Northern Virginia from the older National Airport (a focus city for American Airlines) are restricted for distance, frequency, and flight paths due to the proximity to federal facilities, Dulles is the region's second busiest airport in both passenger loadings and aircraft movements, and the sixteenth-busiest airport in the United States by takeoffs and landings in 2007. Dulles is the region's primary international gateway, serves as a hub for United Airlines, and has recently improved its low-cost carrier offerings with the addition of multiple flights by Southwest and JetBlue. Commuters are served by the Washington Metro subway and the Virginia Railway Express, a
Cross City Airport of 49 per day. At that time there were 11 aircraft based at this airport: 82% single-engine, 9% jet, and 9% helicopter. Cross City Airport Cross City Airport is a county-owned, public-use airport located one nautical mile (2 km) east of the central business district of Cross City, a city in Dixie County, Florida, United States. It is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a "general aviation" facility. The airport was opened as a public airfield in April 1940. In August 1942, the facility was requisitioned by the United States Army