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Cheap flights from Idaho Falls to Las Vegas from $54

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 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Idaho Falls to Las Vegas

Cheap round-trip flights

Allegiant Air Logo
9:39 pm - 10:23 pmIDA-LAS
1h 44mnonstop
Allegiant Air Logo
1:16 pm - 4:05 pmLAS-IDA
1h 49mnonstop
$68Allegiant Air
Find Deal
Mon, Sep 15 - Fri, Sep 19
Allegiant Air Logo
10:55 pm - 11:39 pmIDA-LAS
1h 44mnonstop
Allegiant Air Logo
12:00 pm - 2:49 pmLAS-IDA
1h 49mnonstop
$88Allegiant Air
Find Deal
Fri, Sep 19 - Mon, Sep 22
Allegiant Air Logo
10:57 pm - 11:39 pmIDA-LAS
1h 42mnonstop
Allegiant Air Logo
11:12 am - 2:01 pmLAS-IDA
1h 49mnonstop
$102Allegiant Air
Find Deal
Fri, Oct 31 - Mon, Nov 3
Allegiant Air Logo
6:20 pm - 7:06 pmIDA-LAS
1h 46mnonstop
Allegiant Air Logo
1:14 pm - 4:00 pmLAS-IDA
1h 46mnonstop
$108Allegiant Air
Find Deal
Mon, Aug 18 - Fri, Aug 22
Logo
9:39 pm - 10:23 pmIDA-LAS
1h 44mnonstop
Logo
10:46 am - 10:05 pmLAS-IDA
10h 19m1 stop
$155
Find Deal
Mon, Sep 15 - Fri, Sep 19
Logo
6:20 pm - 7:06 pmIDA-LAS
1h 46mnonstop
Logo
5:45 am - 2:50 pmLAS-IDA
8h 05m1 stop
$172
Find Deal
Fri, Aug 15 - Fri, Aug 22
Alaska Airlines Logo
6:00 am - 11:28 amIDA-LAS
6h 28m1 stop
Alaska Airlines Logo
2:00 pm - 10:38 pmLAS-IDA
7h 38m1 stop
$235Alaska Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 15
Alaska Airlines Logo
3:57 pm - 9:28 pmIDA-LAS
6h 31m1 stop
Alaska Airlines Logo
7:50 am - 3:38 pmLAS-IDA
6h 48m1 stop
$240Alaska Airlines
Find Deal
Tue, Sep 30 - Tue, Oct 7
Delta Logo
6:53 pm - 11:19 pmIDA-LAS
5h 26m1 stop
Delta Logo
5:13 pm - 10:15 pmLAS-IDA
4h 02m1 stop
$241Delta
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Fri, Oct 10 - Wed, Oct 15
Delta Logo
6:52 pm - 10:18 pmIDA-LAS
4h 26m1 stop
Delta Logo
6:15 am - 10:39 amLAS-IDA
3h 24m1 stop
$270Delta
Find Deal
Wed, Aug 27 - Sun, Aug 31

Allegiant Air flights from Idaho Falls to Las Vegas

Our best Allegiant Air deals on Idaho Falls to Las Vegas flight tickets
Allegiant Air
Sep 15
IDA9:39 pmIdaho Falls Fanning Field
1h 44m
LAS10:23 pmLas Vegas Harry Reid Intl
Sep 19
LAS1:16 pmLas Vegas Harry Reid Intl
1h 49m
IDA4:05 pmIdaho Falls Fanning Field
$68
Find similar
Allegiant Air
Sep 19
IDA10:55 pmIdaho Falls Fanning Field
1h 44m
LAS11:39 pmLas Vegas Harry Reid Intl
Sep 22
LAS12:00 pmLas Vegas Harry Reid Intl
1h 49m
IDA2:49 pmIdaho Falls Fanning Field
$88
Find similar
Allegiant Air
Oct 31
IDA10:57 pmIdaho Falls Fanning Field
1h 42m
LAS11:39 pmLas Vegas Harry Reid Intl
Nov 3
LAS11:12 amLas Vegas Harry Reid Intl
1h 49m
IDA2:01 pmIdaho Falls Fanning Field
$102
Find similar

Alaska Airlines flights from Idaho Falls to Las Vegas

Our best Alaska Airlines deals on Idaho Falls to Las Vegas flight tickets
Alaska Airlines
Oct 15
IDA6:00 amIdaho Falls Fanning Field
6h 28m
1 stop
LAS11:28 amLas Vegas Harry Reid Intl
Oct 15
LAS2:00 pmLas Vegas Harry Reid Intl
7h 38m
1 stop
IDA10:38 pmIdaho Falls Fanning Field
$235
Find similar
Alaska Airlines
Sep 30
IDA3:57 pmIdaho Falls Fanning Field
6h 31m
1 stop
LAS9:28 pmLas Vegas Harry Reid Intl
Oct 7
LAS7:50 amLas Vegas Harry Reid Intl
6h 48m
1 stop
IDA3:38 pmIdaho Falls Fanning Field
$240
Find similar
Alaska Airlines
Sep 30
IDA6:13 amIdaho Falls Fanning Field
7h 45m
2 stops
LAS12:58 pmLas Vegas Harry Reid Intl
Oct 4
LAS8:00 amLas Vegas Harry Reid Intl
6h 38m
1 stop
IDA3:38 pmIdaho Falls Fanning Field
$277
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 August 2, 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 9/15

9:39 pm-10:23 pm

Nonstop1h 44m

Las Vegas Harry Reid Intl

Fri 9/19

1:16 pm-4:05 pm

Nonstop1h 49m

$68

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Fri 9/19

10:55 pm-11:39 pm

Nonstop1h 44m

Las Vegas Harry Reid Intl

Mon 9/22

12:00 pm-2:49 pm

Nonstop1h 49m

$88

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Fri 10/31

10:57 pm-11:39 pm

Nonstop1h 42m

Las Vegas Harry Reid Intl

Mon 11/3

11:12 am-2:01 pm

Nonstop1h 49m

$102

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 8/18

6:20 pm-7:06 pm

Nonstop1h 46m

Las Vegas Harry Reid Intl

Fri 8/22

1:14 pm-4:00 pm

Nonstop1h 46m

$108

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Mon 9/15

9:39 pm-10:23 pm

Nonstop1h 44m

Las Vegas Harry Reid Intl

Fri 9/19

10:46 am-10:05 pm

1 stop10h 19m

$155

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Fri 8/15

6:20 pm-7:06 pm

Nonstop1h 46m

Las Vegas Harry Reid Intl

Fri 8/22

5:45 am-2:50 pm

1 stop8h 05m

$172

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Wed 10/15

6:00 am-11:28 am

1 stop6h 28m

Las Vegas Harry Reid Intl

Wed 10/15

2:00 pm-10:38 pm

1 stop7h 38m

$235

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Tue 9/30

3:57 pm-9:28 pm

1 stop6h 31m

Las Vegas Harry Reid Intl

Tue 10/7

7:50 am-3:38 pm

1 stop6h 48m

$240

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Fri 10/10

6:53 pm-11:19 pm

1 stop5h 26m

Las Vegas Harry Reid Intl

Wed 10/15

5:13 pm-10:15 pm

1 stop4h 02m

$241

Idaho FallsLas Vegas

IDA - LAS

IDALAS

Idaho Falls Fanning Field

Wed 8/27

6:52 pm-10:18 pm

1 stop4h 26m

Las Vegas Harry Reid Intl

Sun 8/31

6:15 am-10:39 am

1 stop3h 24m

$270

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 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 $135. Flights to Las Vegas are more costly in the evening, with an average ticket price of $165. 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 $188 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 $97 on momondo.

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

There are 1 cabin classes 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 August 2025, prices for Idaho Falls to Las Vegas flights are approximately 27% cheaper 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

$54

Fastest flight time

1h 42m

Direct flights

Tue 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 $54. The best round-trip flight deal from Idaho Falls to Las Vegas found on momondo in the last 72 hours is $68.
The fastest flight from Idaho Falls to Las Vegas takes 1h 42m
Direct flights go from Idaho Falls to Las Vegas on Tuesday 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 $85Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
DeltaPriceFrom $145Free CancellationRating
8.0
7,983 reviews
Search Delta flights
Alaska AirlinesPriceFrom $189Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $284Free CancellationRating
7.4
8,904 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 $148, with the best Allegiant Air deals starting from $85 round-trip. 702 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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