Mount Hawley Auxiliary Airport (FAA LID: 3MY) is a public use airport located seven nautical miles (13 km) north of the central business district of Peoria, a city in Peoria County, Illinois, United States.

[1] According to the FAA's National Plan of Integrated Airport Systems for 2009–2013, it is categorized as a general aviation facility.

[2] Mount Hawley Auxiliary Airport covers an area of 84 acres (34 ha) at an elevation of 786 feet (240 m) above mean sea level.

Besides fuel, the FBO offers catering, a lounge, refreshments, supplies, a weather briefing station, and a courtesy car.

[5] For the 12-month period ending April 30, 2020, the airport had 21,000 aircraft operations, an average of 57 per day: 99% general aviation and 1% air taxi.