To rectify their mistake, the pilot diverted the entire flight to OH to drop the animal off safely.
Before the diversion, the pilot announced the plane was landing in Akron because of "mis-boarded cargo", a passenger told WUSA9-TV in Washington, D.C.
Airline officials said it offered compensation to all passengers.
A third mishap involving a pet on a United Airlines flight has occurred in less than a week.
The 10-year-old German shepherd named Irgo arrived at a Wichita airport Thursday night after a flight on a private plane that United chartered from Japan.
Source Louis Nastro Reuters
United Airlines released a statement apologizing and taking full responsibility for the incident. No, not the one with the dog that died in the overhead bin. Catherine Cortez Masto, a Nevada Democrat, introduced the bill, known as the Welfare of Our Furry Friends (WOOFF) Act, on Thursday, which would prohibit putting animals in overhead compartments on aircraft on flights.
Maggie Schmerin, a United Airlines spokeswoman, told CNN the dog had been "loaded onto the flight in error" and was now "safely with its owner".
Cataline Robledo and her 11-year-old daughter and 2-month-old son brought their family dog onto a flight from Houston to NY in a pet carrier. Turns out United has a particularly frightful track record when it comes to safely transporting pets.
The dog was flown back to her on a plane after landing in Japan.
"Not exactly sure how, they aren't sure how either", Kara said.
Teddy Bridgewater is officially excited to be a Jet
Where before this trade it was a safe bet we'd see three quarterbacks go in the top six picks, now it might just be two. Heck, they might even draft Saquon Barkley knowing that they can get Josh Allen with the fourth overall selection.
Putin sparks outrage for suggesting Russian Jews may have manipulated USA election
Russian officials have denied involvement, but Russian state media have made veiled threats toward "traitors" since the attack. The victory will put the Russian leader on track to become the nation's longest-serving ruler since Josef Stalin.
Will break walls between Congress workers, leaders: Rahul Gandhi
Senior leaders of the Congress will guide the youths and take the party forward, he added. He said,"The formula of fielding party workers helped us put up a good show in Gujarat".