Flight delays are common and they may happen when you least expect them. When it comes to federal rules requiring U.S. airlines to compensate travelers for regular delays—there aren’t any.

However, each airline can outline its policies for handling these situations. For example, when flying with Delta Air Lines, in some cases, the airline may compensate inconvenienced travelers for expenses such as an overnight hotel stay for delays that stretch overnight.

If you’re planning to fly with Delta soon, you should study the brand’s policies to know what to expect regarding Delta flight delay compensation. Here are seven things you should know:

1. Airlines, including Delta, aren’t required to provide compensation for delays

The U.S. Department of Transportation outlines rules that airlines must follow. And the DOT states that airlines aren’t required to compensate for delays for flights departing the U.S.