Flight Udon Thani - Chengdu prices from $297.21

Chengdu Airlines is a Chinese airline based in Chengdu, Sichuan Province. It was founded in 2004 and operates domestic and international flights. The airline has a fleet of over 50 aircraft, including Airbus A320s and COMAC ARJ21s. Chengdu Airlines has codeshare agreements with several airlines, including Air China, Shenzhen Airlines, and Sichuan Airlines. The airline's main hub is Chengdu Shuangliu International Airport, and it also operates flights from other airports in China, such as Chongqing Jiangbei International Airport and Kunming Changshui International Airport. Chengdu Airlines is known for its affordable fares and good service.

Kunming Airlines is a Chinese airline based in Kunming, Yunnan province. It was established in 2005 and began operations in 2009. The airline operates domestic and international flights to destinations in China, Southeast Asia, and South Asia. Kunming Airlines has a fleet of over 30 aircraft, including Airbus A320s and Boeing 737s. The airline is a subsidiary of the HNA Group, which also owns Hainan Airlines, Tianjin Airlines, and several other airlines. Kunming Airlines has won several awards for its service, including the "Best Regional Airline in China" award at the 2018 World Airline Awards.

Loong Air is a Chinese airline based in Hangzhou, Zhejiang Province. It was founded in 2013 and began operations in 2013. The airline operates a fleet of Airbus A320 and A320neo aircraft, as well as Boeing 737-300 and 737-800 aircraft. Loong Air operates domestic flights within China, as well as international flights to destinations in Southeast Asia, Japan, and South Korea. The airline has a focus on providing affordable air travel to passengers, and has been expanding its route network in recent years. Loong Air is a subsidiary of the Hangzhou Tourism Group, a state-owned enterprise.

Lucky Air is a Chinese low-cost airline based in Kunming, Yunnan province. It was founded in 2004 and is a subsidiary of the Hainan Airlines Group. The airline operates domestic and international flights to destinations in Asia, including Thailand, Vietnam, and Japan. Lucky Air has a fleet of over 50 aircraft, including Airbus A320s and Boeing 737s. The airline has won several awards for its service, including the "Best Low-Cost Airline" award at the 2018 World Airline Awards. Lucky Air aims to provide affordable air travel to customers while maintaining high safety standards and quality service.

Ruili Airlines is a Chinese low-cost airline based in Kunming, Yunnan. It was founded in 2014 and began operations in 2015. The airline operates a fleet of Boeing 737-700 and 737-800 aircraft, serving domestic and international destinations in Southeast Asia. Ruili Airlines is a subsidiary of the Yunnan Jingcheng Group and is part of the HNA Group. The airline aims to provide affordable air travel to passengers while maintaining high safety standards. It has received several awards for its service, including the "Best Low-Cost Airline" award at the 2018 World Tourism Awards.

Spring Airlines is a low-cost airline based in Shanghai, China. It was founded in 2004 and operates both domestic and international flights to destinations in Asia. The airline's fleet consists of Airbus A320 aircraft, and it has a reputation for offering affordable fares and no-frills service. Spring Airlines has a strong focus on technology and innovation, with features such as online check-in and mobile boarding passes. The airline has won several awards for its service, including the "Best Low-Cost Carrier" award at the 2019 World Airline Awards.