Southwest Airlines is proud to serve Ontario International Airport.
Whether you’d like to see what else the West has to offer or try the Midwest on for size, there’s no need to brave the mid-city traffic when you can catch a convenient Southwest flight closer to home. Even though you’re leaving, everything’s a little easier when you’re closer to home. Find a Southwest flight that works for you out of Ontario International Airport.
Not sure where to head next? Explore the list of places that Southwest flies out of Ontario International Airport and see which locale inflicts you with a bit of a travel bug. Find yourself just the change of scenery that’ll suit your needs, whether that’s a jaunt up to the Pacific Northwest, a trip over to the Rockies, or a visit to the Great Lakes. Trade Tinseltown for any town to which Southwest flies, so long as it’s the town that’s right for you.
While there’s little that can’t be found in the Los Angeles area, you’ll surely discover something surprising wherever you travel on a flight with Southwest Airlines. Explore enticing add-ons and earn Rapid Rewards® points when you fly. All the while, you’ll enjoy a straightforward booking process, from flight selection to the time you board your flight. See what else makes the Southwest® Experience special today.
*Fares are updated hourly. Fares displayed on external channels may no longer be available at time of booking. To find the most updated fare, please visit Southwest.com. Restrictions and exclusions apply. Seats and dates are limited. Fares may vary by destination, flight, and day of week and won't be available on some flights that operate during very busy travel times and holiday periods.
Got flexible travel plans?
Use our Low Fare Calendar to find the lowest fares on flights from Ontario available inside your travel window.
Cities with daily nonstop flights Monday through Friday from ONT
11‡
Cities with daily nonstop flights Saturday through Sunday from ONT
11§
*Fares are updated hourly. Fares displayed on external channels may no longer be available at time of booking. To find the most updated fare, please visit Southwest.com. Restrictions and exclusions apply. Seats and dates are limited. Fares may vary by destination, flight, and day of week and won't be available on some flights that operate during very busy travel times and holiday periods.
†Weekly flights based on DOT published scheduled average flights Monday through Sunday between 4/1/2025 and 4/30/2025. Note: route may not operate every day of the week.
‡Nonstop flights based on DOT published scheduled average flights Monday through Friday between 4/1/2025 and 4/30/2025.
§Nonstop flights based on DOT published scheduled average flights Saturday through Sunday between 4/1/2025 and 4/30/2025.
You can use your points to book any seat, on any flight, no exceptions. Any day, any time, any flight, your points are ready to take you to where you want to go.
Your points don’t expire.
You can earn points on flights and on everyday purchases with our partners, which makes getting to your destination easy. No matter when, or where, you earn them, your points won’t expire.
