$196 Cheap Southwest Airlines flights Nashville (BNA) to Ontario (ONT)

You'll discover affordable round-trip Southwest Airlines flights from $383 from BNA to ONT by organizing your results from "Price (lowest to highest)" on Expedia. Or look for deals from $196 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Begin your search one to three months before your departure to score cheaper fares on Southwest Airlines flights from Nashville Intl. Airport (BNA) to Los Angeles - Ontario Intl. Airport (ONT). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic trips.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

Departing BNA at 12:35PM UTC-6, the earliest Southwest Airlines flight to ONT arrives at 3:20PM UTC-8. Traveling early means you'll be less likely to experience delays.* Prefer a later start? The last Southwest Airlines flight from BNA to ONT departs at 12:35PM UTC-6 and touches down at 3:20PM UTC-8.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.