Southwest may no longer clean coach seats between flights — and the reaction is no surprise: ‘Sit in filth unless you pay extra?’

This scuttlebutt is bad news for butts. 

Flying with Southwest Airlines could mean flying with the spills, fluids, flakes and grime left by the guy who sat in the seat right before you, per alarming claims that the company is planning to only clean “premium seats” between flights. 

Chris Click, a safety chair for the Transport Workers Union Local 556, which represents Southwest Airlines flight attendants, received a memo regarding “the experiment they’re doing with cleaners coming on board and cleaning the airplane,” this week, according to Views From The Wing, an online traveling hub.

In a since-deleted video, Click reportedly likened Southwest’s alleged prioritization of first-class passengers — including trippers who are willing to pay for extra legroom — over economy flyers to that of the upper-class citizens on the ill-fated Titanic. 

He joked that exclusively cleaning the accommodations for premium ticket holders is like the wealthy Titanic cruisers, “having cigars and sipping brandy and telling their stories of their untold fortunes” while folks “below deck” suffered. 

However, a representative for Southwest contradicted the Click’s memo in a statement to The Post, claiming that their flight attendants “tidy every aircraft between every flight today.”

They also noted that their “extended leg room seats are toward the front of the plane, so they see more foot traffic than the seats in the back.”

“We will continue to make sure our aircraft are ready for every Customer, regardless of where their seats are on the plane,” they told The Post.

The news comes amid a slew of controversial plane seat shake-ups by the budget airline, such as their recent decision to do away with open-seating.

Rumors of its sanitation switch-up have frequent flyers in a tailspin. 

“Southwest Airlines [is] only gonna clean your seat if it smells like money,” wrote an outraged X user. “The rest of you peasants can sit in the germ-infested filth left behind by the rest of the poor people.”

“Southwest Airlines has turned in to public transit. Dirty and expensive,” another spat. 

“There isn’t a big enough ‘FU’ in my fonts,” tweeted an equally irked critic, in part. 

The virtual vilification of the airline comes just days after travelers deemed its new seating policy a “disaster,” equating it to extortion. As of January, the Texas-based imprint barred customers from choosing a seat upon boarding a plane, forcing some to pay higher fees for more legroom.

But when it comes to skimping on cleanliness, the airline may not have a leg to stand on — especially after a recent scientific swab test revealed the copious amounts of bacteria that coat plane seats. 

The alleged move to limit cleaning between trips is reportedly rooted in Southwest’s dedication to getting aircraft ready for takeoff as quickly as possible. 

“They spend less time on the ground and more time in the air, but the planes don’t get as clean,” said a travel insider in a statement. “Flight attendants aren’t expected to reach into seat back pockets, for instance.”

Cabin crew members, however, will reportedly continue tidying up entire cabins, collecting visible trash and straightening seatbelts.

But neither the flight attendants nor an official cleanup crew will be responsible for sanitizing second-class seats and tray tables, if the alleged changes to Southwest’s policies are true. 

Here are a veteran flight attendant’s top 5 tips for surviving the unsanitary trappings of airplanes.   

• Sanitize the entire seating area — tray tables, seat cushions, armrests, screens and seat buckle
• Avoid touching the seat pocket
• Use a blanket as a chair cover
• Keep your shoes on
• Pay attention to your surroundings before putting your carry-on items on the floor