A woman flying on standby on a Southwest Airlines flight was removed from the plane because one passenger needed two seats:

A petite Sacramento woman was bumped from a Southwest Airlines flight to make room for an extra-large 14-year-old child who required two seats.

The 5-foot-4, 110-pound woman, who was flying standby from Las Vegas to Sacramento, was buckled up and ready to go when the teen arrived late to the gate, reported the Sacramento Bee.[...]

Southwest generally requires large passengers to buy two tickets. But in this case, the child's parents had purchased only one.

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