Disturbance prevailed on its flight 2477 United Airlines when during the flight crew members started vomiting and passengers asked for masks.

The flight left Houston Sunday morning and was bound for Boston but had to land early in Washington so the plane could undergo “biological cleaning” after a passenger became ill, United told The Post.

The condition was so serious that crew members and other passengers began to fall ill themselves, resulting in pilots to request a route diversion.

“I talked to the crew and it looks like things are pretty bad back there. The crew is vomiting and the passengers around are asking for masks,” a crew member was heard saying over the radio.

“There is a biological hazard, so I think we should land as soon as possible,” he added.

The plane landed safely at Washington Dulles Airport, where none of the plane’s 155 passengers or six crew members required medical attention.

“The aircraft is currently undergoing deep cleaning and we are working to get passengers to Boston soon,” the airline said.