Los Angeles to Chicago Midway Turbulence Forecast

LAX → MDW · 1,747 miles · ~3h 60m

What to Expect

Your flight from Los Angeles to Chicago Midway crosses a variety of landscapes, each with its own potential for turbulence. Initially, you'll fly over the Mojave and Sonoran Deserts where thermal turbulence, caused by rising warm air, can create some bumps. As you move northeast, you'll encounter the Central Rockies and Front Range, where mountain wave turbulence can occur as air flows over the peaks. Further along, over the Great Plains, you might experience clear-air turbulence (CAT), a phenomenon often occurring in the absence of clouds. Depending on the time of year, you could also be flying through Tornado Alley, where severe convective turbulence from thunderstorms is possible. Approaching Chicago, you'll cross the Great Lakes, where lake-effect turbulence can develop; the Mississippi Valley, where convective turbulence is common; and the Ohio Valley, which is subject to frontal turbulence. These weather patterns are well-understood and routinely navigated by pilots.

Between Los Angeles and Chicago Midway, the flight path crosses the Central Rockies of Colorado and Utah. This area is one of the most turbulence-prone zones in the U.S., with mountain wave activity reported on more than half of winter days. Waves can propagate far downstream, meaning turbulence may begin well before or after the visible peaks.

Turbulence Factors on This Route

• Thermal Turbulence: Extreme desert heating generates strong thermal updrafts that cause low-to-mid-level turbulence, especially in summer afternoons.
• Mountain Wave Turbulence: The Central Rockies produce frequent, sometimes severe, mountain waves that can extend 100+ miles downstream.
• Clear-Air Turbulence (CAT): The jet stream frequently meanders over the Great Plains, producing wind shear and clear-air turbulence at cruising altitudes.
• Severe Convective Turbulence: Tornado Alley supercells produce some of the most intense convective turbulence in North American aviation.

When Is This Route Bumpiest?

The early fall offers the smoothest rides on this route. During this period, the weather patterns mentioned are generally less intense, resulting in fewer bumps. Summer, early spring, spring, early summer, late fall, and early winter tend to be more turbulent. Summer brings convective turbulence, especially in Tornado Alley and the Mississippi Valley, while winter and early spring can see increased mountain wave turbulence over the Rockies. Frontal systems in the Ohio Valley can also cause turbulence during the colder months. These seasonal variations are important to keep in mind when planning your trip.

Tips for This Flight

For the smoothest possible flight, aim for a morning departure, as daytime heating often increases thermal activity and storm development. Any turbulence you do encounter on this route will likely feel like driving on a road with potholes, rather than a sudden drop. Choose a seat over the wing, as this area of the plane experiences less motion; also, remember to stay hydrated. Staying hydrated can help you relax and feel more comfortable. With these tips, you can feel more prepared and confident for your flight.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.