Irgo's odyssey began Monday when his owner, Kara Swindle, dropped him off at the airport in Portland, Oregon ahead of the family's move to Wichita.
Irgo, a ten-year-old German Shepherd, was reunited with the Swindle family on Thursday, March 15.
But that wasn't the case.
The owner found a Great Dane that was supposed to on his way to Japan instead of her dog.
United said "An error occurred during connections in Denver for two pets sent to the wrong destinations..."
The German Shepard reportedly landed safely in east Asia but it was originally feared that Irgo might be put in quarantine there for as much as two weeks before he can be sent back.
OJ Simpson's Hypothetical Confession on Double Murder in 2006
Nicole came out, things got heated, she told O.J.to get the f*** off her property, and then he says Nicole fell and hurt herself. Simpson alleged that Charlie came to his house on the night of June 12 and told him stories about Nicole's wild partying.
The news of Irgo's unplanned Odyssey comes as United admits a dog died after a flight attendant forced it to travel in an overhead bin on a Houston-to-New York flight. She said the dog seemed healthy and happy to be home.
Earlier this week the airline was also criticised as a puppy died during a flight from Houston to NY, after a flight attendant told the owner to pace its carrier in an overhead locker. However, the dogs ended up on the wrong flights.
They kept in touch over Facebook until both dogs were safely returned, she told DailyMail.com on Friday. We've been so adamant that they send us pictures every hour letting us know how he is because I don't want anything happening. "She said, 'Oh, I'm sorry".
Twitter has since exploded with violent criticism of United Airlines for these two incidents.
Swindle, however, expressed her worry about the safety of her 10-year-old dog flying back from Japan to Kansas. "I've cried too much". The airline said the kennels were similar.
Swindle added that while she is grateful the airline has apologized to her and her family, she plans to sue them to ensure the same mistake does not happen again. "I'm hoping they can put something into policy so that this will never happen again".