Frontier Airlines flight makes emergency landing after overflowing sink floods cabin

The New York Post reported that Frontier Airlines Flight 3566 was forced to make an emergency landing in Chicago on Wednesday after an overflowing bathroom sink flooded the passenger cabin. The aircraft was traveling from Denver to Detroit when the pilots declared an emergency due to the burst faucet. [1]

Audio broadcasted by LiveATC.net captured a pilot issuing a mayday call to air traffic controllers during the flight, according to the New York Post. The pilot stated that the forward lavatory sink was spraying so much water that it was flooding the entire cabin area in the back, adding that the crew was worried about electronics. [1]

Footage obtained by ABC7 showed water soaking the floor and seeping down the aisle of the plane, the New York Post reported. Frontier Airlines is an ultra-low-cost American carrier based in Denver, Colorado, that operates flights to over 120 destinations. [1][2]

As FTMQ News reported earlier, Frontier Airlines faced another cabin incident in October 2026, when a flight attendant had to push a passenger away from an emergency exit door after a plane was stuck without air conditioning at an Atlanta gate. [5]