Frontier Airlines flight diverted to Chicago after severe lavatory leak

A Frontier Airlines flight traveling from Denver to Detroit was forced to make an emergency landing at O'Hare International Airport in Chicago on November 13, 2026, following a severe water leak. The incident began when a malfunction in the forward aircraft lavatory caused water to flood the passenger cabin, creating an unsafe environment for travel.

Upon discovering the uncontrolled water flow, the pilot declared an emergency, citing significant concerns that the liquid could compromise the aircraft's critical electronic systems. Amid the disruption, a passenger identifying as a plumber intervened and successfully shut off the water supply, though not before significant flooding had already occurred. Social media footage captured the water flowing from the lavatory while passengers observed the situation. No injuries were reported, and the flight was diverted to ensure the safety of all individuals on board as a precautionary measure against potential mechanical failure.