Karol Grenier, 66, died late Sunday afternoon after the crash on westbound Interstate 84 near Wendell.
According to Idaho State Police, Grenier was driving a 2002 Mazda Tribute SUV when she went off the left shoulder, overcorrected, went off the right shoulder, hit a fence, then rolled.
Grenier was ejected from the SUV. She died mid-flight on an air ambulance as it flew her to Saint Alphonsus Regional Medical Center in Boise, according to ISP.
Three children were in the vehicle, but did not require medical care at a hospital, ISP said.
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The children wore seatbelts, according to ISP. Grenier was not.