Rankings / Airports
2025 flightsAirports and the routes through them
26 airports each carry at least 5% of the passengers on eight or more of the 100 busiest US routes. Pick one to see its routes and the CO2 per passenger on each.
All 26 airports
Busiest first, by passengers on the ranked routes
Passengers are counted on the 100 ranked routes only, using each route's airport split, so they're not an airport's full traffic. CO2 figures are for the city pair, covering every airport the route uses.