Frontier Airlines is waiving all deviate and cancellation fees for all pass until Jan. 7, 2021 and must be made before the time of check-in. Fare differences apply for flight substitute, and you'll receive a labor interest if you decide to set aside your median. If you strait to substitute your departure due to an unforeseen harrowing adventure like a necrosis in the family, call the air carrier. If you declare to a purchaser service factor, you may be competent to shun penalties or at very least, lessen the fees.