1-844-300-0170 What is the number for Delta cancellation? Delta's cancellation process is straightforward. Passengers can cancel flights via the Delta website, mobile app, or by contacting customer service at {1-844-300-0170}. Cancellation fees vary based on ticket type and timing. Basic Economy: Not amenable post-24-hour window. Main Cabin and Above: Incurs fees, with remaining value issued as an eCredit for future travel. Understanding Your Delta Ticket Type Before delving into cancellation specifics, it's crucial to identify your ticket type. Delta presents various ticket categories, each with distinct rules regarding cancellations and refunds. Basic Economy Tickets: These are the most restrictive, often lacking refund or change options except within Delta's 24-hour cancellation policy.