"cross-town" shuttle service between the airport and Houston Intercontinental Airport (IAH), with de Havilland Canada DHC-6 Twin Otter twin turboprop aircraft operating up to twelve round-trip flights a day. The Commutair service was replaced by Metro Airlines during the 1980s. In the summer of 1983, Metro, operating as an independent air carrier, was flying up to nine round trips a day between Sugar Land and Houston Intercontinental with Twin Otter aircraft. By early 1985, Metro Airlines had entered into a codesharing agreement with Eastern Air Lines and was flying Twin Otter aircraft as Eastern Express between the airport and IAH with up to eleven round trip flights a day. In 1993, Austin-based Conquest Airlines announced it would begin intrastate flights from the airport to Austin (Mueller Airport), Dallas Love Field (DAL), and San Antonio. By 1994, Conquest had dropped flights to San Antonio but was still operating nonstops to Austin and Dallas. In 1995, the airline was operating three nonstop flights a day to Austin with Fairchild Swearingen Metroliner (Metro III model) propjets. By 1996, Conquest was no longer serving Sugar Land Regional. The airport does not have any scheduled passenger airline flights at the present time. Current name Sugar Land Regional Airport received its current name in October 2002. The airfield was formerly known as Sugar Land Municipal Airport and Hull Field. It is the fourth-largest airport in Greater Houston as of 2009, receiving annual usage from private planes of more than 100 Fortune 500 companies. TXP, Inc. released a report identifying the airport as "foremost general reliever airport in the southwest sector" and "a catalyst for corporate commerce in the Greater Houston market including the Westchase District, Uptown, and Greenway Plaza." The airport is the fourth-largest in the Houston area, serving as a reliever for William P. Hobby Airport. As of 2010, Sugar Land Regional is the third-busiest airport in Greater Houston by number of aircraft operations. Facilities and aircraft Sugar Land Regional Airport covers an area of and contains one concrete paved runway designated 17/35 which measures 8,000 x 100 ft (2,438 x 30 m). For the 12-month period ending July 28, 2005, the airport had 90,758 aircraft operations, an average of 248 per day: 95% general aviation, 5% air taxi and less than 1% military. In August 2017, there were 139 aircraft based at this airport: 84 single-engine, 18 multi-engine, 34 jet and 3 helicopter. The