Talk about a Ruff flight.

A Delta passenger barked angrily after being forced to give up his luxury first class seat for a fellow passenger – and was downright furious when he found out the lucky VIP was a dog.

“This morning I was promoted to first place, just 15 minutes later I was demoted (to the worst place than before). I asked the receptionist what was going on and she said, “Something has changed,” the Cross customer complained on Delta Air Lines Reddit today.

“Okay, fine, I’m upset, but whatever, I then get in just to see this dog in my first class seat… And now I’m angry,” Redditor @ben_bob explained in a post that The ignorant animal that took the vacant place was his.

After contacting Delta Support, the frustrated passenger, who had been given a bulkhead seat with more legroom, was upset to be told that a human passenger might need to be relocated to accommodate service animals – and that in such situations, ” “can’t do anything.”

“There is no way that dog spent as much on that airline as I did,” the angry elite insisted, calling the mix-up an “absolute joke.”

“What’s the real point of remaining loyal to this airline?” they continued. “I sat back as others complained that this airline has been treating customers poorly and declining in service levels recently, but I’m also starting to question my loyalty.”

Many Delta travelers quickly sided with the jilted jet setter.

“Notice how you never see so many service animals anywhere else in your life? Go to the airport and suddenly they show up,” one mused.

“Exclusively in the USA. This doesn’t happen anywhere else. “It’s American protagonist syndrome,” chimed in another.

“The dog is probably a Diamond Medallion 2 million miler,” someone joked, referring to top-level Delta status.

“2 million miles good guy,” said someone else.

“You forgot a 2 million mile fake ‘service dog,'” interjected one frustrated vacationer.

“I saw so many service dog vests flying yesterday. Like everyone else, everyone had a service dog. It’s so out of control,” they moaned.

While the situation may have been upsetting, a Delta employee joined the conversation and reminded everyone that passengers with special needs and service animals are legally given priority in the divider rows.

“When I was in reservations, every time they wanted the blocked seats, I had to point out to people that Delta is legally obligated to move them if a passenger with disabilities requests it,” they said.

But travel expert Gary Leff sided with the human traveler in the doggo debate.

“I really don’t understand Delta’s logic in pushing a passenger out of first class to accommodate a dog in the bulkhead,” Leff wrote on View From The Wing.

“Of course, under the Air Carrier Access Act, airlines are generally required to provide reasonable accommodations, and one way to do that may be through bulkhead seating. However, a last-minute seat change would certainly not be necessary,” he explained.

Leff noted that “Delta actually appears to have gone to the dogs,” noting other cases in which a first-class passenger was kicked out to make room for an emotional support dog and four pieces of carry-on luggage — as well as dogs that stayed upright sat and ate from tables in the so-called exclusive Delta One lounges.

“It’s a dog-eat-dog world,” mused one Reddit user.

“And some of us wear Milk Bone underwear,” said another, recalling a famous line from the TV show “Cheers.”