The term 'Airport Bummer' is a phrase used to describe the feeling of disappointment and frustration when a flight is delayed. The crossword solution for this term is DELAY, which is a five letter word. A DELAY at an airport can be caused by a variety of factors, such as bad weather, mechanical issues, or air traffic control. Delays can cause a great deal of stress and inconvenience for travelers, making them feel like their plans have been ruined.