Southwest to 'L-Word' Star: Passengers Complained About 'Excessive' Lesbian PDA

Southwest Airlines claims it only kicked a lesbian "L-Word" actress off a flight today after multiple passengers complained about her "excessive" affectionate behavior with another woman.

As we previously reported, Leisha Hailey went on a Twitter rampage hours ago -- claiming a flight attendant booted her and her GF for kissing on the plane ... because SW is a "family" airline.

Now, SWA has released a statement ... explaining, "Initial reports indicate that we received several passenger complaints characterizing the behavior as excessive."

The statement continues, "Our crew, responsible for the comfort of all Customers on board, approached the passengers based solely on behavior and not gender. The conversation escalated to a level that was better resolved on the ground, as opposed to in flight."