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Idaho Falls

$54+ Cheap flights from Las Vegas to Idaho Falls (LAS - IDA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — IDA
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Las Vegas to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Las Vegas (LAS) to Idaho Falls (IDA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$96
(Cheapflightsfares)

One-way from

$54
(Cheapflightsfares)

Popular in

December

Cheapest in

May

Average price

$112
Provider with most accurate pricing for Las Vegas Harry Reid Intl-Idaho Falls Fanning Field flight deals.
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Provider most trusted by Cheapflights users for Las Vegas Harry Reid Intl-Idaho Falls Fanning Field flights.
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From Las Vegas Harry Reid Intl to Idaho Falls Fanning Field
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One-way flight from Las Vegas Harry Reid Intl to Idaho Falls Fanning Field
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Highest demand for flights based on searches. 11% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Las Vegas to Idaho Falls

Cheapest flights from Las Vegas to Idaho Falls
Explore the most affordable flight options available from Las Vegas to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/283:21 pmLAS - IDA
Nonstop1h 46mAllegiant Air
Mon 12/17:58 pmIDA - LAS
Nonstop1h 45mAllegiant Air
Deal found 10/25$96
This Cheapflightsfares deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:27 amLAS - IDA
Nonstop1h 49mAllegiant Air
Sun 12/74:39 pmIDA - LAS
Nonstop1h 45mAllegiant Air
Deal found 10/28$101
This Booking.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2112:09 pmLAS - IDA
Nonstop1h 46mAllegiant Air
Sun 11/3010:53 pmIDA - LAS
Nonstop1h 45mAllegiant Air
Deal found 10/25$111
This Booking.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:22 pmLAS - IDA
Nonstop1h 46mAllegiant Air
Mon 11/177:56 pmIDA - LAS
Nonstop1h 43mAllegiant Air
Deal found 10/26$123
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/261:17 pmLAS - IDA
Nonstop1h 46mAllegiant Air
Fri 11/286:57 pmIDA - LAS
Nonstop1h 45mAllegiant Air
Deal found 10/27$126
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/261:17 pmLAS - IDA
Nonstop1h 46mAllegiant Air
Wed 12/312:19 pmIDA - LAS
Nonstop1h 45mAllegiant Air
Deal found 10/25$127
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/261:17 pmLAS - IDA
Nonstop1h 46mAllegiant Air
Sun 11/3010:53 pmIDA - LAS
Nonstop1h 45mAllegiant Air
Deal found 10/25$129
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/283:21 pmLAS - IDA
Nonstop1h 46mAllegiant Air
Sun 11/3010:53 pmIDA - LAS
Nonstop1h 45mAllegiant Air
Deal found 10/25$132
This Cheapflightsfares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/311:12 amLAS - IDA
Nonstop1h 49mAllegiant Air
Fri 11/710:56 pmIDA - LAS
Nonstop1h 42mAllegiant Air
Deal found 10/27$134
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/261:17 pmLAS - IDA
Nonstop1h 46mAllegiant Air
Thu 12/44:39 pmIDA - LAS
Nonstop1h 45mAllegiant Air
Deal found 10/25$148
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/283:21 pmLAS - IDA
Nonstop1h 46mAllegiant Air
Thu 12/44:39 pmIDA - LAS
Nonstop1h 45mAllegiant Air
Deal found 10/25$152

Cheapflights Fare Finder

 
Customize your flight search to find flights from Las Vegas to Idaho Falls that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Las Vegas to Idaho Falls that are best for you.

Fly from

Las Vegas

Fly to

Idaho Falls

Route

Depart

Return

Price

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 11/14

1:22 pm-4:08 pm

Nonstop1h 46m

Idaho Falls Fanning Field

Mon 11/17

7:56 pm-8:39 pm

Nonstop1h 43m

$123

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Mon 11/3

11:12 am-2:01 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Fri 11/7

10:56 pm-11:38 pm

Nonstop1h 42m

$134

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 11/14

11:22 am-10:06 pm

1 stop9h 44m

Idaho Falls Fanning Field

Mon 11/17

7:56 pm-8:39 pm

Nonstop1h 43m

$169

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Wed 11/26

1:31 pm-10:01 pm

1 stop7h 30m

Idaho Falls Fanning Field

Mon 12/1

7:58 pm-8:43 pm

Nonstop1h 45m

$193

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Thu 11/13

7:50 pm-10:06 pm

1 stop25h 16m

Idaho Falls Fanning Field

Fri 11/21

9:43 pm-10:28 pm

Nonstop1h 45m

$221

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Thu 11/27

10:22 am-4:32 pm

1 stop5h 10m

Idaho Falls Fanning Field

Wed 12/3

7:06 pm-11:29 pm

1 stop5h 23m

$281

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 12/5

7:00 am-4:27 pm

1 stop8h 27m

Idaho Falls Fanning Field

Mon 12/8

5:07 pm-11:46 am

2 stops19h 39m

$298

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 12/12

10:27 am-1:16 pm

Nonstop1h 49m

$54

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Sat 12/13

9:10 am-11:59 am

Nonstop1h 49m

$66

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 11/7

1:22 pm-4:08 pm

Nonstop1h 46m

$85

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 17 results
1
2

Compare providers for flights from Las Vegas to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Las Vegas to Idaho Falls in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Las Vegas-Idaho Falls flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Las Vegas-Idaho Falls flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Las Vegas-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Las Vegas-Idaho Falls flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Las Vegas-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Las Vegas to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Las Vegas with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Las Vegas to Idaho Falls

What is the cheapest month to book a flight from Las Vegas to Idaho Falls?

Currently, September is the cheapest month in which you can book a flight from Las Vegas to Idaho Falls (average of $52). Flying from Las Vegas to Idaho Falls in December is currently the most expensive (average of $206). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LAS to IDA?

Find hourly flight availability from Las Vegas to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

It’s optimal to fly from Las Vegas to Idaho Falls at noon. By choosing this option you can save up to 76% on the cost of your flight, compared to a flight in the afternoon.

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Idaho Falls. Reviews last updated October 29, 2025.
Read through reviews of airlines operating flights from Las Vegas to Idaho Falls, such as Delta and Allegiant Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,993 reviews

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,993 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Allegiant Air
7.2
Good
695 reviews
Delta
7.9
Good
7,993 reviews

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Las Vegas to Idaho Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Las Vegas to Idaho Falls?

    For as low as $123, Allegiant Air can have you in Idaho Falls from Las Vegas in 1h 46m. Las Vegas and Idaho Falls are separated by a distance of 538 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from Las Vegas to Idaho Falls round-trip?

    According to our current data, Allegiant Air ($75), and Delta ($149) offers the cheapest pricing from Las Vegas to Idaho Falls. Users have found that Allegiant Air is 53% cheaper than the other options available to this destination.

  • Can I find deals for flights from Las Vegas to Idaho Falls that include hotel bookings?

    Yes. In addition to deals on Las Vegas to Idaho Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Las Vegas to Idaho Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Las Vegas to Idaho Falls.

  • Can I find deals for business class flights from Las Vegas to Idaho Falls?

    Yes. Cheapflights offers flight deals from Las Vegas to Idaho Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Las Vegas to Idaho Falls?

    Currently, September is the cheapest month in which you can book a flight from Las Vegas to Idaho Falls (average of $52). Flying from Las Vegas to Idaho Falls in December is currently the most expensive (average of $206). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Top 2 airlines flying from Las Vegas to Idaho Falls

Discover the top 2 airlines that operate flights from Las Vegas to Idaho Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$75Average$124FlexibilityNo cancel feeOn-time88%
DeltaCheapest$149Average$307FlexibilityNo cancel feeOn-timeN/A

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