Sabena airliners which were augmented and later replaced by Douglas DC-6Bs. The DC-4s also restarted the airline's traditional route to the Belgian Congo. Sabena was the first airline to introduce transatlantic schedules from the north of England, when one of its DC-6Bs inaugurated the Brussels-Manchester-New York route on 28 October 1953. The Convair 240 was introduced in 1949 to partially replace the DC-3s that until then had flown most European services. As of 1956, improved Convair 440 "Metropolitan" twins began replacing the Convair 240 twins and were used successfully well into the 1960s between European regional destinations. In 1957, the long-range
National Airlines (1999–2002) National Airlines (1999–2002) National Airlines was a Las Vegas based low fare airline that operated from 1999 to 2002. It was the third United States-based airline to use the name. The airline was created to bring tourists to Las Vegas. National offered service to a limited number of cities with high traffic to Las Vegas. The airline operated a fleet of 19 Boeing 757-200s in a two-class configuration. Hoping to attract more visitors from the East Coast, Harrah's Entertainment and the former Rio Hotel & Casino, Inc., each contributed $15 million toward the start-up costs of National Airlines in July