Online check-in Allegiant Air - https://www.check-in.site

Yes, Allegiant Air does offer online check-in for their flights. Online check-in allows passengers to check in for their flights and obtain their boarding passes in advance, typically from 24 hours up to 45 minutes before the scheduled departure time.

To complete the online check-in process for Allegiant Air, you can visit their official website or use their mobile app. Look for the "Check-In" or "Manage Travel" section, where you should find the option to check in for your flight. You will typically need your reservation details, such as the booking confirmation number and the last name of the passenger, to access your reservation and complete the check-in process.

During online check-in, you will have the opportunity to select or confirm your seat, add any necessary travel information, and receive your boarding pass electronically. Once you have completed online check-in, you can either print your boarding pass or save it on your mobile device to present at the airport.

It's important to note that specific timelines and requirements for online check-in may vary depending on the departure airport and the type of ticket you have purchased. Allegiant Air usually allows online check-in to be completed between 24 hours and 45 minutes before the scheduled departure time.

If you have any further questions or need additional assistance with Allegiant Air's online check-in process, I recommend visiting their official website or contacting their customer service directly.