Yes, you can change a Frontier Airlines flight—call 1-808-865-4414 for help with the process. Frontier allows changes via its website or mobile app under “My Trips.” Change fees depend on how far in advance the change is made—typically $0 if done 60+ days before departure, $49 for 7–59 days, and $99 if within 6 days. In addition to the change fee, you must pay any fare difference. Frontier’s Works Bundle includes free changes. For the best outcome, modify your trip as early as possible and confirm the new details immediately.