Minneapolis-Saint Paul International Airport (IATA: MSP, ICAO: KMSP, FAA LID: MSP) is the largest and busiest airport in the five-state upper Midwestern region of Minnesota, Iowa, South Dakota, North Dakota, and Wisconsin.
In terms of passengers, Minneapolis-Saint Paul International Airport is the twelfth busiest airport in the United States (2006), and twenty-sixth busiest airport in the world in 2007. It is also home to the Minneapolis-Saint Paul Joint Air Reserve Station. Airlines out of Minneapolis/St. Paul International airport serve 131 nonstop markets from MSP, including 116 domestic and fourteen international markets. Compared to other metropolitan areas in the United States, only Denver serves slightly more non-stop markets per capita.
The airport, including both passenger terminal buildings, is mostly located in the Census-designated place of Fort Snelling in an unincorporated part of Hennepin County. Small sections of the airport are within the city limits of Minneapolis and Richfield. The airport is across the Mississippi River from St. Paul. The terminal exits of the airport are minutes away from the Mall of America; careful flight pattern planning ensures that aircraft never fly over the mall at low altitude. It is the largest 'origin and destination' (O&D) airport for Northwest Airlines, Northwest Airlink partners Compass Airlines, Mesaba Airlines, and Pinnacle Airlines, in terms of passengers carried and revenues (all but Compass and Pinnacle having headquarters nearby), the airport is Northwest Airlines busiest hub overall. It also serves as the hub for Sun Country Airlines. Northwest Airlines accounts for more than 80% of the airport's passenger traffic. It is operated by the Metropolitan Airports Commission, which also handles operation of six smaller airports in the region.