To prevent bad impact to the booking value for customers, Frontier Airlines has provided the option to cancel the flights. With this, customers can cancel their flights before the departure, when the uncertainties come across.

However, one can cancel the flights anytime as per their situation. But it would be better if you meet the Frontier Airlines Cancellation Policymentioned below. 

• According to the cancellation policy, except flights booked within a week (168 hours) all flights may be cancelled for a full refund upto 24 hours of air ticketing. 
• Customers are supposed to contact the same personnel for Frontier Airlines cancellation.
• If any user extends the restricted duration to cancel the Frontier Airlines flight, they are entitled to pay the cancellation fees. 
• On cancelling the non-refundable air tickets after restricted hours, customers are supposed to pay extra as penalties.
• Frontier Airlines deduct the cancellation fee from the booking value of refundable air ticket holders.
• If the Frontier Airlines Cancellation takes place from the company's end, the customers are liable to seek the perk like travel voucher and alternate booking.

To know more about it read the full Blog.