Which airport code represents Ontario, California?

The airport code that represents Ontario, California, is ONT. Each airport code, also known as an IATA code, consists of three letters that uniquely identify airports around the world, and they often bear a resemblance to the name of the location they serve. In the case of Ontario International Airport, the code ONT is derived from the city's name, making it easy to remember.

Other airport codes listed do not correspond to Ontario, California. For instance, ORD is the code for O'Hare International Airport in Chicago, OGG is for Kahului Airport in Hawaii, and PBI represents Palm Beach International Airport in Florida. These distinctions clarify why ONT is specifically designated for Ontario, California, while the others serve entirely different locations.