What airline is indicated by the code G4?

The airline indicated by the code G4 is Allegiant Air. In the aviation industry, airlines are assigned unique two-letter codes by the International Civil Aviation Organization (ICAO) and three-letter codes by the International Air Transport Association (IATA). Allegiant Air's IATA code is G4, making it easily identifiable among various carriers. This coding system helps in efficiently managing flight operations and logistics on a global scale, facilitating ticketing and baggage handling, as well as informing passengers of the airline's identity. Recognizing the significance of these codes is essential for those working in the airline industry, including flight attendants, as it directly relates to passenger service and operational procedures.