To check your Frontier flight confirmation, start by visiting the Frontier Airlines official website or mobile app. Look for the "Manage Travel" or "My Trips" section and enter your last name along with the confirmation code provided during booking. Once logged in, you can review all the details related to your flight, such as departure and arrival times, seat assignments, and any additional services you may have selected. Verify that all information is accurate and up-to-date before your travel date. Frontier Airlines' digital platforms offer a convenient and efficient way to access and manage your flight confirmation details.