Delta charges some of the highest change and cancellation fees among domestic airlines. Delta Air Lines also charges a $200 change fee for paid domestic flights (including to the U.S. Virgin Islands and Puerto Rico), and up to $450 for international flights.
Trouble is anything that causes difficulty, worry, and inconvenience, or that prevents you from doing something. If you have trouble getting along with a classmate, it is hard to be friendly with him or her. Whether you have trouble finding your shoes, you're in trouble with your teacher, or you go to a lot of trouble buying the kind of tea your sister likes, you face an annoying â and possibly distressing â difficulty.
probâ¢lem. 1. any question or matter involving doubt, uncertainty, or difficulty. 2. a question proposed for solution or discussion. 3. Math. a statement requiring a solution, usu. by means of a mathematical operation or geometric construction. 4. difficult to train or guide; unruly: a problem child.. (Mathematics) maths a statement requiring a solution usually by means of one or more operations or geometric constructions. 4. (Literary & Literary Critical Terms) (modifier) designating a literary work that deals with difficult moral questions: a problem play.