Attempts are made by all airlines to provide the best service possible to their passengers. Flight delays can occur for a variety of reasons, though. All impacted passengers are fortunately protected by EC261. If a flight is canceled, delayed by more than five hours, or both, Delta will rebook you on an alternative flight with a range of available time slots. If none of the options is perfect for your needs, you can ask for a cash refund. You might be eligible for Delta Delayed Flight Compensation if your Delta flight is canceled.