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

View $127 flight on Fri, Jan 23, 2026Opens in a new window

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

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

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
Wed, Jan 7 - Sat, Jan 10
LAS
Las Vegas
IDA
Idaho Falls
$243 Roundtrip, found 4 days ago
$243
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Wed, Jan 7 from Las Vegas to Idaho Falls, returning Sat, Jan 10, priced at $243 found 4 days ago
Delta
Wed, Feb 25 - Sat, Feb 28
LAS
Las Vegas
IDA
Idaho Falls
$252 Roundtrip, found 2 days ago
$252
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Feb 25 from Las Vegas to Idaho Falls, returning Sat, Feb 28, priced at $252 found 2 days ago
Alaska Airlines
Thu, Jan 8 - Tue, Jan 13
LAS
Las Vegas
IDA
Idaho Falls
$260 Roundtrip, found 8 hours ago
$260
Roundtrip
found 8 hours ago
Select Alaska Airlines flight, departing Thu, Jan 8 from Las Vegas to Idaho Falls, returning Tue, Jan 13, priced at $260 found 8 hours ago
United
Wed, Jan 21 - Thu, Jan 22
LAS
Las Vegas
IDA
Idaho Falls
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select United flight, departing Wed, Jan 21 from Las Vegas to Idaho Falls, returning Thu, Jan 22, priced at $261 found 1 day ago
American Airlines
Wed, Apr 22 - Sat, Apr 25
LAS
Las Vegas
IDA
Idaho Falls
$261 Roundtrip, found 1 day ago
$261
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Apr 22 from Las Vegas to Idaho Falls, returning Sat, Apr 25, priced at $261 found 1 day ago
Hawaiian Airlines
Wed, Mar 4 - Tue, Mar 17
LAS
Las Vegas
IDA
Idaho Falls
$261 Roundtrip, found 5 days ago
$261
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Wed, Mar 4 from Las Vegas to Idaho Falls, returning Tue, Mar 17, priced at $261 found 5 days ago
Hawaiian Airlines
Sat, Feb 21 - Tue, Feb 24
LAS
Las Vegas
IDA
Idaho Falls
$262 Roundtrip, found 2 days ago
$262
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, Feb 21 from Las Vegas to Idaho Falls, returning Tue, Feb 24, priced at $262 found 2 days ago
Alaska Airlines
Fri, Nov 21 - Mon, Nov 24
LAS
Las Vegas
IDA
Idaho Falls
$265 Roundtrip, found 3 days ago
$265
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Nov 21 from Las Vegas to Idaho Falls, returning Mon, Nov 24, priced at $265 found 3 days ago
Alaska Airlines
Wed, Jan 21 - Thu, Jan 22
LAS
Las Vegas
IDA
Idaho Falls
$266 Roundtrip, found 1 day ago
$266
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Jan 21 from Las Vegas to Idaho Falls, returning Thu, Jan 22, priced at $266 found 1 day ago
Delta
Tue, Mar 10 - Sat, Mar 28
LAS
Las Vegas
IDA
Idaho Falls
$267 Roundtrip, found 5 days ago
$267
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Mar 10 from Las Vegas to Idaho Falls, returning Sat, Mar 28, priced at $267 found 5 days ago

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

January is typically the cheapest month to fly

From $219 - $652 per traveler.

Alternative airports near Idaho Falls

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

Select flight to Idaho Falls Regional IDA. Cheapest and Closest option available. Average driving time to city center is 5 minutes. Flights from $341
IDA
Idaho Falls Regional
CheapestClosest
Average driving time to city center5 min
Flights from $341

Frequently asked questions

How much does a flight from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA) cost?
Lock in a cheap one-way flight from $127 or cheap return flight from $243 from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA)?
January is the cheapest month to fly from LAS to IDA. Timing your trip outside of the busy season is often the key to better flight prices.
What is the cheapest airline that flies from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest LAS to IDA flight.
How many flights per day from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA)?
On average, Harry Reid Intl. Airport (LAS) has 2 direct flights to Idaho Falls Regional Airport (IDA) every week. If you want more options, take advantage of Expedia's filter tool to look for flights with layovers. Squeeze in a quick visit to another destination or simply break up your trip.
What are the most popular departure times for flights from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA)?
Flights between LAS and IDA tend to be busiest at 8 AM. For a more relaxed experience and potentially cheaper fares, look for a time outside the usual busy windows.
What day of the week has the most flights from LAS to IDA?
If you fly on a Monday, you'll get the biggest range of choices for flights from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA).
What is the earliest flight from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA)?
Hop on the earliest flight at around 8:30AM UTC-8, departing from Harry Reid Intl. Airport (LAS). You'll be in the air for around 1h 59m, touching down at Idaho Falls Regional Airport (IDA) at approximately 11:29AM UTC-7.
How long does it take to fly from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA)?
It takes approximately 1 hour and 59 minutes to travel the 540 mi from LAS to IDA.
What is the best time to fly from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA)?
Opt for a flight from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this hour 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.
What airports do you fly into for Idaho Falls from Harry Reid Intl. Airport (LAS)?
Idaho Falls Regional Airport (IDA) is the only airport in Idaho Falls with direct flights from Harry Reid Intl. Airport (LAS). Check out your options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA) last-minute?
Holding off until just before your trip to book your flight from LAS to IDA generally means paying more. While it's possible to find some last-minute offers, there's no guarantee. Be flexible with your travel plans for the best chance of getting a bargain.
Is it cheaper to book a LAS to IDA flight and hotel package?
Compared with arranging flights and hotels separately, booking a LAS to IDA flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place takes the hassle out of planning your trip. Simply secure your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA)?
In most cases, you can reschedule or cancel your LAS to IDA flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further details, visit our Customer Service portal.

Travel information

Origin airport
Harry Reid Intl.
Destination airport
Idaho Falls Regional
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$242
Distance
538 mi
Average flight time
2 hours 47 mins

Book with confidence

Las Vegas to Idaho Falls Flights

The cheapest times to fly from Las Vegas to Idaho Falls

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

 

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

Sunday is one of the best days to book for cheap flights from Las Vegas to Idaho Falls: 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 Las Vegas to Idaho Falls

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 Las Vegas to Idaho Falls 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 Las Vegas to Idaho Falls 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 Las Vegas to Idaho Falls 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.

 

Las Vegas to Idaho Falls Flights

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*Available to One Key members.