$127 Cheap Flights from Idaho Falls (IDA) to Las Vegas (LAS)

View $127 flight on Sat, Jan 10, 2026Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS)

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Cheap Flights from Idaho Falls to Las Vegas (IDA-LAS)

Prices were available within the past 7 days and start at $127 for one-way flights and $243 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Sat, Jan 10 - Wed, Jan 14
IDA
Idaho Falls
LAS
Las Vegas
$243 Roundtrip, found 9 hours ago
$243
Roundtrip
found 9 hours ago
Select Hawaiian Airlines flight, departing Sat, Jan 10 from Idaho Falls to Las Vegas, returning Wed, Jan 14, priced at $243 found 9 hours ago
Delta
Tue, Feb 24 - Tue, Mar 10
IDA
Idaho Falls
LAS
Las Vegas
$244 Roundtrip, found 3 days ago
$244
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Feb 24 from Idaho Falls to Las Vegas, returning Tue, Mar 10, priced at $244 found 3 days ago
Hawaiian Airlines
Tue, Jan 13 - Sat, Jan 17
IDA
Idaho Falls
LAS
Las Vegas
$251 Roundtrip, found 9 hours ago
$251
Roundtrip
found 9 hours ago
Select Hawaiian Airlines flight, departing Tue, Jan 13 from Idaho Falls to Las Vegas, returning Sat, Jan 17, priced at $251 found 9 hours ago
Delta
Sat, Feb 21 - Wed, Feb 25
IDA
Idaho Falls
LAS
Las Vegas
$252 Roundtrip, found 7 hours ago
$252
Roundtrip
found 7 hours ago
Select Delta flight, departing Sat, Feb 21 from Idaho Falls to Las Vegas, returning Wed, Feb 25, priced at $252 found 7 hours ago
Alaska Airlines
Tue, Jan 13 - Tue, Jan 13
IDA
Idaho Falls
LAS
Las Vegas
$255 Roundtrip, found 9 hours ago
$255
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Tue, Jan 13 from Idaho Falls to Las Vegas, returning Tue, Jan 13, priced at $255 found 9 hours ago
Alaska Airlines
Wed, Jan 21 - Wed, Jan 28
IDA
Idaho Falls
LAS
Las Vegas
$260 Roundtrip, found 5 hours ago
$260
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Wed, Jan 21 from Idaho Falls to Las Vegas, returning Wed, Jan 28, priced at $260 found 5 hours ago
United
Tue, Nov 25 - Wed, Nov 26
IDA
Idaho Falls
LAS
Las Vegas
$261 Roundtrip, found 16 hours ago
$261
Roundtrip
found 16 hours ago
Select United flight, departing Tue, Nov 25 from Idaho Falls to Las Vegas, returning Wed, Nov 26, priced at $261 found 16 hours ago
American Airlines
Wed, Jan 21 - Wed, Jan 28
IDA
Idaho Falls
LAS
Las Vegas
$261 Roundtrip, found 5 hours ago
$261
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Wed, Jan 21 from Idaho Falls to Las Vegas, returning Wed, Jan 28, priced at $261 found 5 hours ago
Hawaiian Airlines
Sat, Dec 6 - Wed, Dec 10
IDA
Idaho Falls
LAS
Las Vegas
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Dec 6 from Idaho Falls to Las Vegas, returning Wed, Dec 10, priced at $261 found 1 day ago
Delta
Thu, Jan 22 - Thu, Feb 5
IDA
Idaho Falls
LAS
Las Vegas
$262 Roundtrip, found 3 days ago
$262
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Jan 22 from Idaho Falls to Las Vegas, returning Thu, Feb 5, priced at $262 found 3 days ago

Find the cheapest month to fly from Idaho Falls (IDA) to Las Vegas (LAS)

January is typically the cheapest month to fly

From $219 - $552 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 $301
LAS
McCarran Intl.
CheapestClosest
Average driving time to city center6 min
Flights from $301

Frequently asked questions

How much does a flight from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS) cost?
Lock in a cheap one-way flight from $127 or cheap return flight from $243 from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS)?
January is the least expensive month to fly from IDA to LAS. Planning your trip for the off-season is often the key to better flight prices.
What is the cheapest airline that flies from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from IDA to LAS. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS)?
On average, you can take your pick of 2 nonstop flights departing from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS) weekly. If you can't find one that suits your schedule, think about booking a flight that includes a layover. Customize your search results on Expedia to include one or two stops and opt for the next best alternative.
What are the most popular departure times for flights from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS)?
The 6 PM departures from IDA to LAS see the highest demand. They can also be more expensive. If you want to save on your trip, pick a less crowded time to fly.
What day of the week has the most flights from IDA to LAS?
Depart on a Friday if you're looking for the biggest selection of flights from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS).
What is the earliest flight from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS)?
Idaho Falls Regional Airport (IDA)'s earliest flight to Harry Reid Intl. Airport (LAS) is at approximately 6:32PM UTC-7. With a flight time of 1h 52m, you'll touch down at around 7:24PM UTC-8.
How long does it take to fly from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS)?
Flights from IDA to LAS have an average travel time of 1 hour and 52 minutes. The distance between the two is 540 mi.
What is the best time to fly from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS)?
To touch down at Harry Reid Intl. Airport (LAS) without delays, book a flight that takes off from Idaho Falls Regional Airport (IDA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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.
What airports do you fly into for Las Vegas from Idaho Falls Regional Airport (IDA)?
Harry Reid Intl. Airport (LAS) is the only airport in Las Vegas with direct flights from Idaho Falls Regional Airport (IDA). Check out the options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS) last-minute?
Booking your flight from IDA to LAS shortly before your journey is typically more expensive. But if there's some wiggle room with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book an IDA to LAS flight and hotel package?
Booking an IDA to LAS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our wide range of hotels and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to Harry Reid Intl. Airport (LAS)?
Generally, it's possible to cancel or reschedule your IDA to LAS flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Idaho Falls Regional
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$242
Distance
538 mi
Average flight time
1 hour 43 mins

Book with confidence

Idaho Falls to Las Vegas Flights

The cheapest times to fly from Idaho Falls 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 Idaho Falls to Las Vegas are during the month of January. You can find some of the cheapest flights from Idaho Falls to Las Vegas with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Idaho Falls to Las Vegas

Sunday is one of the best days to book for cheap flights from Idaho Falls 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 Idaho Falls 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 Idaho Falls to Las Vegas in 2025. You can also book with separate airlines for your outbound and return journeys, from $127 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 Idaho Falls 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 Idaho Falls 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.

 

Idaho Falls to Las Vegas Flights

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