Frontier flight makes emergency landing after bathroom leak floods cabin

A Frontier Airlines flight from Denver to Detroit made an emergency landing in Chicago on Wednesday after a leaking bathroom faucet sent water flowing through part of the cabin.

Frontier Airlines Flight 3566 was diverted after a bathroom sink malfunction caused water to spread across the aircraft floor and into the aisle, New York Post reported.

Video obtained by ABC7 appeared to show water covering the cabin floor as passengers faced the disruption.

The pilots declared an emergency and contacted air traffic control.

A Frontier Airlines plane approaches Ronald Reagan Washington National Airport near Alexandria, Virginia, U.S., Dec. 24, 2025. Photo by Reuters

A plumber reportedly traveling on the plane helped shut off the faulty sink, but a large amount of water had already spilled into the cabin, CBS reported.

The aircraft landed safely at Chicago O’Hare International Airport.

Frontier confirmed that the leak originated from a faucet in the forward lavatory, causing water to flow along part of the aircraft floor.

No injuries were reported among passengers and crew, the airline said in a statement.

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