Dedicated as Portland Columbia Airport when opening in 1940, the airport
served 99,000 passengers in its first year. After building longer runways to
meet the requirements of larger aircraft and international air service, the
airport was renamed Portland International Airport in 1951. By that time,
annual passenger counts quadrupled to 400,000. Today PDX serves a
record 16 million passengers annually, and offers nonstop routes to 57
domestic and nine international locations.