Duluth International Airport (IATA: DLH, ICAO: KDLH, FAA LID: DLH) is a city-owned public-use joint civil-military airport located five nautical miles (9 km) northwest of the central business district of Duluth, a city in Saint Louis County, Minnesota, United States.

The City of Duluth purchased the original property for the airport in 1929 from Saint Louis County.

In 1940, Northwest Airlines began the first regularly scheduled air service to Duluth.

Runway 13–31 was shortened to 2,578 feet (786 m) to accommodate construction of an addition to the International Arrivals building.

[8] On May 23, 2019, American Airlines began twice-daily service to Chicago O'Hare International Airport.

[11][12] Duluth International Airport covers an area of 3,020 acres (1,220 ha) at an elevation of 1,428 feet (435 m) above mean sea level.

[2] For the year ending December 31, 2022, the airport had 61,302 aircraft operations, an average of 168 per day: 78% general aviation, 7% military, 11% air taxi and 3% scheduled commercial.

At that time, there were 89 aircraft based at this airport: 49 single-engine, 10 multi-engine, 4 jet, 4 helicopter and 22 military.

[16] Sun Country operates a Landline bus service to Minneapolis–Saint Paul International Airport's Terminal 2 from DLH.