Yes, you can almost always change your ticket date in 2026, but the cost depends on your fare class and when you make the request. Following the industry shifts of the early 2020s, many major U.S. carriers (like Delta, United, and American) have eliminated "change fees" for standard Economy and higher tickets on domestic and some international routes. However, you must still pay the fare difference—if the new flight costs $500 and your original was $300, you will owe $200. Crucially, "Basic Economy" tickets remain the exception; they are typically non-changeable and non-refundable unless you are within the 24-hour grace period after booking. In 2026, new DGCA-style regulations in several regions also provide a "48-hour look-in" window where you can amend dates for free if the flight is at least a week away. To change your date, the most efficient method is using the airline’s mobile app under "Manage Trip." If the airline cancels your flight or changes the time by more than two hours, you are entitled to change your date for free or receive a full refund, regardless of your original fare rules.