A woman somehow managed to get on a Delta flight without identification or a boarding pass, causing a three-hour delay in Florida over the weekend, officials said.

The airline apologized in a statement Sunday after the unidentified woman got on an Atlanta-bound flight Saturday at Orlando International Airport, sat in another person’s assigned seat and flatly refused to move, WFTV reported.

“She said very bluntly, ‘I’m not moving,’” another traveler told the station, adding that a supervisor and a pilot tried unsuccessfully to get the woman out of the 15th-row seat.

After telling crew members she didn’t have her boarding pass, the woman tried to show a photo of herself on her cellphone when asked for identification. The pilot called cops when the woman insisted that the photo could serve as her government-issued ID, the station reported.

“They eventually told her, ‘You’re breaking federal law,’” the passenger recalled.

The woman was dragged off the plane while cursing out the flight crew, WFTV reported.

“We were stopped pretty quickly, and the pilot explained it was because the lady was not cooperating with [Transportation Security Administration] and she did not have a ticket to any airline at all,” the passenger said. “They could not figure out how she even got on the plane.”

All passengers had to deboard following the incident. TSA agents and canines then cleared the aircraft after an extensive search, including all luggage on the flight.

In a statement to The Post, Delta Airlines apologized to passengers on Flight 1516 for the three-hour delay and the second security screening.

“Delta is working with local law enforcement and the Transportation Security Administration on their investigation and we are conducting our own review of this as well,” the statement read. “Safety and security is always our top priority.”

It’s unclear how the woman got onto the plane, but TSA employees did search her during standard screening at the airport, a spokeswoman told The Post.

“We are working with law enforcement to investigate the incident at the plane and will not be providing any additional information at this time,” TSA spokeswoman Lisa Farbstein wrote in an email early Monday.