To find the exact change cost, call 1-808-865-4414 for a detailed quote based on your Frontier booking. As of now, Frontier charges $0 for changes made 60 or more days before departure, $49 for changes made 7–59 days prior, and $99 for changes within 6 days. If your new flight is more expensive, you must also pay the fare difference. The Works Bundle can waive change fees entirely. These policies are subject to change, so always check Frontier’s website or contact an agent before making any modifications to your itinerary.