Cheap Flights to Vegas: How to Find the Lowest Fares in 2026
Las Vegas is one of the cheapest cities in the United States to fly into, if you know when to book and which airline to pick. A runway packed with discount carriers and nonstop routes from nearly every mid-sized airport in the country keeps competition sharp, and that keeps fares low. On a good week you can reach Harry Reid International Airport (LAS) for under $50 from Los Angeles and under $100 from much of the Midwest.
This guide breaks down exactly how to find cheap flights to vegas, using real fare ranges, the specific days that save money, and the airline quirks that quietly add $80 to your ticket after you think you got a deal.
Why Vegas Airfare Swings So Much
Vegas fares move more than almost any other domestic destination, and it comes down to one fact: Las Vegas is a convention and events city before it is a vacation city. The same route that costs $49 on a quiet Tuesday can hit $400 the week of a major trade show.
The pool of airline seats is also unusual. Beyond the major carriers, four budget airlines treat Las Vegas as a hub or a priority city. Frontier and Spirit run year-round low-cost service, Allegiant flies nonstop from dozens of small and mid-size airports that other carriers ignore, and Southwest operates one of its largest networks out of LAS. That combination of volume and discount competition is why sub-$100 round trips are a normal occurrence, not a fluke.
What most travelers miss is that the fare itself is only part of the total. Spirit and Frontier advertise fares that exclude carry-on bags, seat selection, and even printed boarding passes. Your “$39 flight” can become $150 the moment you add a carry-on at the gate. The cheapest ticket and the cheapest total trip are often two different things, and comparing them correctly is the fastest way to overspend without noticing.
When to Book Cheap Flights to Vegas
Timing matters more than airline loyalty. For domestic Vegas routes, the sweet spot to book is roughly one to three months before departure. Flight data consistently shows that fares bottom out somewhere around 40 to 76 days out on most routes, then climb sharply in the final two weeks.
The day you book matters less than the day you fly. Searches run across multiple booking windows tend to find the lowest fares on Tuesdays, Wednesdays, and Saturdays. Sunday is almost always the most expensive day to fly, and Friday evening departures carry a premium because they overlap with weekend leisure demand in both directions.
There is also a simple pattern to the calendar. The cheapest months to fly to Las Vegas are typically January, February, early September, and the stretch from late November through mid-December, excluding the week of Thanksgiving. July and August, despite the brutal heat, stay relatively cheap because demand drops. The most expensive windows track events rather than seasons: CES in early January, the big fall conventions like SEMA and the Consumer Electronics offshoots, major boxing weekends, and New Year’s Eve all distort fares citywide.
The Cheapest Days and Times to Fly
If you only remember one rule, make it this: fly midweek, and avoid return flights on Sunday. A Tuesday-to-Wednesday or Wednesday-to-Friday trip regularly prices 30 to 50 percent below an identical Friday-to-Sunday trip on the same airline.
Time of day is the hidden lever. The first departures of the morning, usually before 8 a.m., and the last departures after 9 p.m. are consistently cheaper than midday flights. Business travelers book the 9 a.m. to 6 p.m. window, and leisure travelers book the late afternoon, so the awkward hours are where airlines quietly discount.
Length of stay also changes the math. A two-night trip is often cheaper per night than a single overnight because you dodge the Saturday-night-stay pricing that legacy carriers still apply on many routes. Southwest and the budget carriers have largely abandoned that rule, but United, Delta, and American still bake it into some fare buckets.
Which Airlines Actually Offer the Best Deals
Not every “deal” airline is a deal once you factor in the extras. Here is how the main Vegas players line up:
| Factor | Southwest | Frontier / Spirit | Allegiant |
|---|---|---|---|
| Base fare | Mid-range, predictable | Very low, teaser pricing | Low, route-dependent |
| Carry-on bag | Always included | Charged on most fares | Charged |
| Checked bag | 2 included | Charged | Charged |
| Change fees | None | None on most fares | Varies |
| Best for | Flexibility, free bags | Bare-bones solo trips | Direct small-city routes |
Southwest is the quiet value play for Vegas because two checked bags are included and changes cost nothing, which matters when hotel and party plans shift. Frontier and Spirit win only when you can travel with a personal item that fits under the seat, and Allegiant is unbeatable when it is the only airline flying nonstop from your home airport.
The majors are not out of the picture. Delta and United compete hard on Vegas because of connecting traffic, and both run fare sales several times a year that can undercut the discount carriers once you add a bag. The real skill is checking all of them in one place instead of defaulting to the airline you already have a card with.
How to Compare Vegas Fares Without the Fine Print
Comparing cheap flights to Vegas honestly means comparing totals, not teaser fares. Before you click buy, add the following to every fare you are weighing:
- A carry-on and any checked bag you know you will need
- Seat selection, if traveling with someone
- Any “booking fee” that appears only on the final screen
- Parking or rideshare at four odd hours, when cheap flights usually land
Our step-by-step approach to cheap flights price comparison walks through the same math with a real route, and it is worth five minutes if budget airlines keep surprising you at checkout.
The tools you use matter less than the habit. Set price alerts a few weeks before your window opens, search in a private window if rechecking the same route repeatedly, and always compare the airline’s own site against an aggregator. Booking direct is not always cheaper, but it is almost always easier to fix when something breaks.
Tricks Travel Pros Use to Save More
Small changes stack into real savings on Vegas trips, and most of them cost nothing but a little planning.
Book one-way fares on two different airlines. Round trips on a single carrier are often symmetric in price, but two one-ways let you pair the cheapest outbound with the cheapest return. This works especially well mixing Southwest with a budget carrier.
Check nearby airports on both ends. If you live within an hour of a second airport, compare both. Allegiant and Frontier build their schedules around secondary airports precisely because they are cheaper to serve, and those savings show up in the fare. On the Vegas side there is only one commercial airport that matters, which simplifies the math.
Cancel and rebook when the price drops. Southwest lets you rebook at the lower fare for a travel credit with no penalty, and most major carriers dropped change fees on standard economy. Set an alert, and when the price falls, grab the difference.
Use points and companion passes selectively. Vegas is a route where a Southwest Companion Pass turns one paid fare into two, and credit card travel portals frequently run Vegas-specific redemptions. The folks at The Points Guy track these offers closely, and NerdWallet keeps a running list of which airline cards currently offer the best sign-up value.
For the best overall strategy on finding genuinely low fares year-round, start with our guide to cheap flights and the best deals. And before you lock in a nonrefundable ticket, make sure you understand what a policy does and does not cover in how much is flight insurance so the money you save is not lost to a cancellation.
Frequently Asked Questions
How far in advance should I book cheap flights to vegas?
For domestic routes, aim for one to three months out, with the sharpest deals typically appearing 40 to 76 days before departure. Booking more than four months out rarely saves money, and waiting until the final two weeks almost always costs more.
What is the cheapest day to fly to Las Vegas?
Tuesdays and Wednesdays are consistently the cheapest days to fly in both directions, with Saturdays also lower than average. Sundays and Fridays are the most expensive.
Are budget airlines like Spirit and Frontier actually cheaper?
Only if you travel light. With just a personal item, they are usually the cheapest option. Add a carry-on and a checked bag and the gap against Southwest or a major-carrier sale often disappears.
Which airline has the most flights to Las Vegas?
Southwest operates one of the largest networks out of Harry Reid International, but United, Delta, American, Frontier, Spirit, and Allegiant all run significant service, which is exactly why fares stay competitive.
What is the cheapest time of year to visit Las Vegas?
January, February, early September, and the weeks between late November and mid-December tend to have the lowest airfare, as long as you avoid major conventions and the week of Thanksgiving.
The Bottom Line
Cheap flights to vegas are not a matter of luck or a secret website. They are the result of flying midweek, booking one to three months out, comparing totals instead of teaser fares, and treating Southwest, Frontier, Spirit, and Allegiant as four different tools rather than four interchangeable airlines.
Build your trip around flexible dates and a personal-item-only packing list, and you can consistently land round-trip fares in the low hundreds from the coasts and under $130 from the middle of the country. Start your search with a price alert today, compare the totals, and lock in the fare while your dates are still flexible.
