A boozed-up woman stripped off her pants on a flight to Texas and took a swing at a flight attendant — forcing the plane to be diverted to Alabama, reports and a witness said.

Sierra Nicole McClinton, 25, was drunk and threw up on herself aboard the Houston-bound CommutAir flight from Jacksonville, Fla., on Thursday — prompting her to take off her pants, according to Fox News and an Instagram posting by a man who said he was aboard the flight.

McClinton, of Universal City, Texas, then got into an altercation with another female passenger, reports said.

A flight attendant intervened to try to calm McClinton down, but the woman took a swing at her, according to the witness and reports.

McClinton’s alleged antics forced the plane to land early in Mobile, Ala. — where she got off in nothing but a T-shirt and underwear.

She appeared intoxicated and allegedly yelled obscenities as she refused to listen to officers’ commands, Fox reported.

McClinton faces charges of disorderly conduct and public intoxication.

In a statement to Fox News, a rep for CommutAir said Flight 4332, “operating as United Express from Jacksonville to Houston, diverted to Mobile when a passenger became disruptive. The aircraft landed safely in Mobile where law enforcement officials met the aircraft at the gate. The flight continued on to Houston shortly after.”