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

Apply the "Price (lowest to highest)" filter on Expedia to look for cheap Southwest Airlines round-trip flights from $137 from DAL to DEN. Affordable one-way fares from $69 are also on offer.**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 Love Field Airport (DAL) to Denver Intl. Airport (DEN), start searching one to three months before your intended departure. Securing 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 cost. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip 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 first flight from DAL to DEN with Southwest Airlines departs at 6:00AM UTC-6. You'll touch down at 7:05AM UTC-7. The last Southwest Airlines flight of the day leaves at 8:40PM UTC-6 and arrives at 9:45PM UTC-7. With around 20% fewer cancellations for early and mid-morning departures, heading out early is generally the smartest 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.