Allegiant Airlines Route Map - Allegiant Air is a US based ultra-low-cost carrier specializing in affordable, nonstop flights to popular leisure destinations across the country. Unlike major airlines that focus on hub-and-spoke systems, Allegiant operates point-to-point routes, primarily connecting smaller regional airports to sunny vacation spots. The airline serves over 120 destinations in the USA, with a strong presence, and the Southwest. Key focus cities include Orlando Sanford, Las Vegas, Phoenix-Mesa, and St. Petersburg, which serve as gateways to theme parks, beaches, and national parks. Allegiant frequently flies to destinations like Myrtle Beach, Savannah, and Gulfport-Biloxi on the East Coast, as well as seasonal routes to mountain and outdoor destinations such as Bozeman and Missoula. The airline avoids major hubs, instead opting for secondary airports like Chicago and Cincinnati to keep costs low. With its no-frills approach, Allegiant allows travelers to customize their trips by paying only for the services they need, making it a popular choice for budget-conscious vacationers. Routes and frequencies vary seasonally, with expanded service during peak travel periods. Passengers should check Allegiant's website for the most up-to-date route map and schedules.