$70 Cheap Southwest Airlines flights Denver (DEN) to Los Angeles (LAX)

You'll find affordable round-trip Southwest Airlines flights from $139 from DEN to LAX by organizing your results from "Price (lowest to highest)" on Expedia. Or look for options from $70 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.

Look for cheap Southwest Airlines flights from Denver Intl. Airport (DEN) to Los Angeles Intl. Airport (LAX) one to three months prior to your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

The earliest flight from DEN to LAX with Southwest Airlines leaves at 7:00AM UTC-7. You'll touch down at 8:50AM UTC-8. The final Southwest Airlines flight of the day leaves at 9:35PM UTC-7 and arrives at 11:15PM UTC-8. With 20% fewer cancellations for early and mid-morning flights, jetting out early is typically the best choice.**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.