Because it's so convenient, I always fly out of Southwest Airlines ONT Terminal. The TSA line runs swiftly, parking is nearby and reasonably priced, and the airport is simple to navigate. Check-in and boarding are made easy by the polite and professional Southwest staff at ONT. The terminal has good food and drink options and is kept up nicely. ONT is ideal since it has less traffic and a much more laid-back vibe than larger airports.

Location and Accessibility

Southwest Airlines operates out of Terminal 4 at Ontario International Airport. Located just 38 miles east of downtown Los Angeles, ONT is easily accessible via major highways such as the I-10 and I-15, making it a preferred airport for travelers from the Inland Empire, San Gabriel Valley, and even parts of Orange County.

One of the biggest advantages of flying out of ONT compared to other airports in the region is the ease of access. Unlike LAX, which is notorious for its congestion, ONT offers a more relaxed and efficient experience. Parking is readily available, and the terminals are designed to minimize walking distances, ensuring a hassle-free start to your trip.

Check-In and Security Process

Passengers flying with Southwest Airlines from ONT can take advantage of the airline’s user-friendly check-in process. Southwest allows travelers to check in online 24 hours before departure, ensuring they get a better boarding position, as the airline operates an open-seating policy. If you prefer to check in at the airport, self-service kiosks and friendly Southwest staff are available in Terminal 4 to assist with the process.

The Transportation Security Administration (TSA) checkpoint at Terminal 4 is known for being relatively quick compared to larger airports. While peak travel times can lead to longer wait times, ONT generally offers a smoother security screening experience. Travelers enrolled in TSA PreCheck can benefit from expedited screening, reducing the stress of getting to their gate on time.

Terminal Amenities and Dining Options

Once inside Terminal 4, travelers will find a variety of amenities designed to enhance their pre-flight experience. Southwest Airlines ensures a comfortable waiting environment with ample seating, charging stations, and free Wi-Fi for passengers to stay connected.

For those looking to grab a bite before their flight, Terminal 4 has several dining options, ranging from quick snacks to sit-down meals. Popular choices include:

1. WPizza by Wolfgang Puck – Serving fresh, gourmet pizzas and salads for travelers seeking a satisfying meal.

2. Cross Grain Brewhouse – A great spot for enjoying craft beer and hearty American cuisine.

3. Coffee Bean & Tea Leaf – Perfect for a caffeine fix before an early morning or late-night flight.

In addition to dining options, travelers will find retail shops where they can pick up last-minute essentials, magazines, or souvenirs. ONT’s layout ensures that all these conveniences are within a short walk from Southwest Airlines' departure gates.

Boarding and Flight Experience

Southwest Airlines is known for its unique boarding process, which differs from traditional airlines. Instead of assigned seating, passengers are assigned a boarding group (A, B, or C) and a position number within that group. The earlier you check in, the better your boarding position. Business Select and A-List passengers get priority boarding, while families with young children can also take advantage of early boarding opportunities.

Flights from ONT cover a variety of domestic destinations, including Las Vegas, Denver, Phoenix, and Dallas. With Southwest’s generous baggage policy—allowing two checked bags per passenger for free—travelers can avoid the extra fees that many other airlines charge. The airline’s friendly staff and in-flight service, which includes complimentary snacks and beverages, make for an enjoyable journey.

Baggage Claim and Ground Transportation

Upon arrival at ONT, Southwest Airlines passengers will find a streamlined baggage claim process. The airport’s design allows for quick access to baggage carousels, meaning travelers can collect their luggage and exit the terminal efficiently. The airport’s smaller size ensures that wait times for checked bags are typically shorter than at larger hubs.

For ground transportation, ONT offers several options, including rental car services, ride-sharing platforms like Uber and Lyft, taxis, and public transportation. Shuttle services to nearby cities and hotels are also available, making onward travel seamless.

Why Choose ONT for Your Next Southwest Airlines Flight?

Flying Southwest Airlines from ONT comes with several advantages:

1. Less congestion – Avoid the long lines and heavy traffic associated with LAX.

2. Convenient parking – ONT offers ample parking options close to the terminals at reasonable rates.

3. Quicker security checks – Shorter lines mean less time waiting at TSA checkpoints.

4. Easy terminal navigation – A straightforward layout ensures a stress-free airport experience.

5. Reliable Southwest service – Enjoy the airline’s signature hospitality and generous baggage policy.

For travelers in Southern California, Ontario International Airport serves as an excellent gateway to domestic destinations, and Southwest Airlines enhances the experience with its efficient and customer-centric services. Whether you're flying for business or leisure, the Southwest Airlines ONT Terminal provides a seamless travel experience from start to finish. Next time you're planning a trip, consider flying Southwest from ONT—you might just find it to be your new favorite airport.