Chicago to Los Angeles: what the ORD to LAX corridor looks like
- Departure
- Chicago O'Hare International Airport, Chicago, the United States
- Arrival
- Los Angeles International Airport, Los Angeles, the United States
- Great-circle distance
- 2,802 km (1,513 nm)
- Typical airborne time
- 3h 45m
- Usual cruise levels
- FL330 to FL390
- Initial track
- westbound
Route overview
Chicago O'Hare International Airport (ORD) in Chicago, the United States, to Los Angeles International Airport (LAX) in Los Angeles, the United States, is a great-circle distance of 2,802 km, about 1,513 nautical miles. At typical jet cruise speeds, and with an allowance for climb, descent and approach, that works out to roughly 3h 45m of airborne time. The great-circle track leaves Chicago westbound and spends most of the flight in subtropical air.
Leaving Chicago
Chicago O'Hare sits on flat land near Lake Michigan. The lake breeze changes the low level wind through the day, and winter departures climb straight into strong continental westerlies. The great-circle track leaves ORD westbound, and the first waypoint band of the flight sits close to 40.0N 95.5W. On a sector of 3h 45m, the climb to cruise takes roughly the first twenty to twenty five minutes.
Mountain wave over the Rockies
The midpoint of the ORD to LAX track lies near 38.0N 103.2W, about 1,401 km from Chicago, which is where the corridor spends its longest continuous stretch at cruise level. The track crosses the Rocky Mountains, where westerly wind lifted over the ridge line oscillates downwind and produces mountain wave turbulence at cruise level. On windy days that gives a defined bumpy segment of roughly twenty to thirty minutes, with settled air before and after it.
Cruise altitudes on this sector
Medium haul sectors typically level off between FL330 and FL390, with a single step climb once fuel burn has lightened the aircraft. Choice of level matters because turbulence is layered: a change of two or three thousand feet often puts the aircraft into calmer air, and that is one of the first adjustments a crew will request.
Arriving into Los Angeles
Arrivals into LAX descend across desert and mountain terrain before reaching the coastal basin. The step from dry inland air into the marine layer is the usual explanation for the movement near the end of the descent. Descent normally begins around 35.9N 110.8W, roughly 701 km before LAX, and takes about half an hour from cruise level to touchdown.
Seasonal pattern
Mountain wave activity follows the strength of the winter westerlies, so the most defined wave segments occur between November and March, and mid summer crossings are typically calm.
Flying this route with less worry
Turbulence on this corridor is a comfort issue rather than a safety one. Airliners are certified to handle loads well beyond anything the atmosphere produces here, crews are trained for it, and the seat belt sign is the tool that keeps the cabin settled. What this page adds is knowing in advance: the map and Calmness Score above use current WAFS forecast data for ORD to LAX, so you can see what to expect before you board.