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Allegiant Air is an American low-cost airline that operates scheduled and charter flights. It was founded in 1997 and is headquartered in Las Vegas, Nevada. The airline operates flights to over 120 destinations across the United States, including popular vacation destinations such as Las Vegas, Orlando, and Myrtle Beach. Allegiant Air operates a fleet of Airbus A319, A320, and A321 aircraft, and offers a range of services including seat selection, priority boarding, and in-flight entertainment. The airline has been recognized for its low fares and customer service, and has won several awards for its performance and reliability.

Austrian Airlines is the flag carrier airline of Austria, headquartered in Vienna. It operates scheduled services to over 130 destinations worldwide, including Europe, North America, Asia, and Africa. The airline is a member of the Star Alliance and has a fleet of over 80 aircraft, including Airbus A320, A321, A319, Boeing 767, and 777. Austrian Airlines offers a range of travel classes, including Economy, Premium Economy, and Business Class, with a focus on providing a high level of service and comfort to its passengers. The airline has won numerous awards for its customer service, including Best Airline Staff in Europe and Best Business Class Catering.

British Airways is the flag carrier airline of the United Kingdom, headquartered in London. It is one of the largest airlines in Europe and operates flights to over 180 destinations worldwide. The airline was founded in 1974 and has since grown to become a major player in the aviation industry. British Airways is known for its high-quality service, comfortable seating, and extensive route network. The airline operates a fleet of over 250 aircraft, including the Airbus A380 and Boeing 787 Dreamliner. British Airways is a member of the Oneworld airline alliance and has codeshare agreements with several other airlines.

Norse Atlantic Airways is a new low-cost airline that plans to operate long-haul flights between Europe and the United States. The airline is based in Norway and was founded by Bjørn Kjos, the former CEO of Norwegian Air Shuttle. Norse Atlantic Airways plans to operate a fleet of Boeing 787 Dreamliner aircraft and offer low fares to passengers. The airline has not yet started operations, but it has already received approval from the US Department of Transportation to operate flights between Europe and the US. The airline aims to fill the gap left by Norwegian Air Shuttle, which ceased long-haul operations in January 2021.

Pegasus Airlines is a low-cost airline based in Turkey. It was founded in 1990 and began operations in 2005. The airline operates flights to over 100 destinations in 40 countries, primarily in Europe, the Middle East, and Asia. Pegasus Airlines has a fleet of over 80 aircraft, consisting of Airbus A320s and Boeing 737s. The airline offers a range of services, including online check-in, in-flight meals, and a loyalty program. Pegasus Airlines is known for its affordable fares and has won several awards for its customer service and operational efficiency.

Spirit Airlines is an American ultra-low-cost carrier that operates flights throughout the United States, the Caribbean, Mexico, and Central and South America. The airline was founded in 1983 and is headquartered in Miramar, Florida. Spirit Airlines is known for its low fares and no-frills approach to air travel, with passengers paying extra for amenities such as checked baggage, seat selection, and in-flight refreshments. The airline operates a fleet of Airbus aircraft and has a frequent flyer program called Free Spirit. Despite its low-cost model, Spirit Airlines has faced criticism for its customer service and fees.

Wizz Air is a low-cost airline based in Hungary that operates flights to destinations across Europe, the Middle East, and North Africa. Founded in 2003, the airline has grown rapidly and now operates a fleet of over 100 aircraft, serving more than 150 destinations in 44 countries. Wizz Air is known for its no-frills approach to air travel, offering low fares and charging extra for additional services such as checked baggage and in-flight meals. The airline has a strong focus on efficiency and cost control, allowing it to offer some of the lowest fares in the industry.