Which airport code corresponds to Ontario, California?

The airport code that corresponds to Ontario, California, is ONT. This code is derived from the name of the city itself, making it a straightforward and logical abbreviation for the Ontario International Airport. Each airport is assigned a unique three-letter code by the International Air Transport Association (IATA) to simplify communication and identification in travel-related systems.

On the other hand, the other codes represent different cities and airports across the United States: OAK is for Oakland, California; OKC is for Oklahoma City, Oklahoma, and OMA is for Omaha, Nebraska. Therefore, ONT is distinctly linked to Ontario, California, providing clarity for travelers in identifying their departure or arrival cities.