claim: Flights departing airports in the United States and its territories emitted about one-quarter ( 24% ) of global passenger transport-related CO2, two-thirds of which came from domestic flights.
evidence: In 2018, global commercial operations emitted 918 million tonnes ( Mt ) of CO₂, 2.4% of all CO₂ emissions : 747 Mt for passenger transport and 171 Mt for freight operations.