A FLIGHT from Honolulu to Los Angeles has been forced to turn around after a possible threat was found in a bathroom on board.

Flight radar indicates the aircraft executing a sudden U-turn about ninety minutes after takeoff to head back to Daniel K. Inouye International in Honolulu on Tuesday evening.

The flight, UA1169, left at 9:40 pm on May 20 but abruptly turned back around.

A United Airlines spokesperson reported a “potential security threat” was found on board.

The airline confirmed that the security threat was written on the bathroom mirror, KTLA reported.

No further information was provided as to what the threat said.

The spokesperson confirmed that law enforcement searched the plane after it landed.

“We are rebooking customers on another flight to Los Angeles that departs later this evening,” the spokesperson told KTLA on Wednesday morning.  

The potential security issue arose mere hours after a traveler was apprehended on a Hawaiian Airlines flight from San Diego bound for Honolulu.

Flight HA 15 was diverted off the tarmac as a passenger made a bomb threat.

The 283 passengers on board were forced to deplane around 10:30 am.

“During pushback from the gate, a guest was overheard making a threat to the safety of our aircraft,” a spokesperson for Hawaiian Airlines said.

“As a safety measure, the captain promptly guided the Airbus A330 to a secure spot on the airfield, where it was met by local and federal law enforcement, and passengers were safely disembarked.”

A passenger on board filmed armed cops on board as they searched the aircraft for explosives.

“Bomb threat was called on the plane,” the passenger captioned the video.

The flight was reportedly moved to a secure location and was checked by K-9 units.

After searching the plane, authorities discovered “nothing suspicious” on board, KTLA reported.

Navy sailor Isai Solorzano told the outlet what he saw happen on the tumultuous flight.

“One guy stood up, they immediately told him to turn around and put him in handcuffs,” Solorzano said.

“They took him away.”

The arrest happened after law enforcement came on board and asked about the owner of certain containers.