It was a vacation of a lifetime for Connie Guillory, a cruise to the Bahamas.
"Basically, they were like, you're too big, you can't go," Guillory recalled. She says she was told she would have to pay for a second seat.
"They treated me like I'm a 500-pound second class citizen," Guillory said.
Guillory was delayed at the airport for several hours until there was a flight with free extra seats. She even shot a video of herself using her cell phone to prove she could fit in the seat.
"I just started crying because I was telling my friend, 'I fit, I fit, I fit! How could they do this to me? I fit in this seat!'" Guillory told INSIDE EDITION.
Now, Southwest is apologizing to Guillory, saying in a statement, "Our policies are intended for the safety and comfort of our passengers. This case may not have been our best moment. We are very sorry."
It's not the first time Southwest has collided with overweight passengers.
In January, director Kevin Smith was asked to get off a Southwest flight because he says he was told by the airline that he didn't fit in one seat. In 2000, Cynthia Luther sued Southwest because she was told she was too fat to fly, and she lost.
Guillory says what happened to her still hurts.
"I'm tired of society counting me out," she said.