Chrissy Teigen attends the 6th Annual Baby2Baby Gala honoring Gwyneth Paltrow in November. (Richard Shotwell/Invision/AP)

In a year filled with major in-flight meltdowns, model Chrissy Teigen chronicled yet another airplane mishap — although she managed to keep her sense of humor about the whole thing.

She and her husband, musician John Legend, planned to go to Tokyo for New Year’s, and they were headed that way from Los Angeles on an All Nippon Airways flight Tuesday when, four hours into the ride, the plane abruptly changed course and returned to LAX.

Check out that flight path:

Teigen, who is pregnant with her second child, live-tweeted the whole experience, including the airline’s reason for the about-face: A passenger ended up on the wrong flight.

She was remarkably good-natured about the whole experience and even expressed sympathy for the (apparently accidental) stowaway, who “must be mortified,” she wrote.

According to a statement from All Nippon, “during the flight, the cabin crew became aware that one of the passengers boarded the incorrect flight and notified the pilot. As part of the airline’s security procedure, the pilot in command decided to return to the originating airport, where the passenger was disembarked.”

The airline said it was researching how a passenger could have ended up on the wrong flight, which was also a question that Teigen posed to her 9 million Twitter followers.

Once the flight returned to LAX, passengers had to deplane and some were questioned by police, according to Teigen.

After spending some time in a lounge, where she ate ramen and caught up on “Real Housewives,” Teigen and the rest of the passengers once again took off just before 2 a.m. — more than 14 hours after they first left LAX.

According to flight data, ANA flight 175 is scheduled to land in Tokyo at 10:15 p.m.