Eastern Sierra Regional Airport is two miles east of Bishop, in Inyo County, California, United States. It is owned by the City of Los Angeles, Department of Public Works and operated by Inyo County. Facilities The airport covers at an elevation of . It has three asphalt runways: 8/26 is ; 12/30 is ; 17/35 is . It has two helipads: H1 is and H2 is . In the year ending October 23, 2006 the airport had 26,000 aircraft operations, average 71 per day: 88% general aviation and 12% military. 64 aircraft were then based at the airport: 81% single-engine, 13% multi-engine, 2% jet and 5% glider. Airlines and destinations Effective December 19, 2021, SkyWest Airlines operating as United Express via a code sharing agreement with United Airlines began nonstop service to the airport, utilizing Bombardier CRJ700 regional jet aircraft. Winter 22/23 will include daily flights to San Francisco (SFO) and Denver (DEN). These new flights replaced United Express service to nearby Mammoth Yosemite Airport and also marked the return of scheduled passenger service to Eastern Sierra Regional Airport and Bishop. Historical military use The airfield opened in April 1940 on subleased from Inyo County. During World War II it was known as Bishop Army Airfield and was a sub-base to Muroc Army Airfield in 1942 and 1943 for Fourth Air Force. The site was used for aircraft flight and ordnance delivery training. In 1943 it was reassigned to Tonopah Army Airfield, Nevada. Aircraft maintenance and ordnance storage were also done. After the end of World War II, Bishop AAF was turned over to Air Technical Service Command as a storage airfield. On 2 May 1949, the Army cancelled its initial lease of with Inyo County for Bishop Airport under the War Assets Administration's Peacetime Reduction Mission, and the base was declared excess to requirements and returned to civil control. The U.S. Air Force subleased runway use rights and a heliport area of known as the Bishop Test Site from Inyo County from 15 November 1965 to 19 June 1971 and from 25 November 1980 to 30 September 1985. The Air Force used the heliport area and runway for performance testing of helicopters and other aircraft. The U.S. DoD facilities included runway expansion, fuel facilities, utilities, buildings, aircraft maintenance, hospital and barracks. Today, the airport is owned by the City of Los Angeles, California and is leased to Inyo County.