What is the airline code for United Airlines?

The airline code for United Airlines is UA. Airline codes, also known as IATA codes, are three-letter designations used for the identification of airlines around the world. United Airlines, being one of the major domestic and international airlines based in the United States, is assigned the code UA to streamline ticketing, baggage handling, and flight operations. This code is universally recognized among travel agents, travelers, and within the aviation industry, making it a vital part of air travel communication.

The other options, while representing valid airline codes, correspond to different carriers. For instance, F9 stands for Frontier Airlines, AA is the code for American Airlines, and DL represents Delta Air Lines. Each of these codes serves its own airline, highlighting the importance of accurate identification in airline operations.