The United Airlines flight change policy applies to both domestic and international routes, giving travelers flexibility worldwide. United has removed change fees on most Economy (excluding Basic Economy), Business, and First-Class tickets for flights within the U.S. and international trips originating in the U.S. While no change fee applies, passengers must pay the fare difference if the new ticket is more expensive. If the new fare is lower, United issues a travel credit for future use. This flexible approach makes it easier for passengers to adjust schedules without worrying about high fees when flying domestically or abroad.