Police responded to the crash in the 17000 block of Dawkins Road about 11:30 p.m., the Allen County Sheriff’s Department said.
A 21-year-old man was driving the vehicle west on Dawkins Road with the 20-year-old woman in the passenger seat when the vehicle ran off the road and hit an embankment, police said.
The vehicle became airborne and struck two trees.
The woman died at the scene. The man was not injured. Both were wearing seat belts at the time of the crash, police said.
Their identities had not been released Wednesday afternoon.