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Idaho Falls

$62+ 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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
LAS — IDA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$92
(Cheapflightsfares)

One-way from

$62
(Cheapflightsfares)

Popular in

December

Cheapest in

May

Average price

$139

Good round-trip deal

$105 or less

Good one-way deal

$58 or less
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. 15% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Las Vegas Harry Reid Intl to Idaho Falls Fanning Field.
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Price to beat on a one-way flight from Las Vegas Harry Reid Intl to Idaho Falls Fanning Field.
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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 September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 10/31:25 pmLAS - IDA
Nonstop1h 49mAllegiant Air
Mon 10/67:40 pmIDA - LAS
Nonstop1h 43mAllegiant Air
Deal found 9/10$92
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 9/1512:00 pmLAS - IDA
Nonstop1h 49mAllegiant Air
Mon 9/229:39 pmIDA - LAS
Nonstop1h 44mAllegiant Air
Deal found 9/11$120
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/2010:00 amLAS - IDA
Nonstop1h 49mAllegiant Air
Mon 10/207:40 pmIDA - LAS
Nonstop1h 43mAllegiant Air
Deal found 9/9$125
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/101:25 pmLAS - IDA
Nonstop1h 49mAllegiant Air
Mon 10/137:40 pmIDA - LAS
Nonstop1h 43mAllegiant Air
Deal found 9/10$141
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 9/121:16 pmLAS - IDA
Nonstop1h 49mAllegiant Air
Mon 9/159:39 pmIDA - LAS
Nonstop1h 44mAllegiant Air
Deal found 9/9$154
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/10$161
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/311:25 pmLAS - IDA
Nonstop1h 49mMultiple Airlines
Mon 11/32:51 pmIDA - LAS
1 stop18h 06mMultiple Airlines
Deal found 9/10$193
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/31:25 pmLAS - IDA
Nonstop1h 49mMultiple Airlines
Mon 10/61:39 pmIDA - LAS
1 stop19h 18mMultiple Airlines
Deal found 9/10$198
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Thu 9/258:50 pmLAS - IDA
1 stop24h 15mMultiple Airlines
Mon 9/299:39 pmIDA - LAS
Nonstop1h 44mMultiple Airlines
Deal found 9/10$215
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/101:25 pmLAS - IDA
Nonstop1h 49mMultiple Airlines
Mon 10/131:39 pmIDA - LAS
1 stop19h 18mMultiple Airlines
Deal found 9/10$219

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 September 11, 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

Mon 9/15

12:00 pm-2:49 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 9/22

9:39 pm-10:23 pm

Nonstop1h 44m

$120

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Mon 10/20

10:00 am-12:49 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 10/20

7:40 pm-8:23 pm

Nonstop1h 43m

$125

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Wed 11/26

1:17 pm-4:03 pm

Nonstop1h 46m

Idaho Falls Fanning Field

Sun 11/30

10:53 pm-11:38 pm

Nonstop1h 45m

$161

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 10/31

1:25 pm-4:14 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 11/3

2:51 pm-7:57 am

1 stop18h 06m

$193

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 10/3

1:25 pm-4:14 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 10/6

1:39 pm-7:57 am

1 stop19h 18m

$198

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 10/10

1:25 pm-4:14 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 10/13

1:39 pm-7:57 am

1 stop19h 18m

$219

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Sat 10/11

7:00 am-3:38 pm

1 stop7h 38m

Idaho Falls Fanning Field

Wed 10/15

4:15 pm-8:37 pm

1 stop5h 22m

$260

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Sat 10/11

7:45 am-1:33 pm

1 stop4h 48m

Idaho Falls Fanning Field

Sun 10/12

5:56 pm-9:57 pm

1 stop5h 01m

$261

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Wed 11/19

3:36 pm-10:52 pm

1 stop6h 16m

Idaho Falls Fanning Field

Fri 11/21

7:00 am-12:33 pm

1 stop6h 33m

$261

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Wed 11/19

8:06 pm-3:57 pm

1 stop18h 51m

Idaho Falls Fanning Field

Fri 11/21

9:43 pm-10:28 pm

Nonstop1h 45m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 19 results
1
2

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, October is the cheapest month in which you can book a flight from Las Vegas to Idaho Falls (average of $380). Flying from Las Vegas to Idaho Falls in December is currently the most expensive (average of $578). 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 September 11, 2025.

It’s optimal to fly from Las Vegas to Idaho Falls at noon. By choosing this option you can save up to 77% 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 September 11, 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
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
702 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $120, Allegiant Air can have you in Idaho Falls from Las Vegas in 1h 49m. 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 ($85), and Delta ($149) offers the cheapest pricing from Las Vegas to Idaho Falls. Users have found that Allegiant Air is 49% cheaper than the other options available to this destination.

  • What are the cheapest flights from Las Vegas to Idaho Falls?

    On average you can expect to pay $96 for a flight from Las Vegas to Idaho Falls. The cheapest flight overall is $52 while the most popular route, (Las Vegas Harry Reid Intl - Idaho Falls Fanning Field) is currently priced at $92.

  • 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, October is the cheapest month in which you can book a flight from Las Vegas to Idaho Falls (average of $380). Flying from Las Vegas to Idaho Falls in December is currently the most expensive (average of $578). 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$85Average$125FlexibilityNo cancel feeOn-time88%
DeltaCheapest$149Average$310FlexibilityNo cancel feeOn-timeN/A

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