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$68+ Cheap flights from Idaho Falls to Las Vegas (IDA - LAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — LAS
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
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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 Wednesday and return on a Tuesday

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 julio 31, 2025.

Round-trip from

$68
(Booking.com)

Popular in

December

Cheapest in

June

Average price

$146

Good round-trip deal

$88 or less

Good one-way deal

$63 or less
From Idaho Falls Fanning Field to Las Vegas Harry Reid Intl
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Highest demand for flights based on searches. 19% potential increase in price ($45 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl.
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Price to beat on a one-way flight from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl.
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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 julio 31, 2025.

This Booking.com deal was found by Cheapflights users on 7/30. 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.
lun. 9/159:39 pmIDA - LAS
Nonstop1h 44mAllegiant Air
vie. 9/191:16 pmLAS - IDA
Nonstop1h 49mAllegiant Air
Deal found 7/30$68
This Mytrip deal was found by Cheapflights users on 7/29. 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.
vie. 8/2210:50 pmIDA - LAS
Nonstop1h 46mMultiple Airlines
lun. 8/255:45 amLAS - IDA
1 stop8h 04mMultiple Airlines
Deal found 7/29$143
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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.
mié. 10/156:00 amIDA - LAS
1 stop6h 28mAlaska Airlines
mié. 10/152:00 pmLAS - IDA
1 stop7h 38mAlaska Airlines
Deal found 7/30$235
This Delta deal was found by Cheapflights users on 7/30. 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.
vie. 10/106:53 pmIDA - LAS
1 stop5h 26mDelta
sáb. 10/185:13 pmLAS - IDA
1 stop4h 17mDelta
Deal found 7/30$241

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 julio 31, 2025.
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

lun. 9/15

9:39 pm-10:23 pm

Nonstop1h 44m

Las Vegas Harry Reid Intl

vie. 9/19

1:16 pm-4:05 pm

Nonstop1h 49m

$68

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

lun. 9/15

9:39 pm-10:23 pm

Nonstop1h 44m

Las Vegas Harry Reid Intl

vie. 9/19

10:46 am-10:05 pm

1 stop10h 19m

$155

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

mié. 10/15

6:00 am-11:28 am

1 stop6h 28m

Las Vegas Harry Reid Intl

mié. 10/15

2:00 pm-10:38 pm

1 stop7h 38m

$235

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

vie. 10/10

6:53 pm-11:19 pm

1 stop5h 26m

Las Vegas Harry Reid Intl

sáb. 10/18

5:13 pm-10:30 pm

1 stop4h 17m

$241

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

vie. 10/3

10:57 pm-11:39 pm

Nonstop1h 42m

$81

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

mié. 8/27

5:56 pm-9:46 pm

1 stop4h 50m

$121

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

mié. 8/13

11:20 am-4:14 pm

1 stop5h 54m

$151

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

mié. 8/27

3:54 pm-9:53 am

2 stops18h 59m

$238

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 July 25, 2025.

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 $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 julio 31, 2025.

A simple way to save on the total cost of your ticket is to fly from Idaho Falls to Las Vegas in the morning. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight at noon.

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.

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 julio 31, 2025.
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
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Allegiant Air
7.2
Good
702 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 9 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 $68, 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 63% 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 $81. 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 $93, our data shows the cheapest flight currently is $59. When looking at the most popular route, (Idaho Falls Fanning Field - Las Vegas Harry Reid Intl), you can expect to pay $68 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 Las Vegas?

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

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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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$85Average$148FlexibilityNo cancel feeOn-time88%
DeltaCheapest$145Average$403FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$189Average$465FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$284Average$709FlexibilityNo cancel feeOn-time69%

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