Visit the Frontier Airlines website at Frontierairlines.com to check in to your Frontier flight. You can only check in to your flight if you are within the 24 hour window before departure.
Enter your first and last name and the reservation-confirmation number you received when you booked your flight.
Enter the number of bags you are checking and pre-pay for them to eliminate wait time at the baggage kiosk in the airport.
View your check-in confirmation and print your boarding pass. From here you can view the status of your flight to confirm departure times. If your flight is delayed or canceled for any reason you will receive notification.