Flight passenger mistakenly boards wrong plane, lands in surprising country after many hours

A United Airlines spokesperson confirmed the incident to Fox News Digital.

"We followed up with the airport to understand how this happened, reached out directly to the customer to apologize for his experience and offered travel credits and reimbursement," the spokesperson said.

The passenger reportedly realized mid-flight that he or she was on the wrong flight - and asked the flight attendant why the trip to Houston was taking six hours, rather than just over three hours.

A Reddit user posted the mishap in the "r/unitedairlines" forum, sparking a debate about users.

"Yeah… [if] by 6 hours you haven't arrived in Houston, something is wrong," wrote one person. "I'd love to go to Japan by mistake, though."

A user wrote, "My childhood fear … I used to travel at that age and always checked the flight map on screen [to see if I was] going to the correct destination."

"How do you accidentally board the wrong flight? There are so many things this guy should've noticed," said one individual. 

Another user commented, "You would be surprised how clueless people are."