Hermiston Municipal Airport is a city-owned, public-use airport located two nautical miles (3.7 km) southeast of the central business district of Hermiston, in Umatilla County, Oregon, United States.
Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned HRI by the FAA and HES by the IATA.
Hermiston Municipal Airport covers an area of at an elevation of 644 feet (196 m) above mean sea level. It has one runway designated 5/23 with an asphalt surface measuring 4,500 by 75 feet (1,372 x 23 m).
For the 12-month period ending September 1, 2017, the airport had 13,240 aircraft operations, an average of 36 per day. At that time there were 38 aircraft based at this airport: 31 single-engine piston, 1 multi-engine piston, 5 Turboprop, and 1 Turbojet.