On October 19, a new rule by the Department of Transportation (DOT) narrowed the definition of what kind of flight disruptions are categorized as "air carrier delay." What sounds like a minor technicality will have a major impact on what you're entitled to as a passenger when a trip goes awry .

Your ability to get a refund for a delayed or canceled flight hinges on whether the flight disruption is considered to be within the airline's control.

At a time when airfare prices are soaring and your travel budget is already stretched, it's worth understanding how this seemingly technical change in definitions will impact your next trip. Here's how your rights have changed and what you can do to protect your investment under the new regulations.

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