Police conducting a welfare check at a home in Colorado Springs last Friday found Christina Cornejo stabbed to death.
Cornejo’s ex-boyfriend, Brian Hedglin, was immediately named a suspect in the murder.
Police said Hedglin stabbed his 39-year-old girl to death then fled the area.
Early Tuesday morning 40-year-old Hedglin, who served in the Colorado Army National Guard with Cornejo, rode his motorbike to St George Municipal Airport in Utah while it was closed and scaled a razor wire fence.
He then shot himself in the cockpit.
Meanwhile, guards making routine checks at the airport noticed a rug over the razor fence and before they were able to investigate it they heard the sound of a plane’s engine firing up.
The guard spotted the idle aircraft and boarded it and discovered the pilot dead.
Police said Hedglin shot himself in the head.