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$86+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — LAS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Find cheap flights from Idaho Falls to Las Vegas with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl are usually found in June or August, booked 26 days in advance, depart on a Monday or Thursday and return on a Tuesday

Cheap 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 January 29, 2026.

This Booking.com deal was found by Cheapflights users on 1/26. 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.
Mon 2/2310:31 pm
IDA
-
LAS
Nonstop1h 48m
Allegiant Air
Mon 3/912:45 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 1/26$117
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:21 pm
IDA
-
LAS
Nonstop1h 41m
Allegiant Air
Fri 5/112:42 pm
LAS
-
IDA
Nonstop1h 45m
Allegiant Air
Deal found 1/27$126
This Booking.com deal was found by Cheapflights users on 1/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/29:20 pm
IDA
-
LAS
Nonstop1h 47m
Allegiant Air
Fri 2/611:23 am
LAS
-
IDA
Nonstop1h 56m
Allegiant Air
Deal found 1/27$129
This Booking.com deal was found by Cheapflights users on 1/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2710:29 pm
IDA
-
LAS
Nonstop1h 48m
Allegiant Air
Mon 3/212:45 pm
LAS
-
IDA
Nonstop1h 45m
Allegiant Air
Deal found 1/28$134
This Gotogate deal was found by Cheapflights users on 1/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/510:56 pm
IDA
-
LAS
Nonstop1h 43m
Allegiant Air
Mon 6/81:22 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 1/28$139
This Gotogate deal was found by Cheapflights users on 1/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/610:30 pm
IDA
-
LAS
Nonstop1h 46m
Allegiant Air
Fri 3/1312:28 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 1/27$149
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/610:30 pm
IDA
-
LAS
Nonstop1h 46m
Allegiant Air
Mon 3/912:45 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 1/28$150
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1610:13 pm
IDA
-
LAS
Nonstop1h 46m
Allegiant Air
Fri 3/2012:28 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 1/28$157
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2710:13 pm
IDA
-
LAS
Nonstop1h 46m
Allegiant Air
Mon 3/3012:28 pm
LAS
-
IDA
Nonstop1h 46m
Allegiant Air
Deal found 1/28$166
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:20 pm
IDA
-
LAS
1 stop6h 36m
Multiple Airlines
Fri 2/2712:45 pm
LAS
-
IDA
Nonstop1h 45m
Multiple Airlines
Deal found 1/27$168

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$117
(Booking.com)

One-way from

$86
(Kiwi.com)

Popular in

December

Cheapest in

June

Average price

$138

Good round-trip deal

$136 or less

Good one-way deal

$82 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.
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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. 9% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl.
Search Deals
Price to beat on a one-way flight from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl.
Search Deals

Cheapflights Fare Finder

 
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 January 29, 2026.
Use the filters below to find and compare flights from Idaho Falls to Las Vegas that are best for you.

Fly from

Idaho Falls

Fly to

Las Vegas

Route

Depart

Return

Price

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 2/2

9:20 pm-10:07 pm

Nonstop1h 47m

Las Vegas Harry Reid Intl

Fri 2/6

11:20 am-8:30 pm

1 stop8h 10m

$231

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Tue 3/17

5:20 pm-11:55 pm

1 stop7h 35m

Las Vegas Harry Reid Intl

Wed 3/18

8:00 am-5:19 pm

1 stop8h 19m

$236

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Wed 3/25

5:30 pm-10:17 pm

1 stop5h 47m

Las Vegas Harry Reid Intl

Thu 4/2

5:30 am-1:24 pm

1 stop6h 54m

$269

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 3/9

5:20 pm-11:55 pm

1 stop7h 35m

Las Vegas Harry Reid Intl

Tue 3/10

8:20 am-11:36 pm

2 stops14h 16m

$274

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sat 3/7

5:20 pm-11:55 pm

1 stop7h 35m

Las Vegas Harry Reid Intl

Thu 3/12

6:33 am-11:36 pm

2 stops16h 03m

$277

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sat 3/14

5:20 pm-11:55 pm

1 stop7h 35m

Las Vegas Harry Reid Intl

Tue 3/17

10:02 am-4:43 pm

1 stop5h 41m

$292

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sat 3/7

5:20 pm-11:55 pm

1 stop7h 35m

Las Vegas Harry Reid Intl

Mon 3/9

6:58 pm-4:43 pm

2 stops20h 45m

$295

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Tue 3/24

5:59 pm-10:46 pm

1 stop5h 47m

Las Vegas Harry Reid Intl

Thu 3/26

7:00 am-5:19 pm

1 stop9h 19m

$314

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Wed 2/25

8:00 am-3:15 pm

1 stop8h 15m

Las Vegas Harry Reid Intl

Wed 2/25

7:29 pm-11:36 pm

2 stops27h 07m

$318

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Tue 3/24

5:59 pm-10:46 pm

1 stop5h 47m

Las Vegas Harry Reid Intl

Wed 4/1

8:00 am-4:19 pm

1 stop7h 19m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 23 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
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 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.

Cheapflights Insights

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

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 January 23, 2026.

The best time to book flights from Idaho Falls to Las Vegas is 26 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 $67). Flying from Idaho Falls to Las Vegas in February is currently the most expensive (average of $122). 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 January 29, 2026.

A simple way to save on the total cost of your ticket is to fly from Idaho Falls to Las Vegas in the afternoon. If you’re flexible enough to do this you can expect to save up to 49% on your trip compared to booking a flight in the morning.

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 January 29, 2026.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Idaho Falls to Las Vegas have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,808 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Alaska Airlines
8.0
Very good
11,808 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Delta
7.9
Good
8,127 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
United Airlines
7.4
Good
9,215 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
American Airlines
7.2
Good
11,206 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading
Allegiant Air
7.2
Good
706 reviews
Alaska Airlines
8.0
Very good
11,808 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

STS - LAX

Enjoyed staff assistance from ticking thru tsa , boarding and in the plane Couldn’t pick a seat except upgrading

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 13 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Alaska Airlines and United Airlines can get you from Idaho Falls to Las Vegas in just under 5h 47m. Your travel time can differ by up to 1h 48m. Airlines will cover a distance of 538 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Allegiant Air, at $85, was found to be the cheapest airline from Idaho Falls to Las Vegas.Alternate airlines to your destination round-trip include Alaska Airlines and Delta. Allegiant Air is currently priced 50% 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 $54. However, be on the lookout for offers from United Airlines and Delta, 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 $142, our data shows the cheapest flight currently is $54. When looking at the most popular route, (Idaho Falls Fanning Field - Las Vegas Harry Reid Intl), you can expect to pay $129 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 $67). Flying from Idaho Falls to Las Vegas in February is currently the most expensive (average of $122). 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 Las Vegas?

Book flights to Las Vegas if you plan to visit one of these locations
Paradise
Henderson
North Las Vegas
Kingman
Winchester
Primm
Mesquite
Boulder City
Needles
Sunrise Manor

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Top 5 airlines flying from Idaho Falls to Las Vegas

Discover the top 5 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$85Average$151FlexibilityNo cancel feeOn-time88%
Alaska AirlinesCheapest$120Average$418FlexibilityNo cancel feeOn-time75%
DeltaCheapest$128Average$304FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$194Average$331FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$279Average$370FlexibilityNo cancel feeOn-time71%

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