Allegiant Air is a unique low-cost carrier specializing in affordable, non-stop flights to popular leisure destinations, often serving smaller, underserved airports. For immediate assistance and self-service options, their official website and mobile app are the primary channels, allowing passengers to manage bookings, check flight status, and find answers to common questions.

When direct contact is needed, the most reliable method is calling Allegiant's customer service number, readily available on their website. While a general customer service email isn't widely advertised, their site often features online forms for specific inquiries. To ensure an efficient experience, always have your booking confirmation, relevant personal information, and a clear summary of your issue prepared beforehand.

Leveraging the Allegiant mobile app for flight updates and trip management can often prevent the need for a phone call. Remember that wait times for phone support can vary, especially during busy periods, so patience and a polite demeanor are key to a smooth resolution.