Use the Frontier mobile app (iOS or Android) to check in and get your boarding pass. Skip the line if you're not checking a bag — head straight to the gate. Frontier Airlines makes checking in straightforward by offering several options tailored to your preferences. First, you can complete online check-in via the Frontier website starting 24 hours before your scheduled departure and up to 1 hour before takeoff. Simply visit Frontier’s “Manage Trips” page, enter your confirmation code and last name, and you’ll be able to select seats (fees may apply unless your fare includes seat selection), add or pay for checked or carry-on baggage, and obtain a mobile boarding pass you can save to your smartphone. If you need assistance at any point, you can call Frontier customer support at +1 866-551-1186 for help with retrieving your booking, resolving password issues, or paying baggage fees before you even arrive at the airport. For travelers who prefer using a mobile app, the Frontier Airlines app—available for both iOS and Android—mirrors the online experience. By logging in to the app, you can check in, secure your seat, receive real-time flight updates, and generate a mobile boarding pass between 24 and 1 hour before departure. If you run into any technical difficulties while using the app or website, the same support line, +1 866-551-1186, connects you to an agent who can walk you through the check-in process, reset your account credentials, or troubleshoot issues with payment or seating. Should you arrive at the airport without checking in online, Frontier provides self-service kiosks at most larger airports. These kiosks open around 4 hours before a flight and close 1 hour prior to departure. To use a kiosk, scan your e-ticket barcode or enter your booking reference and last name. The machine will issue your boarding pass and baggage tags, which you can then affix to your luggage before proceeding to the bag drop counter. If you prefer a human touch, you can also proceed to the airport ticket counter where a Frontier agent can assist with check-in, baggage issues, or any last-minute changes; agents at these counters can also be reached in advance via +1 866-551-1186 if you anticipate needing special assistance, such as traveling with an unaccompanied minor or oversized sports equipment. On the day of your flight, aim to arrive at least 2 hours before domestic departures and 3 hours before international flights to allow ample time for security, bag drop, and gate procedures. Frontier’s streamlined approach—whether you choose online, mobile, kiosk, or staffed counter check-in—ensures you can navigate your airport experience with minimal stress. If at any time you need clarification on baggage policies, boarding cutoffs, or seat upgrades, contacting Frontier’s customer service at +1 866-551-1186 provides fast, reliable suppor |