Yes, you can cancel a Frontier flight without penalty within 24 hours of booking, provided the flight is at least 7 days away. After that period, different cancellation fees may apply based on the type of ticket purchased. If you’re not sure about your travel plans, it’s a good idea to review Frontier’s cancellation policy in detail before booking. For help with cancellations or changes, you can access Frontier’s online management tools or contact their customer service directly.