Allegiant Air (NASDAQ: ALGT), is an American low-cost airline, owne by Allegiant Travel Co. headquartered in Enterprise, Nevada, United States. The airline operates scheduled and charter flights from focus cities at Las Vegas' McCarran International Airport, Orlando Sanford International Airport, St. Petersburg-Clearwater International Airport, Phoenix-Mesa Gateway Airport, Fort Lauderdale-Hollywood International Airport, and Bellingham International Airport. The airline also offers vacation packages through its Allegiant Vacations affiliate.