Mobil Sierra Airport

The closure was due to economic and operational consolidation. The airport was a private aerodrome built and operated by Mobil Oil Canada (later ExxonMobil) exclusively to serve the Sierra Gas Plant and its associated natural gas fields in the Horn River Basin. In 2014, ExxonMobil and its partner Imperial Oil sold these assets. The new owners likely determined that maintaining a private airport was not cost-effective and consolidated their logistics, such as crew changes and cargo, through the larger, publicly-owned Fort Nelson Airport (CYYE), located approximately 90 km to the southwest.

The site is an abandoned airfield. The physical infrastructure, including the 5,000-foot paved runway, a taxiway, and an apron, remains intact but is in a state of disuse. The runway is clearly marked with large white 'X's on both ends, indicating it is permanently closed to all air traffic. The small terminal or hangar building on the north side of the apron also appears to be standing but is unused. The site remains part of the industrial property of the Sierra Gas Plant but serves no aviation function.

Mobil Sierra Airport was a critical logistical hub for one of British Columbia's significant natural gas operations in a remote region. Its primary purpose was to support the construction and long-term operation of the Sierra Gas Plant. The airport facilitated the fly-in/fly-out (FIFO) of hundreds of workers, transported executives, and enabled the rapid delivery of essential parts and emergency equipment. Its 5,000-foot paved runway was capable of handling robust turboprop aircraft common in northern operations, such as the de Havilland Canada Dash 8, Beechcraft King Air, and similar charter aircraft, linking the remote site directly to service centers like Fort Nelson, Fort St. John, and Calgary.

There are no known plans or public prospects for reopening the Mobil Sierra Airport. As a private industrial facility, its operation was entirely dependent on the specific needs of its owner. A reopening would require a significant investment to inspect, repair, and recertify the infrastructure, as well as a renewed business case demonstrating that a private airport is more efficient than using existing regional facilities. This is considered highly unlikely.