OMA is the airport code for which U.S. city?

OMA is the airport code for Omaha, Nebraska, a city in the Midwestern United States. This code comes from the city's name, making it intuitive for travelers and airlines. Omaha is served by Eppley Airfield, which is designated with the airport code OMA. Each airport code in the United States typically consists of three letters, with many codes being derived from the city or location's name to facilitate easy identification and communication in the aviation industry.

The other options refer to different cities with distinct airport codes: Oklahoma City has the code OKC, Ontario’s airport in California is recognized by its code ONT, and Orlando, Florida, is known by the airport code MCO.