$69 Cheap Southwest Airlines flights Denver (DEN) to Las Vegas (LAS)

You can find affordable round-trip Southwest Airlines flights from $137 from DEN to LAS by sorting your results from “Price (lowest to highest)” on Expedia. Or look for options from $69 for a one-way journey.**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.

January is one of the most affordable months to jet off to Las Vegas with Southwest Airlines. You could also find great prices on one-way and round-trip tickets in June.

To find cheap Southwest Airlines fares from Denver Intl. Airport (DEN) to Harry Reid Intl. Airport (LAS), start searching one to three months before your intended 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 cost. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by choosing to book 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.

Book a seat on one of Southwest Airlines’s 62 direct weekly flights from Denver Intl. Airport (DEN) to Harry Reid Intl. Airport (LAS). To view available options, enter your origin, dates and destination and hit search. Then use the “Nonstop” and “Airline” filters.

Leave Denver Intl. Airport (DEN) for Harry Reid Intl. Airport (LAS) on a nonstop Southwest Airlines flight, and you’ll be in the skies for around 2h 6m.

Saturday has the most Southwest Airlines flights from Denver Intl. Airport (DEN) to Harry Reid Intl. Airport (LAS). With 10 daily departures, this is the best day of the week to book something that will suit your schedule.

The earliest Southwest Airlines flight from DEN to LAS departs at 5:55AM UTC-7, arriving at 7:05AM UTC-8. If you prefer to jet off later in the day, the last Southwest Airlines flight leaves DEN at 9:45PM UTC-7 and touches down at LAS at 10:45PM UTC-8. Flying early is generally a smart option as morning flights are less likely to experience cancellations.**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.

Southwest Airlines flights from Denver Intl. Airport (DEN) to Las Vegas land at Harry Reid Intl. Airport (LAS). This is the main gateway here.

You’ll likely be on a Boeing 737-800 or a Boeing 737-700 when flying Southwest Airlines from Denver Intl. Airport (DEN) to Harry Reid Intl. Airport (LAS). However, keep in mind that a different aircraft could be assigned to your route due to operational requirements.

Depending on your fare type, a fee will generally apply if you modify or cancel your flight more than 24 hours after confirmation. To find tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when you search for flights. For additional information on canceling or changing your reservation, visit “Trips,” select your flight and click on “Manage Booking.”