Rankings / Airports / SNA

2025 flights

John Wayne Airport (SNA)

John Wayne Airport (SNA) carries at least 5% of the passengers on 13 of the 100 busiest US routes. On those routes about 8.8 million passengers flew through it in 2025, counting each route's airport split.

CO2 on the routes through SNA

The routes through SNA 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 138 kg.

Every route that uses SNA, busiest first

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 SkyWest 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 SNA compares with one from a neighbouring airport. The share column is the part of the route's passengers that flew through SNA, from the same filings. How the figures are built.