
Cheapest Flights ATL-LAS: Expert Insights for Finding the Best Deals
Planning a trip from Atlanta to Las Vegas doesn’t have to drain your wallet. The route between Hartsfield-Jackson Atlanta International Airport (ATL) and Harry Reid International Airport (LAS) is one of the most competitive airline markets in the United States, which means savvy travelers can find exceptional deals with the right strategies. Whether you’re heading to Vegas for a weekend getaway, business conference, or family vacation, understanding how to navigate this popular route will help you secure the lowest possible fares.
The Atlanta to Las Vegas corridor sees consistent demand throughout the year, with multiple airlines competing for passengers. This competition is your advantage. By learning when to book, which airlines offer the best value, and what factors influence pricing, you can save hundreds of dollars on your airfare. This comprehensive guide shares expert insights and practical tactics to help you find the cheapest flights from ATL to LAS.

Best Times to Book ATL-LAS Flights
Timing your ticket purchase is one of the most critical factors in securing cheap flights from Atlanta to Las Vegas. Industry research consistently shows that booking patterns significantly impact available fares. For domestic routes like ATL-LAS, the optimal booking window typically falls between 1-3 months before your departure date. This timeframe allows airlines to have released their schedule and prices while demand hasn’t peaked.
Tuesday and Wednesday are traditionally the cheapest days to book flights, as airlines often release sales and adjust pricing on these days. If you’re flexible with your travel dates, flying on these same weekdays (Tuesday through Thursday) can result in savings of 10-25% compared to weekend flights. The reason is straightforward: business travelers dominate weekend flights, while leisure travelers have more flexibility during the week.
Early morning departures (typically before 8 AM) and late evening flights (after 8 PM) are almost always cheaper than mid-day options. While these times may seem inconvenient, the price difference can be substantial—sometimes $50-150 per ticket on the ATL-LAS route. Additionally, red-eye flights departing Atlanta late at night often feature the lowest fares, though they require adjusting your sleep schedule.
For more detailed guidance on optimal booking strategies, check out our comprehensive article on the best times to book airline tickets to maximize your savings across all routes.

Airlines Operating This Route
Several major carriers operate flights between Atlanta and Las Vegas, and understanding their pricing models and service quality helps you make informed decisions. Southwest Airlines is a dominant player on this route, offering multiple daily flights and their famous two free checked bags policy. Southwest fares tend to be competitive, and their flexibility with rebooking makes them attractive for budget-conscious travelers.
Delta Air Lines, headquartered in Atlanta, operates numerous flights to Las Vegas. As the home carrier at ATL, Delta sometimes offers competitive fares, though they may not always be the cheapest option. Their elite frequent flyer program members often find good value, and their extensive route network provides convenient connections if needed.
United Airlines and American Airlines also maintain regular service on this route. United often competes aggressively on pricing, while American typically positions itself in the mid-range. Budget carrier Allegiant Air occasionally offers ultra-low base fares but charges for everything beyond the ticket, so calculate total costs carefully.
To understand which carriers offer the best overall value, explore our detailed analysis of best airlines for long flights, which includes insights on service quality and hidden fees across major carriers.
When comparing airlines, always factor in baggage policies, seat selection fees, and other ancillary charges. Southwest’s included bags can make their slightly higher base fare the cheapest overall option. Conversely, if you’re traveling light with just a carry-on, budget carriers might offer genuine savings.
Money-Saving Strategies
Beyond timing and airline selection, several proven strategies can significantly reduce your ATL-LAS flight costs. Price alerts are invaluable tools—set them on major booking platforms for your specific route and dates. These alerts notify you when fares drop, allowing you to book immediately when prices reach your target threshold.
Flexibility is your greatest asset. If you can shift your travel dates by even one day, you might find fares that are 20-40% cheaper. Use flexible date search features on booking sites to view price calendars showing the cheapest days in your desired travel period. Sometimes flying out on Wednesday instead of Friday can save $100-200 per person.
Consider booking one-way tickets separately rather than round-trip packages. While this seems counterintuitive, sometimes two one-way tickets on different airlines cost less than a bundled round-trip. This strategy requires more research but can yield surprising savings on the ATL-LAS route.
Clearing your browser cookies before searching for flights prevents airlines from tracking your searches and potentially raising prices. Use incognito or private browsing mode, and consider using a VPN to search from different locations, as airlines sometimes vary pricing by geography.
Joining airline frequent flyer programs is free and provides access to exclusive fares and sales. Delta’s SkyMiles, Southwest’s Rapid Rewards, and United’s MileagePlus programs frequently offer member-only discounts. You’ll also accumulate miles toward future free flights even when booking discounted fares.
For comprehensive strategies on securing affordable airfare, review our guide on how to find cheap airline tickets, which applies booking principles across all routes.
Seasonal Price Variations
Las Vegas experiences distinct seasonal travel patterns that directly impact flight prices from Atlanta. Understanding these patterns helps you time your trip strategically. Peak season runs from March through May and September through November, when moderate weather and major events drive demand. Expect to pay premium prices during these periods, with fares often 30-50% higher than off-season rates.
Summer months (June-August) present a paradox. While weather is extremely hot in Las Vegas, families travel for school breaks, keeping prices elevated. However, the absolute hottest weeks (mid-July through mid-August) sometimes see reduced demand as some travelers avoid the intense heat, creating occasional bargain windows.
Winter months (December-February) are generally expensive due to holiday travel and winter escape demand. The week between Christmas and New Year’s is particularly expensive, often the priciest time to fly this route. However, January after the holidays can offer surprisingly good deals as post-holiday travel demand decreases.
Shoulder seasons (late February, early June, late August) often provide the best value. These periods fall between peak and off-peak seasons, offering reasonable prices without the extreme crowds. October and early November are particularly good for finding cheap ATL-LAS flights, as summer travel has ended and holiday season hasn’t begun.
Major Las Vegas events affect pricing significantly. The Consumer Electronics Show (January), March Madness, Super Bowl week (early February), and major concert/sporting events all drive up fares. Conversely, researching the Las Vegas events calendar helps you avoid expensive travel dates.
Alternative Airports and Routes
While Harry Reid International (LAS) is the primary Las Vegas airport, considering alternative airports can sometimes yield cheaper flights. McCarran International is technically the same facility (Harry Reid is the newer terminal), so this doesn’t apply for Las Vegas, but the principle matters for other routes.
For Atlanta departures, Hartsfield-Jackson (ATL) is the obvious choice as it’s the major hub, but exploring alternative airports isn’t practical. ATL is the world’s busiest airport with the most flight options, making it your best bet for competitive pricing.
However, consider booking multi-city itineraries if your travel plans are flexible. Sometimes flying ATL to a nearby city and then to Las Vegas costs less than a direct ATL-LAS flight. Research options through Southwest Airlines, Delta Air Lines, and United Airlines websites to compare these scenarios.
Connecting flights are almost always cheaper than direct flights on the ATL-LAS route. While you’ll spend extra time traveling, connecting through hubs like Denver, Phoenix, or Dallas can save $50-150 per ticket. If you have flexible schedules and tolerance for longer travel times, this strategy significantly reduces costs.
Technology and Tools
Modern technology provides powerful tools for finding the cheapest flights. Google Flights is exceptionally useful for the ATL-LAS route, allowing you to set price alerts, view price calendars, and track historical pricing trends. The flexible dates feature shows prices across an entire month, helping you identify the absolute cheapest days.
Kayak and Skyscanner aggregate prices from multiple airlines and booking sites, ensuring you see all available options. Set up price alerts on these platforms for your specific dates and receive notifications when fares drop. The savings often justify the small effort required to set up alerts.
Airline websites should always be checked directly. While third-party sites are convenient, airlines sometimes offer exclusive deals on their own websites. Booking directly also simplifies customer service issues and changes.
Travel blogs and websites like Sky Voyage Hub Blog regularly publish tips and insights on finding cheap flights. Subscribe to travel newsletters and follow aviation blogs to stay informed about sales, route changes, and new airline strategies affecting your preferred routes.
Consider using incognito browsing and VPN services strategically. Airlines track repeat visitors and may increase prices for frequent searchers. Clearing cookies and using different browsers prevents this tracking, ensuring you see the lowest available prices.
Loyalty programs deserve emphasis here. Airlines: Key Information and Tips for Travelers provides detailed information on how to maximize frequent flyer programs. Accumulating miles through credit card spending and actual flights can eventually provide free or heavily discounted tickets on the ATL-LAS route.
FAQ
What is the cheapest month to fly from Atlanta to Las Vegas?
January (after the holidays), February (excluding Super Bowl week), and September typically offer the cheapest fares. October and early November are also excellent for finding deals. Avoid December, March-May, and July-August for best pricing.
How far in advance should I book an Atlanta to Las Vegas flight?
Book 1-3 months in advance for optimal pricing. Booking too early (more than 3 months ahead) or too late (less than 2 weeks) typically results in higher fares. However, if you find a good price, book it regardless of this timeline.
Are connecting flights significantly cheaper than direct flights on this route?
Yes, connecting flights typically cost $50-150 less per ticket than direct flights. If you have flexible schedules and can tolerate longer travel times, connecting flights through Denver, Phoenix, or Dallas offer substantial savings.
Do Tuesday departures really cost less than other days?
Tuesday through Thursday departures are generally cheaper than weekend flights by 10-25%. Tuesday and Wednesday bookings also tend to yield lower fares. However, this varies by specific dates and seasons, so always check flexible date options.
Which airline offers the best value for Atlanta to Las Vegas flights?
Southwest Airlines offers competitive pricing plus two free checked bags, making them excellent value. Delta offers frequent sales as the ATL home carrier. Compare total costs including baggage fees across all carriers, as the cheapest base fare isn’t always the best overall deal.
Can I save money using budget airlines like Allegiant?
Allegiant’s base fares are sometimes cheaper, but factor in fees for seat selection, baggage, and changes. Calculate total cost before booking. For round-trip flights with checked bags, traditional carriers often cost less despite higher base fares.
Is flying early morning or late night really cheaper?
Yes, early morning flights (before 8 AM) and late evening flights (after 8 PM) consistently cost 10-25% less than mid-day flights. Red-eye flights are often the absolute cheapest option if you can adjust your sleep schedule.
Should I book round-trip or separate one-way tickets?
Usually round-trip packages are cheaper, but occasionally booking two one-way tickets on different airlines costs less. Use flexible search options to compare both scenarios before deciding.