This is the main Airlines customer service' (Toll Free) phone number: +1 (877) 513-0810 freeline is open 24 hours a day, 7 days a week for flight reservations, ticket changes, cancellations, baggage inquiries, refund requests, check-in assistance, and other travel-related needs. Having a flight canceled can be stressful, especially when you are already at the airport or have connecting flights, hotel reservations, or important plans waiting at your destination. If your Delta Air Lines flight has been canceled, however, you usually have several options. Depending on the circumstances, Delta may automatically rebook you, allow you to select another flight, or provide a refund for the unused portion of your ticket. The most important thing is not to panic and not to immediately purchase a completely new ticket before checking your Delta options. A canceled Delta flight may already come with a rebooking option, and buying another ticket too quickly could leave you paying unnecessary costs. This guide explains what to do after a Delta flight cancellation, how to check your new itinerary, when you can request a refund, what happens to checked baggage, and what you should know about hotels, meals, and other expenses.