Slide through your Thanksgiving airplane journey with some advice from wacky ex-JetBlue flight attendant Steven Slater.

A key rule: Be nice to the cabin crew.

“It’s amazing how many people will stare suspiciously at us before storming down the aisle in response to our smile and ‘Welcome aboard,’¤” Slater says on Outtraveler.com, a gay travel site.

Slater says a passenger who wasn’t very nice in August caused him to deploy an emergency chute, which he used to slide off his JetBlue flight with a couple of beers in his hands.

He also slid himself out of a job — and ended up pleading guilty of attempted criminal mischief.

Some of Slater’s other flying tips:

Dress well. “An elegant wardrobe paired with good manners is the hallmark of a classy traveler. We’re more likely to dote on refined customers than we are the T-shirt and flip-flop crowd.”

Be tidy. “It’s hard to scrape gum off the upholstery and retrieve dirty diapers from the seatback pockets and still look fresh for the next round of passengers.”

Don’t crowd the boarding gate. “Stylish travelers wait until their row is called instead of rushing the gate like the stage at a Motley Crue concert.”