$69 Cheap Southwest Airlines flights Denver (DEN) to Dallas (DAL)

Finding cheap one-way Southwest Airlines flights from DEN to DAL from $69 on Expedia is a cinch — just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares from $137 for your next adventure.**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.

For cheap Southwest Airlines fares from Denver Intl. Airport (DEN) to Love Field Airport (DAL), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the overall price. Sunday is typically the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**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 DAL with Southwest Airlines departs at 5:30AM UTC-7. You'll land at 8:35AM UTC-6. The last Southwest Airlines flight of the day takes off at 8:10PM UTC-7 and arrives at 11:05PM UTC-6. With approximately 20% fewer cancellations for morning and mid-morning flights, beginning your travel day early is often the wisest option.**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.