Work has begun to expand Incheon International Airport with an investment of about four-point-two billion U.S. dollars.<br />To meet growing demand, the money will be invested gradually over the next five years to build a fourth runway and other facilities, as well as expand Terminal 2.<br />Once the expansion's complete, the airport's capacity is expected to rise to more than 106 million passengers a year with each terminal able to manage more than 50 million each.<br />The transport ministry expects that would make Incheon the world's third biggest airport by passenger capacity after Dubai and Istanbul.<br />
