A United Airlines plane with around 200 passengers on board was forced to evacuate over a bomb threat at Denver airport – the second such security scare in a matter of days.

Travelers bound for Washington Dulles disembarked the plane Sunday night while the jet was screened over a “security concern,” a United Airlines spokesperson told 9News.

Footage, obtained by Storyful, showed cop cars surrounding the jet and emergency crews standing on steps by the plane’s doors.

Passengers were given food inside the terminal and no explosive was found. 

The Airbus A321neo twin jet plane left Denver just after 11:30 p.m. local time – more than five and half hours later than planned – and landed at Dulles at 4:28 a.m. Monday.

The scare came just a day after a United Airlines flight heading to LaGuardia was diverted to Pittsburgh over fears of a potential bomb on board. 

“We are going to have to start treating this as a potential bomb… we are going to need to go and start a diversion and get things settled. It’s a beeping noise, sequential, one beep per second,” a crew member said, in audio posted to liveatc.com.

The Boeing 737‘s 159 passengers and 6 crew members exited the plane safely via slides and no injuries were reported, a United representative told The Post in a statement.

The Pittsburgh FBI bomb technicians and Special Agents, local police and the Allegheny County bomb squad were dispatched to the scene to investigate, WCVB reported.

The Allegheny County Police Bomb Squad told the outlet its Explosive Ordinance Disposal team and bomb sniffing dogs conducted a sweep which had “negative results” for bombs.

“Our EOD team and K9s conducted a sweep of the aircraft, passengers and luggage with negative results,” the department told the outlet.