$121 Cheap Flights from Helena (HLN) to Las Vegas (LAS)

View $121 flight on Wed, Dec 3, 2025Opens in a new window

Popular airlines from Helena, MT (HLN-Helena Regional) to Harry Reid Intl. Airport (LAS)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Helena to Las Vegas (HLN-LAS)

Prices were available within the past 7 days and start at $121 for one-way flights and $214 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Jan 21 - Tue, Feb 3
HLN
Helena
LAS
Las Vegas
$214 Roundtrip, found 1 day ago
$214
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jan 21 from Helena to Las Vegas, returning Tue, Feb 3, priced at $214 found 1 day ago
Hawaiian Airlines
Tue, Jan 20 - Sat, Feb 7
HLN
Helena
LAS
Las Vegas
$221 Roundtrip, found 1 day ago
$221
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Tue, Jan 20 from Helena to Las Vegas, returning Sat, Feb 7, priced at $221 found 1 day ago
Hawaiian Airlines
Wed, Dec 3 - Sat, Dec 6
HLN
Helena
LAS
Las Vegas
$222 Roundtrip, found 6 hours ago
$222
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Wed, Dec 3 from Helena to Las Vegas, returning Sat, Dec 6, priced at $222 found 6 hours ago
Delta
Wed, Jan 21 - Thu, Feb 5
HLN
Helena
LAS
Las Vegas
$224 Roundtrip, found 1 day ago
$224
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jan 21 from Helena to Las Vegas, returning Thu, Feb 5, priced at $224 found 1 day ago
Hawaiian Airlines
Sat, Nov 8 - Wed, Nov 12
HLN
Helena
LAS
Las Vegas
$228 Roundtrip, found 2 days ago
$228
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, Nov 8 from Helena to Las Vegas, returning Wed, Nov 12, priced at $228 found 2 days ago
Hawaiian Airlines
Sun, Feb 8 - Tue, Feb 17
HLN
Helena
LAS
Las Vegas
$231 Roundtrip, found 1 day ago
$231
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sun, Feb 8 from Helena to Las Vegas, returning Tue, Feb 17, priced at $231 found 1 day ago
Hawaiian Airlines
Sat, Nov 15 - Thu, Nov 20
HLN
Helena
LAS
Las Vegas
$232 Roundtrip, found 6 hours ago
$232
Roundtrip
found 6 hours ago
Select Hawaiian Airlines flight, departing Sat, Nov 15 from Helena to Las Vegas, returning Thu, Nov 20, priced at $232 found 6 hours ago
Delta
Sat, Jan 31 - Mon, Feb 2
HLN
Helena
LAS
Las Vegas
$234 Roundtrip, found 6 hours ago
$234
Roundtrip
found 6 hours ago
Select Delta flight, departing Sat, Jan 31 from Helena to Las Vegas, returning Mon, Feb 2, priced at $234 found 6 hours ago
Alaska Airlines
Tue, Dec 9 - Wed, Dec 10
HLN
Helena
LAS
Las Vegas
$242 Roundtrip, found 14 hours ago
$242
Roundtrip
found 14 hours ago
Select Alaska Airlines flight, departing Tue, Dec 9 from Helena to Las Vegas, returning Wed, Dec 10, priced at $242 found 14 hours ago
United
Mon, Nov 24 - Thu, Nov 27
HLN
Helena
LAS
Las Vegas
$243 Roundtrip, found 3 days ago
$243
Roundtrip
found 3 days ago
Select United flight, departing Mon, Nov 24 from Helena to Las Vegas, returning Thu, Nov 27, priced at $243 found 3 days ago

Find the cheapest month to fly from Helena (HLN) to Las Vegas (LAS)

January is typically the cheapest month to fly

From $219 - $510 per traveler.

Alternative airports near Las Vegas

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to McCarran Intl. LAS. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $496
LAS
McCarran Intl.
CheapestClosest
Average driving time to city center6 min
Flights from $496

Frequently asked questions

How much does a flight from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS) cost?
Snag a cheap one-way flight from $121 or cheap return flight from $214 from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS)?
The cheapest month to fly from HLN to LAS is January, when demand is low. Off-peak months are usually when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS)?
To find the cheapest airline that'll fly you from HLN to LAS, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS)?
There aren't any daily direct flights from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from HLN to LAS?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS)?
Choose a flight from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS) last-minute?
Holding off until just before your departure to book your flight from HLN to LAS often results in higher prices. While it's possible to find some last-minute discounts, they aren't always guaranteed. Be flexible with your travel plans for the best chance of scoring a bargain.
Is it cheaper to book a HLN to LAS flight and hotel package?
Securing a HLN to LAS flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our wide range of accommodations and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS)?
You can usually cancel or reschedule your HLN to LAS flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Helena Regional
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$213
Distance
745 mi

Book with confidence

Helena to Las Vegas Flights

The cheapest times to fly from Helena to Las Vegas

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Helena to Las Vegas are during the month of January. You can find some of the cheapest flights from Helena to Las Vegas with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Helena to Las Vegas

Sunday is one of the best days to book for cheap flights from Helena to Las Vegas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Helena to Las Vegas

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Helena to Las Vegas in 2025. You can also book with separate airlines for your outbound and return journeys, from $121 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Helena to Las Vegas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Helena to Las Vegas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Helena to Las Vegas Flights

Explore a world of travel with Expedia

*Available to One Key members.