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Cheap flights from Las Vegas to Idaho Falls from $58

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Las Vegas to Idaho Falls departing on 8/28. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Las Vegas to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
9:15 am - 12:04 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
Allegiant Air Logo
6:21 pm - 7:06 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
1h 45mnonstop
$93Allegiant Air
Fri, Sep 18 - Mon, Sep 21
Allegiant Air Logo
9:01 am - 11:50 amLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
Allegiant Air Logo
6:21 pm - 7:06 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
1h 45mnonstop
$97Allegiant Air
Fri, Sep 11 - Mon, Sep 14
Allegiant Air Logo
9:01 am - 11:50 amLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
Allegiant Air Logo
6:51 pm - 7:36 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
1h 45mnonstop
$112Allegiant Air
Fri, Sep 11 - Fri, Sep 18
Allegiant Air Logo
6:05 am - 8:54 amLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
Allegiant Air Logo
6:51 pm - 7:36 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
1h 45mnonstop
$114Allegiant Air
Fri, Sep 4 - Fri, Sep 18
Multiple Airlines Logo
9:15 am - 12:04 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
Multiple Airlines Logo
12:24 pm - 5:46 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
6h 22m1 stop Santa Ana J. Wayne/Orange Cnty
$206Multiple Airlines
Fri, Sep 18 - Mon, Sep 21
Multiple Airlines Logo
9:01 am - 11:50 amLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
Multiple Airlines Logo
3:57 pm - 8:22 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
5h 25m1 stop Portland
$209Multiple Airlines
Fri, Sep 11 - Tue, Sep 15
Multiple Airlines Logo
9:01 am - 11:50 amLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
Multiple Airlines Logo
12:54 pm - 8:45 amIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
20h 51m1 stop Santa Ana J. Wayne/Orange Cnty
$218Multiple Airlines
Fri, Sep 11 - Fri, Sep 18
Delta Logo
1:30 pm - 10:02 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
7h 32m2 stops Los Angeles Salt Lake City
Delta Logo
6:45 pm - 12:31 amIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
6h 46m1 stop Salt Lake City
$450Delta
Thu, Dec 17 - Wed, Dec 23
Delta Logo
1:22 pm - 10:22 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
8h 00m2 stops Los Angeles Salt Lake City
Delta Logo
6:57 pm - 11:35 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
5h 38m1 stop Salt Lake City
$477Delta
Tue, Sep 15 - Fri, Sep 18
Delta Logo
9:53 am - 6:17 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
7h 24m2 stops Los Angeles Salt Lake City
Delta Logo
6:57 pm - 11:35 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
5h 38m1 stop Salt Lake City
$510Delta
Thu, Sep 10 - Thu, Sep 17

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Allegiant Air flights from Las Vegas to Idaho Falls

Our best Allegiant Air deals on Las Vegas to Idaho Falls flight tickets
Allegiant Air
Sep 18
LAS9:15 amLas Vegas Harry Reid Intl
1h 49m
IDA12:04 pmIdaho Falls Fanning Field
Sep 21
IDA6:21 pmIdaho Falls Fanning Field
1h 45m
LAS7:06 pmLas Vegas Harry Reid Intl
$93
Allegiant Air
Sep 11
LAS9:01 amLas Vegas Harry Reid Intl
1h 49m
IDA11:50 amIdaho Falls Fanning Field
Sep 14
IDA6:21 pmIdaho Falls Fanning Field
1h 45m
LAS7:06 pmLas Vegas Harry Reid Intl
$97
Allegiant Air
Sep 11
LAS9:01 amLas Vegas Harry Reid Intl
1h 49m
IDA11:50 amIdaho Falls Fanning Field
Sep 18
IDA6:51 pmIdaho Falls Fanning Field
1h 45m
LAS7:36 pmLas Vegas Harry Reid Intl
$112

Alaska Airlines flights from Las Vegas to Idaho Falls

Our best Alaska Airlines deals on Las Vegas to Idaho Falls flight tickets
Alaska Airlines
Sep 25
LAS7:02 amLas Vegas Harry Reid Intl
5h 22m
1 stop
IDA1:24 pmIdaho Falls Fanning Field
Sep 28
IDA6:18 amIdaho Falls Fanning Field
8h 23m
1 stop
LAS1:41 pmLas Vegas Harry Reid Intl
$321
Alaska Airlines
Oct 30
LAS2:07 pmLas Vegas Harry Reid Intl
7h 52m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Nov 2
IDA3:55 pmIdaho Falls Fanning Field
5h 08m
1 stop
LAS8:03 pmLas Vegas Harry Reid Intl
$341
Alaska Airlines
Aug 26
LAS10:30 amLas Vegas Harry Reid Intl
11h 26m
1 stop
IDA10:56 pmIdaho Falls Fanning Field
Aug 28
IDA3:57 pmIdaho Falls Fanning Field
5h 28m
1 stop
LAS8:25 pmLas Vegas Harry Reid Intl
$349

momondo Fare Finder

 
Customize your flight search to find flights from Las Vegas to Idaho Falls 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 15, 2026.
Use the filters below to find and compare flights from Las Vegas to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Fri 9/18

9:15 am-12:04 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 9/21

6:21 pm-7:06 pm

Nonstop1h 45m

$93

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Fri 9/11

9:01 am-11:50 am

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 9/14

6:21 pm-7:06 pm

Nonstop1h 45m

$97

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Fri 9/11

9:01 am-11:50 am

Nonstop1h 49m

Idaho Falls Fanning Field

Fri 9/18

6:51 pm-7:36 pm

Nonstop1h 45m

$112

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Fri 9/4

6:05 am-8:54 am

Nonstop1h 49m

Idaho Falls Fanning Field

Fri 9/18

6:51 pm-7:36 pm

Nonstop1h 45m

$114

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Fri 9/18

9:15 am-12:04 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 9/21

12:24 pm-5:46 pm

1 stop6h 22m

$206

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Fri 9/11

9:01 am-11:50 am

Nonstop1h 49m

Idaho Falls Fanning Field

Tue 9/15

3:57 pm-8:22 pm

1 stop5h 25m

$209

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Fri 9/11

9:01 am-11:50 am

Nonstop1h 49m

Idaho Falls Fanning Field

Fri 9/18

12:54 pm-8:45 am

1 stop20h 51m

$218

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Thu 12/17

1:30 pm-10:02 pm

2 stops7h 32m

Idaho Falls Fanning Field

Wed 12/23

6:45 pm-12:31 am

1 stop6h 46m

$450

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Tue 9/15

1:22 pm-10:22 pm

2 stops8h 00m

Idaho Falls Fanning Field

Fri 9/18

6:57 pm-11:35 pm

1 stop5h 38m

$477

Las VegasIdaho Falls

LAS Las Vegas Harry Reid Intl - IDA Idaho Falls Fanning Field

LASIDA

Las Vegas Harry Reid Intl

Thu 9/10

9:53 am-6:17 pm

2 stops7h 24m

Idaho Falls Fanning Field

Thu 9/17

6:57 pm-11:35 pm

1 stop5h 38m

$510

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 Idaho Falls from

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

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 Las Vegas and Idaho Falls?

Prices are currently low for flights on this route.

Typical prices usually range from $94 to $117.
The lowest price recently found on this route was $93.

What is the cheapest month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of November, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $114.

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Thursday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $105. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Tuesday is $201.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is in the afternoon. Flights from Las Vegas to Idaho Falls during this time can be as low as $96. Try not to purchase tickets at noon because they tend to be around $122. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

What cabin class options are available on Las Vegas to Idaho Falls flights?

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

Can stopping save me money on Las Vegas to Idaho Falls flights?

No. A direct flight is the cheapest option for a flight between Las Vegas to Idaho Falls.

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

As of August 2026, prices for Las Vegas to Idaho Falls flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from Las Vegas to Idaho Falls

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

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

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

Best Price Found

$72

Fastest flight time

1h 49m

Direct flights

Tue and Sat

Airports in Idaho Falls

1 airport
The best one-way flight to Idaho Falls from Las Vegas in the past 72 hours is $72. The best round-trip flight deal from Las Vegas to Idaho Falls found on momondo in the last 72 hours is $63.
The fastest flight from Las Vegas to Idaho Falls takes 1h 49m
Direct flights go from Las Vegas to Idaho Falls on Tuesday and Saturday. The only airline offering direct flights is Allegiant Air.
There is 1 airport in Idaho Falls. From Las Vegas there are direct flights to Idaho Falls Fanning Field (IDA).
Search flight deals

Frequently asked questions about flying from Las Vegas to Idaho Falls

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

    The distance between Las Vegas Harry Reid Intl and Idaho Falls Fanning Field is about 529.6 mi. By plane, this route typically takes 1h 49m.

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

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Las Vegas Harry Reid Intl Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The required travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Best airlines flying from Las Vegas to Idaho Falls

Compare and see reviews for airlines that fly from Las Vegas to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $75Free CancellationRating
7.3
677 reviews
Search Allegiant Air flights
DeltaPriceFrom $149Free CancellationRating
7.8
8,509 reviews
Search Delta flights

  • Allegiant Air Flights From Las Vegas to Idaho Falls

    Allegiant Air is one of the most popular airlines flying from Las Vegas to Idaho Falls, operating 2 flights/week on average for this route. A good Allegiant Air flight deal for Las Vegas to Idaho Falls starts from $75 round-trip, up to an average price of $117. Our users have rated Allegiant Air at 7.3/10.

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

Why use momondo?

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

Finding the right flight to Idaho Falls from Las Vegas is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Idaho Falls quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Idaho Falls from Las Vegas which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Las Vegas and Idaho Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Las Vegas to Idaho Falls flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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