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.
Raonic to meet del Potro
It was extremely uncharacteristic of the maestro, who hadn't dropped a set all through his campaign at this tournament this year. Osaka needed just 70 minutes to dispatch Kasatkina , who had an equally impressive showing in the desert.
39 arrested after killing of 2 anti-polio workers in Mohmand
In 2011, USA intelligence officials used a fake vaccination program was used as part of the search for Osama Bin Laden. Pakistan is one of the few countries in the world where polio is still endemic, along with Afghanistan and Nigeria.
Turkey-led forces enter Syria's Afrin city: monitor
The statement said this was the "first blatant violation of Kurdish people's culture and history since the takeover of Afrin ". Civilians there are reportedly being prevented from leaving the town by Kurdish forces. "We are proud of you", he said.