The pilot of Flight 175 chose to return to the originating airport as part of the airline's security procedures, ANA said in statements that apologized to passengers but supported the decision.
Chrissy Teigen and her husband John Legend had a flight to remember.
Online flight tracker Flightaware showed the plane making a sharp turn over the Pacific, just over four hours out of LA, and returning.
"During the flight, the cabin crew became aware that one of the passengers boarded the incorrect flight and notified the pilot".
The airline, All Nippon Airways (ANA), said only that there had been a problem with a customer's "flight arrangement".
Chrissy Teigen took a disastrous "flight to nowhere" Tuesday night.
- christine teigen (@chrissyteigen) December 27, 2017Lmao after all this I will have spent 8 hours on a flight to nowhere.
An ANA spokesperson has said that the situation was being researched to determine exactly how the passenger ended up barding the wrong flight, ABC News reported.
I won't be able to sleep until I know how this person figured out they were on the wrong flight. That's all I ask. 150 people have been majorly inconvenienced, please, just tell me", she wrote, later adding, "They keep saying the person had a United ticket.
She joked later that she was in a room with "water and a tv".
The Twitter rant began with Teigen explaining the situation, expressing frustration.
"Taking off! Please don't be the same menu please don't be the same menu", she tweeted. The total time for the flight to take off and return was just over eight hours.
It may seem outrageous, but it is surprisingly common for planes to return to their point of origin midway through a flight, analysts said.