Cheap Flights to Las Vegas: Tips to Score the Best Deals

Las Vegas is one of the most flight-competitive routes in the US — and that's actually great news for travelers. Dozens of airlines battle for the same passengers flying into Harry Reid International Airport (LAS), which keeps fares lower than almost any other major destination. Here's exactly how to find the cheapest flights to Las Vegas and when to pull the trigger.

Why Las Vegas Has Some of the Cheapest Airfare in the US

More airlines compete for Las Vegas passengers than almost any other domestic destination. Southwest, Spirit, Frontier, Alaska, Delta, United, American, and a rotating cast of regional carriers all run regular service to LAS. That level of competition means airlines can't sustain inflated pricing — a fare spike on one carrier gets undercut by another within hours.

Las Vegas also has extremely high passenger volume year-round, which lets airlines offer economy-of-scale pricing they can't extend to lower-traffic routes. More flights, more seats, more competition. The result: you can frequently find round-trip fares from major US cities under $150 — and sometimes well under $100 during fare sales. This route is one of the most liquid in the country, which means deals appear more often and more reliably than almost anywhere else.

Best Time to Fly to Las Vegas

Not all weeks are equal on this route. The Las Vegas event calendar directly drives airfare spikes — avoid the wrong weekends and you'll consistently find lower prices.

Avoid these windows:

• Super Bowl weekend — even when the game isn't played in Las Vegas, the city fills with massive watch parties and events that push flight and hotel prices sky-high
• New Year's Eve — the Strip is legendary for it, and the price premium is severe (book 3–4 months out if you must go)
• Major boxing, UFC, and MMA events — fight weekends regularly spike fares 50–80% above normal
• NFL game days — Las Vegas now has the Raiders, and home game weekends add concentrated demand to an already-busy market
• March Madness and spring break — late March through mid-April is one of the busiest windows of the year

Best times to fly cheap to Las Vegas:

• January–February (post–New Year's) — a distinct post-holiday lull sends demand down and prices with it
• Mid-September through mid-October — summer heat has passed, no major scheduled events, fares hit their seasonal floor
• Midweek year-round — Tuesday and Wednesday departures run 15–25% cheaper than weekend flights on the LAS route

Which Airlines Fly to Las Vegas (LAS)

Here's a breakdown of who serves Las Vegas and what to expect from each:

Budget Carriers

Southwest is the most popular choice for Las Vegas and often the most price-competitive from its hub cities (Chicago Midway, Baltimore, Dallas Love, Houston Hobby, and more). Critically, Southwest's fares don't appear on Google Flights, Kayak, or Expedia — always check southwest.com directly alongside any aggregator search.

Spirit and Frontier offer rock-bottom base fares — sometimes $29–$59 one way from East Coast cities — but charge separately for carry-on bags and seat selection. Calculate the all-in price before assuming they're cheaper than mainline carriers.

Major Carriers

Delta, United, and American all run strong nonstop service to LAS from their hub cities. From Atlanta (Delta), Houston (United), Dallas and Miami (American) — these hubs have high enough demand that nonstop fares stay competitive. Alaska Airlines excels on West Coast routes from Seattle, Portland, and California cities, frequently matching or beating other carriers.

Best Airports to Fly From for Cheap Fares

Competition on the LAS route varies significantly by departure city. Hubs with heavy Las Vegas traffic consistently deliver the lowest fares:

• Los Angeles (LAX/BUR/LGB/ONT) — so many daily flights that fares regularly dip under $59 one way
• Phoenix (PHX) — extremely short flight (~50 min), budget carrier heavy
• Dallas (DFW/DAL) — heavy competition from American, Southwest, and Spirit
• Chicago (ORD/MDW) — multiple carriers running frequent fare wars
• New York metro (JFK/EWR/LGA) — higher base prices for the cross-country distance, but strong competition keeps a lid on spikes

If you're flying from a smaller regional airport, check whether a short drive or train ride to a nearby hub unlocks meaningfully better fares. The difference can be $100+ on a single ticket.

How Far in Advance to Book Las Vegas Flights

For most domestic travelers, the 1–3 month booking window is the sweet spot for cheap Las Vegas flights. Unlike international destinations, Las Vegas doesn't require months of lead time — the route is so liquid with flights and passengers that good fares appear consistently across a broad window.

• 6–8 weeks out: Generally solid pricing with better seat selection
• 3–6 weeks out: Often the best combination of competitive price and available inventory
• Under 2 weeks: Prices tend to spike unless you catch a specific promotional sale or fare error

Tips to Score the Lowest Fares

Set fare alerts, don't just search once. Google Flights, Hopper, and Kayak all let you monitor the route and alert you when prices drop. Vegas fares fluctuate frequently — a $220 fare this Monday might be $149 next Tuesday when an airline runs a targeted promotion.

Fly Tuesday or Wednesday. Mid-week departures consistently run 15–25% cheaper than weekend flights on the LAS route. A one-day shift from Saturday to Wednesday can save $50–$100 round trip without changing anything else about your trip.

Always check Southwest directly. Because Southwest doesn't list on aggregators, you need to check southwest.com separately every time you search. The best fare on Google Flights might be beaten by a Southwest option that's entirely invisible to you otherwise.

Avoid Super Bowl weekend specifically. This is the single most expensive non-holiday weekend of the year in Las Vegas. Even when the game is in another city, the Strip turns into the world's largest watch party. Flights and hotels spike dramatically. If your dates are flexible at all, shift one week before or after.

Consider bundling flight and hotel. Expedia's package pricing on Las Vegas trips often runs 10–20% cheaper than booking each separately. If you haven't locked in your hotel yet, check the bundle price before booking anything on its own.

Search Cheap Flights to Las Vegas

Ready to find your fare? Prices on the Las Vegas route move quickly, and good deals appear and disappear fast. Compare current fares across airlines and lock in before the next event weekend drives prices back up.

Search cheap flights to Las Vegas →

Also check the Las Vegas travel guide for hotel picks and trip planning tips once your flight is locked in. And browse the Our Travel Vault deals page for current promotions across flights and hotels at the same time.