If you are unable to book online, please ensure that you are using a compatible web browser and that you complete all required fields and selections on each page.
The Allegiant web site supports the latest version of the following desktop browsers:
- Internet Explorer
The supported mobile browsers are the latest versions of:
Please check the app store for the compatibility requirements when using the Allegiant App.
Customers using earlier versions or unsupported browsers may experience error messages.
If you continue to experience technical difficulties, please contact Customer Care for assistance.
Be sure to indicate which web browser you are using, and explain in detail the issues you encountered.