Hartsfield-Jackson Atlanta International Airport (ATL)
Hartsfield-Jackson Atlanta International Airport (ATL) carries at least 5% of the passengers on 12 of the 100 busiest US routes. On those routes about 32.9 million passengers flew through it in 2025, counting each route's airport split.
CO2 on the routes through ATL
The routes through ATL run from 71 kg of CO2 per passenger (Atlanta to Orlando) to 261 kg (Los Angeles to Atlanta), with a middle of 124 kg.
Every route that uses ATL, busiest first
| Route | Flown with | Share through ATL | kg CO2 per passenger |
|---|---|---|---|
| New York to Atlanta | LGA (41%), EWR (31%), JFK (23%) | 100% | 124 |
| Atlanta to Miami | FLL (54%), MIA (46%) | 100% | 96 |
| Atlanta to Washington, DC | BWI (41%), DCA (37%), IAD (23%) | 100% | 104 |
| Atlanta to Orlando | MCO (100%) | 100% | 71 |
| Los Angeles to Atlanta | LAX (74%), SNA (12%), ONT (12%) | 100% | 261 |
| Dallas-Fort Worth to Atlanta | DFW (73%), DAL (27%) | 100% | 127 |
| Chicago to Atlanta | ORD (65%), MDW (35%) | 100% | 107 |
| Atlanta to Houston | IAH (67%), HOU (33%) | 100% | 116 |
| Atlanta to Tampa | TPA (100%) | 100% | 73 |
| Atlanta to Boston | BOS (85%), PVD (16%) | 100% | 143 |
| Atlanta to Denver | DEN (100%) | 100% | 165 |
| Atlanta to Las Vegas | LAS (100%) | 100% | 229 |
Airport references
Source: US Bureau of Transportation Statistics (BTS), T-100 traffic and Schedule T-2 fuel filings; US EPA jet-fuel CO2 factor. Route calculation method.
Airlines on these routes
By passengers on the routes above, the largest are Delta Air Lines, Frontier Airlines, Southwest Airlines, Spirit Airlines, United Airlines and American Airlines.
About these figures. The CO2 per passenger is for the whole city pair, so it covers every airport the route uses. The airline filings the figures come from don't split fuel by airport, so we can't say how a flight from ATL compares with one from a neighbouring airport. The share column is the part of the route's passengers that flew through ATL, from the same filings. How the figures are built.