Minneapolis-Saint Paul International Airport 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 14 international markets. Compared to other metropolitan areas in the United States, only Denver serves slightly more non-stop markets per capita.