A simple way to change or cancel a flight without paying a fee is to do so within 24 hours of booking. After this window, the next option is to wait to see if the airline makes a change to the flight ? the departure time, the aircraft, etc. ? which will automatically grant you a refund if you change or cancel.

In 2026, your ability to cancel without penalty is governed by the "24-Hour Look-in Rule." For any flight booked directly with an airline at least 7 days before departure, you have a legal right to a full refund within 24 hours of purchase, regardless of the ticket type. Beyond that window, "Basic Economy" tickets are usually non-refundable, while "Main Cabin" or higher fares may allow you to cancel for a "Flight Credit" rather than cash. However, if the airline cancels or significantly changes your flight (usually defined in 2026 as a 3+ hour delay), you are legally entitled to a 100% cash refund to your original payment method. For 2026 travelers, the "pro-tip" is to check if you have "Fully Refundable" status on your ticket, which—while more expensive—is the only way to get your money back for a "change of plans" after that initial 24-hour window has closed.