The Department of Transportation is the primary avenue passengers have to see redress when being treated unfairly or otherwise harmed by an airline. Since airlines can’t be as heavily regulated as other industries elsewhere, and lawsuits against them are harder too, DOT was granted broad latitude to combat “unfair and deceptive” practices by airlines.
A new DOT rule defines unfair and deceptive more narrowly than in the past, and these new definitions will have to be used going forward when the considering consumer protections.