Bayannur Tianjitai Airport — Bayannur, China

Bayannur Tianjitai Airport, coded RLK, serves Bayannur, a city in China's Inner Mongolia Autonomous Region known for its agricultural output, particularly sunflower and wolfberry production, and its proximity to the Yellow River irrigation areas. The airport supports domestic flights linking Bayannur to major Chinese cities such as Beijing and Hohhot, facilitating trade and travel for this agriculturally significant but relatively remote region. As with many airports in Inner Mongolia built in recent decades, RLK reflects China's broader push to improve air connectivity to smaller inland cities. Passenger volumes remain modest, and the airport primarily functions as a regional feeder rather than a major transit point.