Pedestrian Killed by Frontier Airlines Flight During Takeoff at Denver Airport

• •A pedestrian was struck and killed by Frontier Airlines Flight 4345 during takeoff.
• •The incident resulted in a brief engine fire and minor injuries to 12 passengers.
• •The NTSB is investigating the breach of airport security and the circumstances of the incident.

On May 8, 2026, a Frontier Airlines flight struck and killed a pedestrian on the runway at Denver International Airport during takeoff. The incident occurred shortly after 11:19 p.m. local time when the pedestrian breached airport security by scaling a perimeter fence. The flight, carrying 231 passengers and crew, reported a brief engine fire that was quickly extinguished. Emergency crews evacuated the aircraft, with 12 individuals suffering minor injuries and five transported to local hospitals. The National Transportation Safety Board (NTSB) is investigating the incident, focusing on security procedures and communications. Transportation Secretary Sean Duffy confirmed the pedestrian was a trespasser and emphasized the importance of airport security. The runway remains closed as investigations continue.