$120 Cheap Flights from Las Vegas (LAS) to Idaho Falls (IDA)

View $120 flight on Thu, Nov 13, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $120 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Bargain Flight
Sat, Nov 8 - Sun, Nov 9
LAS
Las Vegas
IDA
Idaho Falls
$238 Roundtrip, found 7 hours ago
$238
Roundtrip
found 7 hours ago
Select Bargain Flight flight, departing Sat, Nov 8 from Las Vegas to Idaho Falls, returning Sun, Nov 9, priced at $238 found 7 hours ago
Hawaiian Airlines
Mon, Nov 10 - Wed, Nov 12
LAS
Las Vegas
IDA
Idaho Falls
$240 Roundtrip, found 4 days ago
$240
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Mon, Nov 10 from Las Vegas to Idaho Falls, returning Wed, Nov 12, priced at $240 found 4 days ago
United
Wed, Sep 3 - Wed, Sep 10
LAS
Las Vegas
IDA
Idaho Falls
$241 Roundtrip, found 21 hours ago
$241
Roundtrip
found 21 hours ago
Select United flight, departing Wed, Sep 3 from Las Vegas to Idaho Falls, returning Wed, Sep 10, priced at $241 found 21 hours ago
Delta
Tue, Nov 18 - Mon, Nov 24
LAS
Las Vegas
IDA
Idaho Falls
$241 Roundtrip, found 6 hours ago
$241
Roundtrip
found 6 hours ago
Select Delta flight, departing Tue, Nov 18 from Las Vegas to Idaho Falls, returning Mon, Nov 24, priced at $241 found 6 hours ago
Alaska Airlines
Wed, Oct 15 - Sat, Oct 18
LAS
Las Vegas
IDA
Idaho Falls
$242 Roundtrip, found 7 hours ago
$242
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Wed, Oct 15 from Las Vegas to Idaho Falls, returning Sat, Oct 18, priced at $242 found 7 hours ago
Delta
Wed, Sep 3 - Wed, Sep 10
LAS
Las Vegas
IDA
Idaho Falls
$244 Roundtrip, found 21 hours ago
$244
Roundtrip
found 21 hours ago
Select Delta flight, departing Wed, Sep 3 from Las Vegas to Idaho Falls, returning Wed, Sep 10, priced at $244 found 21 hours ago
Delta
Thu, Oct 16 - Sat, Oct 18
LAS
Las Vegas
IDA
Idaho Falls
$253 Roundtrip, found 14 hours ago
$253
Roundtrip
found 14 hours ago
Select Delta flight, departing Thu, Oct 16 from Las Vegas to Idaho Falls, returning Sat, Oct 18, priced at $253 found 14 hours ago
United
Wed, Sep 3 - Wed, Sep 10
LAS
Las Vegas
IDA
Idaho Falls
$260 Roundtrip, found 21 hours ago
$260
Roundtrip
found 21 hours ago
Select United flight, departing Wed, Sep 3 from Las Vegas to Idaho Falls, returning Wed, Sep 10, priced at $260 found 21 hours ago
United
Wed, Sep 3 - Wed, Sep 10
LAS
Las Vegas
IDA
Idaho Falls
$262 Roundtrip, found 21 hours ago
$262
Roundtrip
found 21 hours ago
Select United flight, departing Wed, Sep 3 from Las Vegas to Idaho Falls, returning Wed, Sep 10, priced at $262 found 21 hours ago
United
Fri, Nov 21 - Mon, Nov 24
LAS
Las Vegas
IDA
Idaho Falls
$264 Roundtrip, found 6 hours ago
$264
Roundtrip
found 6 hours ago
Select United flight, departing Fri, Nov 21 from Las Vegas to Idaho Falls, returning Mon, Nov 24, priced at $264 found 6 hours 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 - $647 per traveler.

Graph displaying average flight prices per month

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 $301
IDA
Idaho Falls Regional
CheapestClosest
Average driving time to city center5 min
Flights from $301
Flights from Las Vegas (LAS) to Idaho Falls (IDA)
Origin airport
Harry Reid Intl.
Destination airport
Idaho Falls Regional
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$238
Distance
538 mi
Average flight time
1 hour 46 mins

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 November. 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 $120 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.

 

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 $120 or cheap return flight from $238 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)?
November 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.

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*Available to One Key members.