Video of fog-like mist inside aircraft goes viral, airline clarifies

In a statement, Delta said that it was common for the formation of mist inside an airplane cabin when the cool air inside meets with much warmer air outside.

While there was no cause for concern, some passengers told CNN that the airline’s flight crew did not clarify their doubts.

A passenger named Amanda Goncalves was quoted as saying that the flight crew did not make an announcement and instead went on to joke about it, saying that they were practising for Halloween.