Submit feedbackComplete travel information for your September journey
September is a strong month to depart from Denver International Airport (DEN) for Las Vegas thanks to milder weather, fewer summer crowds, and frequent nonstop flights. Travelers can take advantage of lower shoulder-season fares after Labor Day; midweek departures often yield the best prices. Nearby destinations commonly accessed from DEN include Boulder, Colorado Springs, Aspen, Vail, Breckenridge, and Rocky Mountain National Park — perfect for combining a mountain retreat with a Las Vegas weekend. Book early for popular dates like Labor Day weekend and check airline fare calendars to capture last-minute deals.
From downtown Denver to Denver International Airport (DEN), the University of Colorado A line train provides a direct and reliable option taking about 37 minutes; rideshares and taxi services are widely available but can take longer during morning and evening rush. In September traffic is typically lighter than summer peak travel, though Broncos game days and Labor Day weekend can increase travel times, so leave extra time and consider the train for consistent schedules.
September in Denver usually brings mild, mostly clear weather and fewer winter-related delays than later months, but afternoon thunderstorms in the mountains can occasionally affect inbound/outbound flights. Travelers should check real-time alerts from Denver International Airport (DEN) and airline notifications on travel day and allow a buffer for schedule changes.
Denver International Airport (DEN) offers multiple parking options including Economy Lot, East/West Garages, and cell phone waiting lots for quick passenger pickups. In September, rates may be slightly lower than peak summer travel; reserve long-term parking online for the best price and use the cell phone lot to avoid circling for curbside spots.
Nonstop flights from Denver International Airport (DEN) to Harry Reid International Airport (LAS) in September are commonly operated by Southwest Airlines, Frontier Airlines, United Airlines, American Airlines, and Delta Air Lines. Frequency increases during holiday weekends like Labor Day, so check airline schedules and book early for the best fares.
Pack layers for early morning or late-night temperature swings and carry sunscreen for sunny transit days; Denver's altitude can make you feel dehydrated, so drink water before flying. Check for Broncos game day traffic and book flights outside major holiday windows for lower fares and smoother security lines.
Arriving at Harry Reid International Airport (LAS) in September gives travelers the advantage of warm days, cooler evenings, and fewer peak-summer crowds. Ground transport is abundant: taxis, rideshares, and rental car centers are efficient and often quicker after Labor Day. Top nearby destinations accessible from LAS include the Las Vegas Strip, Henderson, North Las Vegas, Hoover Dam, Grand Canyon, and nearby weekend gateways like Los Angeles or Phoenix for onward travel. For best value, book show tickets and major attractions in advance and consider midweek arrival dates to find cheaper hotels and flights.
Nonstop flights from Denver International Airport (DEN) to Harry Reid International Airport (LAS) typically take about 1 hour 45 minutes to 2 hours, depending on winds and routing. September's generally stable weather often results in on-time performance, but always check your airline's live status for gate changes or delays.
Harry Reid International Airport (LAS) offers taxis, rideshares, shuttle buses, and rental car services with dedicated pickup zones; many hotels on the Las Vegas Strip provide free shuttle service. Visiting in September means slightly lower demand after summer peak, making rideshares and rental cars more readily available and sometimes cheaper — book in advance for the best selection.
For domestic arrivals from Denver International Airport (DEN) you will use standard baggage claim carousels at Harry Reid International Airport (LAS); no customs processing is required. If you have a connecting international flight, confirm whether baggage is checked through and consult your airline for transfer procedures.
September still offers warm weather ideal for poolside afternoons and evening shows, but hotel rates often dip after Labor Day, making it a good time for value-conscious travelers. Crowds vary with conventions and weekend events, so check entertainment schedules and book shows or dining in advance to secure the best seats and rates.
From Harry Reid International Airport (LAS) visitors often head to the Las Vegas Strip, Hoover Dam, Grand Canyon tours, Lake Mead, and nearby cities like Henderson and North Las Vegas. September is comfortable for Grand Canyon day trips with cooler mornings and clear skies; booking tours or car rentals ahead ensures availability.
September hosts a range of events that can influence flight demand and hotel rates. In Las Vegas, the Life is Beautiful music and arts festival typically occurs in downtown Las Vegas in early September and can raise demand at Harry Reid International Airport (LAS). Sporting events — including Las Vegas Raiders NFL games — and conventions may also affect airport traffic. Around Denver, early fall brings outdoor festivals, fall foliage viewing in nearby mountain towns like Aspen and Vail, and Broncos home games that can increase departures from Denver International Airport (DEN). Travelers should book flights early and allow extra time for airport transfers on event dates.
For September travel, the best time to fly from Denver International Airport (DEN) to Harry Reid International Airport (LAS) is midweek (Tuesday–Thursday) when fares and crowds are typically lower. Early morning red-eyes and late-night departures often deliver cheaper tickets and quicker security lines. Avoid flying on or directly after Labor Day weekend if you want the best combination of price and convenience; book 3–6 weeks in advance for optimal domestic fares.
Nonstop flights from Denver International Airport (DEN) to Harry Reid International Airport (LAS) are almost always the quickest and most convenient option, taking roughly 1 hour 45 minutes. Connecting flights can sometimes be cheaper but add significant travel time and increase the chance of missed connections and baggage delays. For short domestic hops like DEN to LAS in September, prioritize nonstop flights if you value time and reliability; consider a connection only if it offers substantial savings or needed scheduling flexibility.
Major carriers on the Denver International Airport (DEN) to Harry Reid International Airport (LAS) route include Southwest Airlines, Frontier Airlines, United Airlines, American Airlines, and Delta Air Lines. Southwest often offers competitive fares with two free checked bags, making it a strong choice for families and value-focused travelers. Frontier is typically the lowest base fare but charges for seat assignments and baggage. Legacy carriers like United, American, and Delta provide more schedule options, premium seating, and loyalty benefits. Compare total trip cost including baggage and seat fees before booking.
Pack layers for Denver side trips—mornings can be cool in the mountains—while bringing lightweight, breathable clothing and sunscreen for Las Vegas. Stay hydrated: Denver's altitude can intensify dehydration, and Las Vegas heat may persist into September. For smoother travel, arrive at Denver International Airport (DEN) at least 90 minutes before domestic departures during busy weekends, and pre-book shuttles or rideshares for arrivals at Harry Reid International Airport (LAS). Check local air quality reports in September during wildfire season and consider travel insurance for weather-related disruptions.
Average nonstop flight time from Denver International Airport (DEN) to Harry Reid International Airport (LAS) is about 1 hour 45 minutes to 2 hours. Multiple daily departures are available from carriers like Southwest, Frontier, United, American, and Delta, with increased frequency during weekends and holiday periods such as Labor Day. Early morning and late evening flights may be less crowded and sometimes cheaper; always confirm exact departure and arrival times with the airline since seasonal schedule adjustments often occur in September.
To find cheap flights from Denver International Airport (DEN) to Harry Reid International Airport (LAS) in September, set flexible date searches and fare alerts with Google Flights, Kayak, or airline sites. Midweek departures (Tuesdays and Wednesdays) and early morning flights typically offer the lowest fares; consider budget carriers like Frontier or Southwest for promotional rates. Avoid booking too close to Labor Day and check round-trip vs one-way pricing—sometimes two one-ways across different carriers are cheaper. Use airline loyalty points or credit card travel portals for additional savings and always compare baggage fees when evaluating low-cost options.