Raleigh-Durham International Airport (RDU) is located in Wake County, North Carolina, approximately five miles from the city of Morrisville. It offers around 350 daily flights to both domestic and international destinations.
RDU is currently served by eight airlines: AirTran Airways, Southwest, Air Canada, American Airlines, Delta, JetBlue Airways, United, and US Airways.
RDU has two terminals. AirTran and Southwest have flights departing from Terminal 1, with AirTran operating out of Gate A24 and Southwest operating out of Gates A25-28. The other six airlines operate out of Terminal 2. American, Delta and JetBlue depart from various numbered C gates, while Air Canada, United and US Airways operate from variously numbered D gates.
By far the busiest domestic route for RDU during the 2011-2012 year was Atlanta, with over 630,000 passengers. AirTran and Delta both service the Atlanta route. Other busy domestic routes for the airport include Charlotte, Philadelphia, New York (LaGuardia) and Chicago (ORD). US Airways handles all of the RDU flights to Charlotte. Both US Airways and Southwest make flights to Philadelphia. American and Delta join US Airways in offering flights to New York, while American and United handle all the traffic to Chicago.
US Airways uses regional affiliates such as Air Wisconsin, Chautauqua Airlines, Mesa, PSA, Republic and Trans Sates Airlines for their flights to Philadelphia, Washington-National, Charlotte and Pittsburgh. United and Delta also use affiliate airlines for some of their flights.
RDU is no longer a hub airport for American Airlines, though it was for a number of years. American continues a daily nonstop flight to London from RDU, mostly because of the needs of their corporate passengers. Raleigh-Durham is considered a large corporate corridor. For example, GlaxoSmithKline has a base in both Raleigh-Durham and in London.
Southwest began offering service out of RDU in the late 1990s and has now become the largest carrier for the airport, passing American. After a loss of some carriers and flights in the mid 2000s, RDU has once again begun to grow.