Frontier Airlines is the only major U.S. airline that offers low fares. We have the best deals on flights, vacation packages. Book your next flight with us and experience a whole new way to fly! Frontier Airlines is a U.S. based, ultra-low-cost airline. We offer the cheapest flights and travel packages to destinations in US. Frontier Airlines is a budget-friendly... Read More about Frontier Airlines

Southwest Airlines is one of the most profitable airlines in the world, with an operating margin of 31%. They are also ranked as the best airline in North America and the second best airline in the world by Skytrax.