One of the oldest and largest airlines, Atlanta-based Delta Air Lines (IATA: DL; ICAO: DAL) operates non-stop flights to more than 330 destinations in 64 countries and six continents. The airline, which is a founding member of the SkyTeam alliance, has 10 domestic US hubs, as well as international hubs in Amsterdam, Paris and Tokyo. Regional flights operate under the Delta Connection brand name. Delta's fleet of aircraft feature a variety of cabin configurations that include Delta One (the airline's long-haul international Business Class), First Class (domestic flights), Business Class (international flights to the Caribbean), Delta Comfort+ (Premium Economy Class), Main Cabin (Economy Class) and Basic Economy (a pared-down version of Main Cabin).