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Cheap flights from Idaho Falls to Las Vegas from $65

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Las Vegas departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Idaho Falls to Las Vegas

Cheap round-trip flights

Allegiant Air Logo
7:56 pm - 8:39 pmIDA-LAS
1h 43mnonstop
Allegiant Air Logo
12:09 pm - 2:55 pmLAS-IDA
1h 46mnonstop
$84Allegiant Air
Find Deal
Mon, Nov 17 - Fri, Nov 21
Allegiant Air Logo
9:39 pm - 10:23 pmIDA-LAS
1h 44mnonstop
Allegiant Air Logo
1:25 pm - 4:14 pmLAS-IDA
1h 49mnonstop
$96Allegiant Air
Find Deal
Mon, Sep 29 - Fri, Oct 3
Allegiant Air Logo
7:58 pm - 8:43 pmIDA-LAS
1h 45mnonstop
Allegiant Air Logo
10:27 am - 1:16 pmLAS-IDA
1h 49mnonstop
$98Allegiant Air
Find Deal
Mon, Dec 1 - Fri, Dec 5
Allegiant Air Logo
7:40 pm - 8:23 pmIDA-LAS
1h 43mnonstop
Allegiant Air Logo
1:25 pm - 4:14 pmLAS-IDA
1h 49mnonstop
$100Allegiant Air
Find Deal
Mon, Oct 6 - Fri, Oct 10
Allegiant Air Logo
7:40 pm - 8:23 pmIDA-LAS
1h 43mnonstop
Allegiant Air Logo
1:25 pm - 4:14 pmLAS-IDA
1h 49mnonstop
$109Allegiant Air
Find Deal
Mon, Oct 20 - Fri, Oct 24
Allegiant Air Logo
10:52 pm - 11:35 pmIDA-LAS
1h 43mnonstop
Allegiant Air Logo
11:23 am - 2:19 pmLAS-IDA
1h 56mnonstop
$131Allegiant Air
Find Deal
Mon, Jan 5 - Fri, Jan 16
Allegiant Air Logo
10:52 pm - 11:35 pmIDA-LAS
1h 43mnonstop
Allegiant Air Logo
11:23 am - 2:19 pmLAS-IDA
1h 56mnonstop
$135Allegiant Air
Find Deal
Mon, Jan 5 - Mon, Jan 12
Allegiant Air Logo
7:40 pm - 8:23 pmIDA-LAS
1h 43mnonstop
Allegiant Air Logo
1:22 pm - 4:08 pmLAS-IDA
1h 46mnonstop
$139Allegiant Air
Find Deal
Mon, Oct 27 - Fri, Nov 7
Logo
7:58 pm - 8:43 pmIDA-LAS
1h 45mnonstop
Logo
6:00 am - 3:36 pmLAS-IDA
8h 36m1 stop
$182
Find Deal
Mon, Dec 1 - Fri, Dec 5
Logo
5:04 pm - 9:24 pmIDA-LAS
5h 20m1 stop
Logo
1:22 pm - 4:08 pmLAS-IDA
1h 46mnonstop
$188
Find Deal
Fri, Oct 31 - Fri, Nov 7

Allegiant Air flights from Idaho Falls to Las Vegas

Our best Allegiant Air deals on Idaho Falls to Las Vegas flight tickets
Allegiant Air
Nov 17
IDA7:56 pmIdaho Falls Fanning Field
1h 43m
LAS8:39 pmLas Vegas Harry Reid Intl
Nov 21
LAS12:09 pmLas Vegas Harry Reid Intl
1h 46m
IDA2:55 pmIdaho Falls Fanning Field
$84
Find similar
Allegiant Air
Sep 29
IDA9:39 pmIdaho Falls Fanning Field
1h 44m
LAS10:23 pmLas Vegas Harry Reid Intl
Oct 3
LAS1:25 pmLas Vegas Harry Reid Intl
1h 49m
IDA4:14 pmIdaho Falls Fanning Field
$96
Find similar
Allegiant Air
Dec 1
IDA7:58 pmIdaho Falls Fanning Field
1h 45m
LAS8:43 pmLas Vegas Harry Reid Intl
Dec 5
LAS10:27 amLas Vegas Harry Reid Intl
1h 49m
IDA1:16 pmIdaho Falls Fanning Field
$98
Find similar

United Airlines flights from Idaho Falls to Las Vegas

Our best United Airlines deals on Idaho Falls to Las Vegas flight tickets
United Airlines
Sep 21
IDA5:00 amIdaho Falls Fanning Field
4h 45m
1 stop
LAS8:45 amLas Vegas Harry Reid Intl
Sep 27
LAS1:39 pmLas Vegas Harry Reid Intl
6h 13m
1 stop
IDA8:52 pmIdaho Falls Fanning Field
$386
Find similar
United Airlines
Sep 17
IDA5:00 amIdaho Falls Fanning Field
4h 45m
1 stop
LAS8:45 amLas Vegas Harry Reid Intl
Sep 19
LAS6:00 amLas Vegas Harry Reid Intl
6h 30m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
$571
Find similar
United Airlines
Sep 26
IDA5:00 amIdaho Falls Fanning Field
4h 44m
1 stop
LAS8:44 amLas Vegas Harry Reid Intl
Sep 30
LAS7:35 amLas Vegas Harry Reid Intl
4h 58m
1 stop
IDA1:33 pmIdaho Falls Fanning Field
$605
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated September 15, 2025.
Use the filters below to find and compare flights from Idaho Falls to Las Vegas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 11/17

7:56 pm-8:39 pm

Nonstop1h 43m

Las Vegas Harry Reid Intl

Fri 11/21

12:09 pm-2:55 pm

Nonstop1h 46m

$84

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 9/29

9:39 pm-10:23 pm

Nonstop1h 44m

Las Vegas Harry Reid Intl

Fri 10/3

1:25 pm-4:14 pm

Nonstop1h 49m

$96

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 12/1

7:58 pm-8:43 pm

Nonstop1h 45m

Las Vegas Harry Reid Intl

Fri 12/5

10:27 am-1:16 pm

Nonstop1h 49m

$98

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 10/6

7:40 pm-8:23 pm

Nonstop1h 43m

Las Vegas Harry Reid Intl

Fri 10/10

1:25 pm-4:14 pm

Nonstop1h 49m

$100

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 10/20

7:40 pm-8:23 pm

Nonstop1h 43m

Las Vegas Harry Reid Intl

Fri 10/24

1:25 pm-4:14 pm

Nonstop1h 49m

$109

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 1/5

10:52 pm-11:35 pm

Nonstop1h 43m

Las Vegas Harry Reid Intl

Fri 1/16

11:23 am-2:19 pm

Nonstop1h 56m

$131

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 1/5

10:52 pm-11:35 pm

Nonstop1h 43m

Las Vegas Harry Reid Intl

Mon 1/12

11:23 am-2:19 pm

Nonstop1h 56m

$135

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 10/27

7:40 pm-8:23 pm

Nonstop1h 43m

Las Vegas Harry Reid Intl

Fri 11/7

1:22 pm-4:08 pm

Nonstop1h 46m

$139

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 12/1

7:58 pm-8:43 pm

Nonstop1h 45m

Las Vegas Harry Reid Intl

Fri 12/5

6:00 am-3:36 pm

1 stop8h 36m

$182

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Fri 10/31

5:04 pm-9:24 pm

1 stop5h 20m

Las Vegas Harry Reid Intl

Fri 11/7

1:22 pm-4:08 pm

Nonstop1h 46m

$188

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Las Vegas from

How to get the cheapest flight ticket from Idaho Falls to Las Vegas

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Idaho Falls and Las Vegas?

What is the cheapest month to fly to Las Vegas?

The month of June is, on average, the cheapest month to fly to Las Vegas from Idaho Falls, with most prices found around $115. The month of August is another great option to travel to Las Vegas, with average flight prices from Idaho Falls averaging around $122.

What is the cheapest day to depart on your flight to Las Vegas?

Our data shows that Monday is the least expensive day to fly to Las Vegas. Tickets to fly out on this day can be as low as $96. Flights from Idaho Falls to Las Vegas on a Tuesday will generally be more expensive and average around $471. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Las Vegas?

The cheapest time of day to fly to Las Vegas is in the afternoon when flights can be purchased for as low as $128. Flights to Las Vegas are more costly in the evening, with an average ticket price of $150. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Idaho Falls Fanning Field to Las Vegas Harry Reid Intl flight route?

Fly from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl for the best Idaho Falls Fanning Field - Las Vegas Harry Reid Intl flight prices

How far in advance should I book a flight to Las Vegas?

You are more likely to see cheaper flights to Las Vegas from Idaho Falls when booking weeks ahead of your departure date. In general, you can expect to find flights to Las Vegas for around $175 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Las Vegas from Idaho Falls for as low as $122 on momondo.

What cabin class options are available on Idaho Falls Fanning Field to Las Vegas Harry Reid Intl flights?

There is only 1 cabin class available to choose from on Idaho Falls Fanning Field to Las Vegas Harry Reid Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Idaho Falls to Las Vegas flight prices changed over time?

As of September 2025, prices for Idaho Falls to Las Vegas flights are approximately 44% more expensive when compared to flights at the same time last year.

When to book flights from Idaho Falls to Las Vegas

Are you open to changing your travel dates? Check out the ideal times to fly from Idaho Falls to Las Vegas according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Idaho Falls to Las Vegas (IDA to LAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Idaho Falls to Las Vegas

Best Price Found

$71

Fastest flight time

1h 42m

Direct flights

Tue, Thu, Fri and Sat

Airports in Las Vegas

1 airport
The best one-way flight to Las Vegas from Idaho Falls in the past 72 hours is $71. The best round-trip flight deal from Idaho Falls to Las Vegas found on momondo in the last 72 hours is $100.
The fastest flight from Idaho Falls to Las Vegas takes 1h 42m
Direct flights go from Idaho Falls to Las Vegas on Tuesday, Thursday, Friday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport near Las Vegas: Las Vegas Harry Reid Intl (LAS)
Search flight deals

  • How far is Idaho Falls Fanning Field to Las Vegas Harry Reid Intl by plane?

    A flight from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl will travel around 529.6 mi. By plane, this route typically takes 1h 42m.

  • When did momondo last update prices for flights from Idaho Falls Fanning Field Airport to Las Vegas Harry Reid Intl Airport?

    Prices for flights from Idaho Falls Fanning Field Airport to Las Vegas Harry Reid Intl Airport are updated daily.

  • How many operators does momondo search for flights from Idaho Falls Fanning Field Airport to Las Vegas Harry Reid Intl Airport?

  • How old do you have to be to fly from Idaho Falls Fanning Field Airport to Las Vegas Harry Reid Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Idaho Falls Fanning Field Airport to Las Vegas Harry Reid Intl Airport.

  • What documentation or ID do you need to fly to Las Vegas Harry Reid Intl Airport?

    The necessary travel and health documents for your Las Vegas Harry Reid Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Idaho Falls to Las Vegas?

  • What is the most popular airline from Idaho Falls to Las Vegas?

Best airlines flying from Idaho Falls to Las Vegas

Compare and see reviews for airlines that fly from Idaho Falls to Las Vegas with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $82Free CancellationRating
7.2
699 reviews
Search Allegiant Air flights
DeltaPriceFrom $132Free CancellationRating
7.9
7,954 reviews
Search Delta flights
Alaska AirlinesPriceFrom $189Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $310Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights

  • Allegiant Air Flights From Idaho Falls to Las Vegas

    Across 2 Allegiant Air flights from Idaho Falls to Las Vegas this week, the average price was $142, with the best Allegiant Air deals starting from $82 round-trip. 699 users have rated Allegiant Air on momondo, with an average score of 7.2/10.

Traveling to a place near Las Vegas?

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

Why use momondo?

Why should I use momondo to find a flight deal from Idaho Falls to Las Vegas?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho Falls to Las Vegas. momondo saves you time and could save you money on your trip.

Can I find flights from Idaho Falls to Las Vegas with flexible booking policies on momondo?

All flight searches from Idaho Falls to Las Vegas on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Idaho Falls to Las Vegas?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Idaho Falls to Las Vegas.

I’m not ready to book a flight from Idaho Falls to Las Vegas right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Las Vegas from Idaho Falls. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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