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$54+ 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 7/2. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — LAS
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
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 September, booked 39 days in advance, depart on a Monday or Friday 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 June 18, 2025.

Round-trip from

$68
(Booking.com)

One-way from

$54
(Booking.com)

Popular in

December

Cheapest in

June

Average price

$116

Good round-trip deal

$97 or less

Good one-way deal

$94 or less
From Idaho Falls Fanning Field to Las Vegas Harry Reid Intl
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One-way flight 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 ($47 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 June 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 June 18, 2025.

This Booking.com deal was found by Cheapflights users on 6/16. 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 7/216:12 pmIDA - LAS
Nonstop1h 42mAllegiant Air
Fri 7/258:56 amLAS - IDA
Nonstop1h 48mAllegiant Air
Deal found 6/16$68
This Mytrip deal was found by Cheapflights users on 6/17. 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.
Mon 7/217:23 pmIDA - LAS
1 stop13h 12mMultiple Airlines
Fri 7/258:56 amLAS - IDA
Nonstop1h 48mMultiple Airlines
Deal found 6/17$137
This Alaska Airlines deal was found by Cheapflights users on 6/16. 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.
Tue 8/54:03 pmIDA - LAS
1 stop6h 23mAlaska Airlines
Sat 8/237:50 amLAS - IDA
1 stop6h 30mAlaska Airlines
Deal found 6/16$240
This Delta deal was found by Cheapflights users on 6/16. 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.
Thu 8/76:00 amIDA - LAS
1 stop3h 49mDelta
Tue 8/195:19 pmLAS - IDA
1 stop4h 08mDelta
Deal found 6/16$241
This United Airlines deal was found by Cheapflights users on 6/16. 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.
Sat 11/12:45 pmIDA - LAS
1 stop7h 01mUnited Airlines
Mon 11/34:41 pmLAS - IDA
1 stop5h 11mUnited Airlines
Deal found 6/16$261

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 June 18, 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

Mon 7/21

6:12 pm-6:54 pm

Nonstop1h 42m

Las Vegas Harry Reid Intl

Fri 7/25

8:56 am-11:44 am

Nonstop1h 48m

$68

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 7/21

7:23 pm-7:35 am

1 stop13h 12m

Las Vegas Harry Reid Intl

Fri 7/25

8:56 am-11:44 am

Nonstop1h 48m

$137

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Tue 8/5

4:03 pm-9:26 pm

1 stop6h 23m

Las Vegas Harry Reid Intl

Sat 8/23

7:50 am-3:20 pm

1 stop6h 30m

$240

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sat 8/9

6:00 am-8:49 am

1 stop3h 49m

Las Vegas Harry Reid Intl

Fri 8/22

6:15 am-10:39 am

1 stop3h 24m

$241

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sat 11/1

2:45 pm-8:46 pm

1 stop7h 01m

Las Vegas Harry Reid Intl

Mon 11/3

4:41 pm-10:52 pm

1 stop5h 11m

$261

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Wed 7/2

4:58 pm-5:40 pm

Nonstop1h 42m

$54

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sat 8/16

4:03 pm-8:38 pm

1 stop5h 35m

$116

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Sat 11/8

3:56 pm-9:00 pm

1 stop6h 04m

$120

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Tue 8/12

6:00 am-8:34 am

1 stop3h 34m

$121

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Thu 7/10

5:49 pm-7:59 am

1 stop15h 10m

$125

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/17

Showing 1-10 of 11 results
1
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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 June 13, 2025.

The best time to book flights from Idaho Falls to Las Vegas is 39 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 June 18, 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 20% 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 Wednesday 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 June 18, 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
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,507 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,810 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
722 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 7 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 64% 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 Hawaiian Airlines and Alaska 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 $106, 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 $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 Idaho Falls?

Book flights to Idaho Falls 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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$88Average$155FlexibilityNo cancel feeOn-time88%
DeltaCheapest$145Average$440FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$189Average$465FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$284Average$628FlexibilityNo cancel feeOn-time69%

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