Newark Liberty International Airport (EWR)
Newark Liberty International Airport (EWR) carries at least 5% of the passengers on 19 of the 100 busiest US routes. On those routes about 22.0 million passengers flew through it in 2025, counting each route's airport split.
CO2 on the routes through EWR
The routes through EWR run from 76 kg of CO2 per passenger (New York to Boston) to 414 kg (New York to San Francisco), with a middle of 153 kg.
Every route that uses EWR, busiest first
| Route | Flown with | Share through EWR | kg CO2 per passenger |
|---|---|---|---|
| New York to Miami | FLL (16%), MIA (14%) | 30% | 158 |
| New York to Los Angeles | LAX (36%), SNA (5%) | 41% | 406 |
| New York to Orlando | MCO (34%) | 34% | 141 |
| New York to San Francisco | SFO (48%) | 48% | 414 |
| New York to Atlanta | ATL (31%) | 31% | 124 |
| New York to Chicago | ORD (29%) | 30% | 125 |
| New York to Houston | IAH (43%) | 43% | 197 |
| New York to Denver | DEN (38%) | 38% | 213 |
| New York to West Palm Beach | PBI (31%) | 31% | 166 |
| New York to Dallas-Fort Worth | DFW (26%) | 26% | 203 |
| New York to Charlotte | CLT (31%) | 31% | 117 |
| New York to Las Vegas | LAS (42%) | 42% | 284 |
| New York to Tampa | TPA (31%) | 31% | 153 |
| New York to San Juan | SJU (35%) | 35% | 202 |
| New York to Boston | BOS (29%) | 30% | 76 |
| New York to Washington, DC | IAD (19%), DCA (11%) | 30% | 86 |
| New York to Detroit | DTW (31%) | 31% | 106 |
| New York to Raleigh-Durham | RDU (30%) | 30% | 102 |
| New York to Nashville | BNA (29%) | 29% | 150 |
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 United Airlines, Delta Air Lines, JetBlue, American Airlines, Spirit Airlines and Republic Airways.
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 EWR compares with one from a neighbouring airport. The share column is the part of the route's passengers that flew through EWR, from the same filings. How the figures are built.