HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Las Vegas

$66+ Cheap flights from Idaho Falls to Las Vegas (IDA - LAS)

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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — LAS
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho Falls to Las Vegas with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl are usually found in July or August, booked 73 days in advance, depart on a Monday or Sunday and return on a Wednesday

Cheap flight deals from Idaho Falls to Las Vegas

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Las Vegas (LAS). 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$96
(Cheapflightsfares)

One-way from

$66
(Cheapflightsfares)

Popular in

December

Cheapest in

July

Average price

$211

Good round-trip deal

$122 or less
Provider with most accurate pricing for Idaho Falls Fanning Field-Las Vegas Harry Reid Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Las Vegas Harry Reid Intl flights.
Search Deals
From Idaho Falls Fanning Field to Las Vegas Harry Reid Intl
Search Deals
One-way flight from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals
Price to beat on a round-trip flight from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl.
Search Deals

Find flight deals from Idaho Falls to Las Vegas

Cheapest flights from Idaho Falls to Las Vegas
Explore the most affordable flight options available from Idaho Falls to Las Vegas. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/18. 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 3/39:32 pmIDA - LAS
Nonstop1h 47mAllegiant Air
Fri 3/1411:49 amLAS - IDA
Nonstop1h 49mAllegiant Air
Deal found 2/18$96
This Hawaiian Airlines deal was found by Cheapflights users on 2/19. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/154:07 pmIDA - LAS
1 stop7h 38mHawaiian Airlines
Tue 3/187:50 amLAS - IDA
1 stop6h 40mHawaiian Airlines
Deal found 2/19$276
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/166:55 pmIDA - LAS
1 stop5h 48mDelta
Tue 4/16:00 amLAS - IDA
1 stop5h 18mDelta
Deal found 2/19$277
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/154:07 pmIDA - LAS
1 stop7h 38mAlaska Airlines
Tue 3/184:16 pmLAS - IDA
2 stops22h 18mAlaska Airlines
Deal found 2/19$295
This United Airlines deal was found by Cheapflights users on 2/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/195:48 pmIDA - LAS
1 stop5h 14mUnited Airlines
Wed 3/266:00 amLAS - IDA
1 stop6h 27mUnited Airlines
Deal found 2/19$336
This American Airlines deal was found by Cheapflights users on 2/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/167:47 amIDA - LAS
2 stops11h 58mAmerican Airlines
Tue 4/14:49 pmLAS - IDA
1 stop4h 23mAmerican Airlines
Deal found 2/19$342
This United deal was found by Cheapflights users on 2/18. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/3010:50 amIDA - LAS
2 stops8h 16mMultiple Airlines
Fri 4/412:02 pmLAS - IDA
2 stops9h 33mMultiple Airlines
Deal found 2/18$661

Find flights from Idaho Falls to Las Vegas within your budget

Customize your flight search to find flights from Idaho Falls to Las Vegas 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 February 20, 2025.

Fly from

Idaho Falls

Fly to

Las Vegas

Route

Depart

Return

Price

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 3/3

9:32 pm-10:19 pm

Nonstop1h 47m

Las Vegas Harry Reid Intl

Fri 3/14

11:49 am-2:38 pm

Nonstop1h 49m

$96

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sat 3/15

4:07 pm-10:45 pm

1 stop7h 38m

Las Vegas Harry Reid Intl

Tue 3/18

7:50 am-3:30 pm

1 stop6h 40m

$276

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sun 3/16

6:55 pm-11:43 pm

1 stop5h 48m

Las Vegas Harry Reid Intl

Tue 4/1

6:00 am-12:18 pm

1 stop5h 18m

$277

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sat 3/15

4:07 pm-10:45 pm

1 stop7h 38m

Las Vegas Harry Reid Intl

Tue 3/18

4:16 pm-3:34 pm

2 stops22h 18m

$295

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Wed 3/19

5:48 pm-10:02 pm

1 stop5h 14m

Las Vegas Harry Reid Intl

Wed 3/26

6:00 am-1:27 pm

1 stop6h 27m

$336

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sun 3/16

7:47 am-6:45 pm

2 stops11h 58m

Las Vegas Harry Reid Intl

Tue 4/1

4:49 pm-10:12 pm

1 stop4h 23m

$342

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sun 3/30

10:50 am-6:06 pm

2 stops8h 16m

Las Vegas Harry Reid Intl

Fri 4/4

12:02 pm-10:35 pm

2 stops9h 33m

$661

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Fri 3/7

9:37 pm-10:25 pm

Nonstop1h 48m

$66

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Fri 5/2

6:55 pm-11:25 pm

1 stop5h 30m

$139

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Thu 7/17

4:15 pm-10:00 pm

1 stop6h 45m

$150

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 13 results
1
2

Compare providers for flights from Idaho Falls to Las Vegas

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 Idaho Falls to Las Vegas in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 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 Idaho Falls-Las Vegas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Las Vegas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Las Vegas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Idaho Falls-Las Vegas flights, Cheapflights users trust FlightHub the most. FlightHub 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 Idaho Falls-Las Vegas 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 Idaho Falls to Las Vegas

Have a flexible travel schedule? Discover the best time to fly to Las Vegas from Idaho Falls 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.

Travel insights for flights from Idaho Falls to Las Vegas

Get recent, data-driven insights about flights from Idaho Falls to Las Vegas including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Idaho Falls to Las Vegas?

Use this chart to determine the optimal time to book a round-trip flight from Idaho Falls to Las Vegas. Price data was last updated on February 14, 2025.

The best time to book flights from Idaho Falls to Las Vegas is 73 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Las Vegas (average of $198). Flying from Idaho Falls to Las Vegas in March is currently the most expensive (average of $269). 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 IDA to LAS?

Find hourly flight availability from Idaho Falls to Las Vegas. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

A simple way to save on the total cost of your ticket is to fly from Idaho Falls to Las Vegas at noon. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Idaho Falls to Las Vegas?

Use this chart to determine the cheapest time to fly round-trip from Idaho Falls to Las Vegas. Price data was last updated on January 26, 2025.

Travelers seeking maximum savings on their Idaho Falls to Las Vegas flight should consider departing on Monday afternoons when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Las Vegas ranges from 0.1 - 0.8 inches per month. February is typically the wettest month, when rainfall can reach 0.8 in. May is typically the driest time to visit Las Vegas when rainfall is around 0.1 in.

Temperature in Las Vegas by month

Plan your trip to Las Vegas by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Las Vegas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 93.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Las Vegas

Get insights into the airlines that provide service to Las Vegas. 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 Las Vegas. Reviews last updated February 20, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Idaho Falls to Las Vegas to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,691 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,691 reviews
Alaska Airlines
8.0
Very good
9,691 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,227 reviews
Alaska Airlines
8.0
Very good
9,691 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines
7.9
Good
2,317 reviews
Alaska Airlines
8.0
Very good
9,691 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,771 reviews
Alaska Airlines
8.0
Very good
9,691 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Allegiant Air
7.3
Good
767 reviews
Alaska Airlines
8.0
Very good
9,691 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

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

  • How popular is this Idaho Falls to Las Vegas flight route?

    This flight path from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl was viewed by 5 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Allegiant Air, at $96, was found to be the cheapest airline from Idaho Falls to Las Vegas.Alternate airlines to your destination round-trip include Hawaiian Airlines and Delta. Allegiant Air is currently priced 52% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Idaho Falls to Las Vegas one-way?

    The cheapest airline one-way is Allegiant Air, with whom users have recently found tickets for as low as $66. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from Idaho Falls to Las Vegas for a low price.

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

    While on average a flight from Idaho Falls to Las Vegas is generally $176, our data shows the cheapest flight currently is $88. When looking at the most popular route, (Idaho Falls Fanning Field - Las Vegas Harry Reid Intl), you can expect to pay $96 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho Falls to Las Vegas 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 Idaho Falls to Las Vegas?

    Currently, August is the cheapest month in which you can book a flight from Idaho Falls to Las Vegas (average of $198). Flying from Idaho Falls to Las Vegas in March is currently the most expensive (average of $269). 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
Henderson
Paradise
Sunrise Manor
North Las Vegas
Winchester
Kingman
Primm
Mesquite
Needles
Mount Charleston
Pahrump
Boulder City

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Idaho Falls to Las Vegas

Discover the top 4 airlines that operate flights from Idaho Falls to Las Vegas. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$88Average$157FlexibilityNo cancel feeOn-time88%
DeltaCheapest$221Average$463FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$267Average$580FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$284Average$752FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.