People in line at a United Airlines counter at LaGuardia Airport in New York. (Seth Wenig/AP)

United Airlines had an in-flight incident involving a dog.

No, not that one.

Or this one.

Another one.

A United flight from Newark to St. Louis was diverted Thursday after the airline learned it had an unauthorized passenger onboard: a dog. The pet was bound for Akron, Ohio, but was mistakenly loaded onto the St. Louis flight, company spokeswoman Natalie Noonan told The Washington Post on Saturday.

And so the plane followed the dog’s itinerary. Flight 3996 banked toward northeast Ohio after the airline “chose the fastest option to reunite the dog with his family,” Noonan said.

Passengers were provided compensation for the delay, Noonan said, but she declined to describe the compensation or confirm how many passengers were onboard. CNN reported 33.

Ian Petchenik, a spokesman for the flight-data company Flightradar24, told The Post that the flight averages about two hours. This was a four-hour journey, with roughly an hour and a half spent on the ground in Akron after diverting near Columbus, he said.

The incident was United’s third dog-related incident this week; fortunately this time, it led to a happier conclusion than the first. On Monday, a French bulldog puppy named Kokito suffocated to death in an overhead bin, after a flight attendant insisted the owner stow the dog there for a three-hour flight from Houston to New York.

“This little guy fought hard for his life, filling our flight with his cries until he finally ran out of breath,” passenger June Lara wrote on Facebook after the incident. “United Airlines does not care about the safety of their furry travelers. This poor family paid $125 for their pet to be murdered in front of them.”

United said it would take full responsibility for the “tragic accident that should never have occurred” and that pets should never be placed in the overhead bins. The Transportation Department is investigating the incident.

Then on Tuesday, another case of mistaken canine identity occurred on a United flight, sending a dog owner into a frenzy when she discovered a Great Dane in the place of her German shepherd, Irgo, in a facility at the airport in Kansas City, Mo.

Kara Swindle paid to ship Irgo as cargo on a flight from Oregon to Kansas, but instead the German shepherd was put on a flight to Japan. The mix-up occurred during connecting flights in Denver. The airlines vowed to return both dogs to their respective owners, and on Thursday, Irgo’s journey of thousands of miles ended in a happy, tail-wagging reunion.

Noonan declined to say if the company is creating or modifying regulations after the row of dog-related incidents.

The company appears especially challenged by pet incidents. Last year, the airline, one of the largest in the world, carried about a quarter of the total number of animals transported by air in the United States, but it was responsible for 18 of 25 flight-related pet deaths last year, according to Transportation Department data.

Read more:

United changed its policy for emotional-support animals. That peacock still can’t board.

Air travel was miserable in 2017, but at least nobody died in a commercial jet crash

An alert airline passenger exposed a suspected child-sex predator after glancing at his text messages