The subway line connecting downtown Beijing with its new international airport will start trial operations June 20, the Beijing Major Projects Construction Headquarters Office said Tuesday.

Work is underway in finishing the interior decor, installing equipment and laying tracks for the subway, as the Beijing Daxing International Airport is set to open Sept 30.

Stretching over 41 kilometers through the southern part of Beijing, the new line will run through Fengtai and Daxing districts. Stops are planned at three stations: New Airport North Terminal Station, Cigezhuang Station and Caoqiao Station, which will start operation at the same time as the new airport.

According to the latest plan, the new line will extend northward underground to Lize Financial Business Area, which is about 3.5 km from Caoqiao Station, so passengers can transfer to Line 14 and Line 16, which are under construction, and Line 11, which is planned.

A city terminal will be established in the Lize Financial Business Area, providing check-in and luggage check services. Passengers will enjoy more convenience with the ability to check their luggage and get their boarding passes before they arrive at the new airport.