Delta Airlines is a significant American airline that operates a wide range of domestic and international flights. If you want to cancel your Delta flight, you should first learn about the airline's cancellation policy. Cancellation Policy: 24 Hours ( Depends origin country and airlines) Delta has implemented a 24-hour cancellation policy in response to passenger requirements and circumstances. When it comes to booking, Delta offers passengers more options and benefits. If you cancel your ticket after the 24-hour risk-free cancellation period, you will be charged a price of $100 to $500 by Delta. If you cancel your Delta Airlines flight within 24 hours before its scheduled departure, you will receive a full refund. If you miss your flight, an Delta Airlines flight cancellation fee of $100 to $400 will be imposed. After cancelling your flight ticket, you can also seek a cancellation.