · to=JFK

    FAQ

    Lisbon to New York — Flight Emissions FAQ