Delta Terminal at Detroit Metro AirportNorthwest opened its $1.2 billion, 122-gate Detroit terminal in 2002, replacing an ancient facility. Passengers on other airlines use a second new terminal that opened in 2008. Following the 2008 merger with Northwest, Detroit became Delta's second largest hub. Today from Detroit, Delta offers 580 peak-day departures to 147 destinations, including 20 international destinations. Detroit is among the country's principal gateways to Asia, with non-stop flights to Hong Kong, Shanghai, Seoul, Tokyo-Narita and Nagoya. Additionally, Delta recently began service to Sao Paulo, the first non-stop flight between Detroit and South America, and plans to begin Tokyo-Haneda service in February.