How early should I arrive at the Southwest ONT Terminal for my flight?

It is recommended that passengers arrive at the Southwest ONT Terminal at least 90 minutes before the scheduled departure time for domestic flights. This allows enough time for check-in, security screening, and navigating the terminal. For those checking baggage, arriving even earlier—around two hours before departure—is advisable to avoid potential delays.

The Southwest ONT Terminal is designed for efficiency, but factors like peak travel times, holidays, or unexpected delays can increase wait times. Passengers who have already checked in online and are traveling with carry-on luggage can save time but should still allocate sufficient time to pass through security and find their gate.

If you are unfamiliar with the Southwest ONT Terminal layout, arriving early ensures you have time to locate amenities such as restrooms, dining options, and boarding gates without rushing. The terminal features helpful signage and customer service agents to assist travelers as needed.

To streamline your experience, check your flight status through the Southwest app or website before heading to the Southwest ONT Terminal. Being punctual not only reduces stress but ensures a smoother boarding process, giving you ample time to relax before your flight.