The Southwest Airlines ONT Terminal ensures a smooth journey. It's very easy to check-in onboard and pass through security on time or to even wait in comfort. All the mandatory dining options and services are well-equipped within the terminal, making the journey much more enjoyable. With numerous domestic flights to some of America's most popular locations, ONT's Southwest ensures that travel hassles are avoided by all business and leisure travelers. One will have hassle-free service and a friendly environment while flying with Southwest Airlines at ONT.