Los Angeles to Boise Turbulence Forecast

LAX → BOI · 675 miles · ~1h 51m

What to Expect

The Los Angeles to Boise flight is a relatively short hop north, but it crosses some varied terrain that can sometimes lead to a bit of chop. Immediately after takeoff from LAX, you might experience some thermal turbulence rising off the Mojave and Sonoran Deserts, especially on sunny days. These are pockets of warm air rising, creating minor bumps. As you approach the Sierra Nevada, keep in mind that mountain wave turbulence is common. The wind flowing over the mountains can create waves in the atmosphere, like ripples in a pond. Finally, expect the possibility of more mountain wave turbulence as you fly over the Northern Rockies approaching Boise. Pilots are very familiar with these patterns and use weather forecasting and radar to navigate the smoothest possible path. These are normal parts of flying this route.

Flights between Los Angeles and Boise cross the Sierra Nevada, a steep mountain barrier in eastern California. The Sierra generates some of the most intense rotor and wave turbulence in the world — the famous "Sierra Wave" can reach the stratosphere. East-side downdrafts are especially sharp, and flights into or out of Reno or the Central Valley often feel the effects.

Turbulence Factors on This Route

• Mountain Wave Turbulence: The Sierra Nevada produces the well-known Sierra Wave, one of the strongest mountain wave systems in North America.
• Thermal Turbulence: Extreme desert heating generates strong thermal updrafts that cause low-to-mid-level turbulence, especially in summer afternoons.

When Is This Route Bumpiest?

For the smoothest flight, aim for summer and early fall. The weather tends to be more stable then, reducing thermal and mountain wave activity. Winter, spring, and late fall can be a bit bumpier. During these times, stronger winds interacting with the Sierra Nevada and Northern Rockies increase the likelihood of mountain wave turbulence. Spring also brings increased thermal activity over the deserts as the sun gets stronger, adding to the possibility of light turbulence early in the flight.

Tips for This Flight

If you're concerned about turbulence, booking a morning flight often means fewer thermal updrafts from the desert, leading to a smoother ride. Any turbulence you encounter on this route is likely to feel like driving over a slightly bumpy road, rather than a dramatic drop. For extra comfort, choose a seat over the wing; it's the most stable part of the plane. Remember to stay hydrated and focus on slow, deep breaths. The crew is well-trained to handle any situation, and you'll be in Boise before you know it.

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Forecasts based on NOAA HRRR and GFS atmospheric model data.