Operated by A-Train AB, the trip takes 18 minutes and runs three to six times per hour using seven X3 electric multiple units.

[2] The railroad is owned by two Australian pension funds and partly (37.5%) by the Gingko Tree Investment Ltd,[3][4] a subsidiary of Chinese State Administration of Foreign Exchange.

[9] As of 2024[update], the standard price for a one-way ticket is SEK 340, although discounts are offered for children, students, seniors, on special travel days and for return trips under certain conditions.

In 2006, the trains were renovated and received new interiors in three different color schemes, green, orange and blue, designed by the former Swedish tennis player Björn Borg's eponymous fashion label.

The Swedish Rail Administration made a specific plan in the late 1980s which involved the construction of a branch from the existing East Coast Line.

This resulted in a project plan which was launched in 1990, which specifically suggested Rosersberg and Odensala as the intersections with the existing line.

[14] The Swedish Rail Administration had proposed that the line was to be built with the government agency as owner and with either SJ or private railway companies as train operators.

In 1994, Arlanda Link Consortium was chosen, consisting of the Nordic Construction Company, SIAB [sv], Vattenfall, GEC-Alsthom and Mowlem.

[8] The company was also allowed to operate a shuttle service from Stockholm C to Arlanda and charge a non-discriminating fee for all other trains using the line.

The public–private partnership part of the project involved two new tracks at Stockholm C and the Arlanda Line, costing SEK 4.1 billion.

A-Train was also granted an interest-free deferral on the payment of the fees at Stockholm C and Arlanda, costing the state SEK 90 million.

It also criticized the Government for giving additional financial support to A-Train in the form of guarantees without informing the Riksdag, and having an unclear management strategy.

[20][21] The Swedish State holds an option to purchase the traffic rights from A-Train in 2010[needs update], which would eliminate the fees and allow other operators to run directly from the airport to the city center.

Commentators and politicians have stated that the business model results in a low utilization of the line because of the high ticket prices, which has caused the airport to not reach its targeted emission goals.