Los Angeles International Airport (LAX)
Los Angeles International Airport (LAX) carries at least 5% of the passengers on 16 of the 100 busiest US routes. On those routes about 33.9 million passengers flew through it in 2025, counting each route's airport split.
CO2 on the routes through LAX
The routes through LAX run from 53 kg of CO2 per passenger (Los Angeles to Las Vegas) to 406 kg (New York to Los Angeles), with a middle of 171 kg.
Every route that uses LAX, busiest first
| Route | Flown with | Share through LAX | kg CO2 per passenger |
|---|---|---|---|
| New York to Los Angeles | JFK (56%), EWR (36%) | 92% | 406 |
| Los Angeles to San Francisco | SFO (30%), SJC (10%) | 41% | 75 |
| Los Angeles to Chicago | ORD (64%), MDW (11%) | 74% | 225 |
| Los Angeles to Dallas-Fort Worth | DFW (44%), DAL (8%) | 52% | 171 |
| Los Angeles to Las Vegas | LAS (46%) | 46% | 53 |
| Los Angeles to Honolulu | HNL (87%) | 87% | 321 |
| Los Angeles to Denver | DEN (44%) | 44% | 130 |
| Los Angeles to Houston | IAH (60%), HOU (13%) | 72% | 183 |
| Los Angeles to Atlanta | ATL (74%) | 74% | 261 |
| Los Angeles to Seattle | SEA (49%) | 49% | 151 |
| Los Angeles to Washington, DC | IAD (45%), BWI (27%), DCA (24%) | 95% | 290 |
| Los Angeles to Miami | MIA (63%), FLL (37%) | 100% | 292 |
| Los Angeles to Phoenix | PHX (37%) | 37% | 74 |
| Los Angeles to Salt Lake City | SLC (51%) | 51% | 106 |
| Los Angeles to Portland | PDX (54%) | 54% | 138 |
| Los Angeles to Sacramento | SMF (33%) | 33% | 92 |
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 Southwest Airlines, United Airlines, American Airlines, Delta Air Lines, Alaska Airlines and JetBlue.
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 LAX compares with one from a neighbouring airport. The share column is the part of the route's passengers that flew through LAX, from the same filings. How the figures are built.