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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 1/23. 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 Las Vegas to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
11:23 am - 2:19 pm
LAS
-
IDA
1h 56mnonstop
Allegiant Air Logo
9:20 pm - 10:07 pm
IDA
-
LAS
1h 47mnonstop
$105Allegiant Air
Fri, Jan 9 - Mon, Jan 12
Allegiant Air Logo
12:45 pm - 3:31 pm
LAS
-
IDA
1h 46mnonstop
Allegiant Air Logo
10:31 pm - 11:19 pm
IDA
-
LAS
1h 48mnonstop
$108Allegiant Air
Fri, Feb 20 - Mon, Feb 23
Allegiant Air Logo
12:45 pm - 3:31 pm
LAS
-
IDA
1h 46mnonstop
Allegiant Air Logo
10:29 pm - 11:17 pm
IDA
-
LAS
1h 48mnonstop
$116Allegiant Air
Fri, Feb 20 - Fri, Feb 27
Allegiant Air Logo
11:23 am - 2:19 pm
LAS
-
IDA
1h 56mnonstop
Allegiant Air Logo
9:20 pm - 10:07 pm
IDA
-
LAS
1h 47mnonstop
$127Allegiant Air
Fri, Feb 6 - Mon, Feb 9
Multiple Airlines Logo
11:23 am - 2:19 pm
LAS
-
IDA
1h 56mnonstop
Multiple Airlines Logo
5:34 pm - 2:48 pm
IDA
-
LAS
22h 14m1 stop
$152Multiple Airlines
Fri, Jan 9 - Mon, Jan 12
Allegiant Air Logo
1:23 pm - 4:12 pm
LAS
-
IDA
1h 49mnonstop
Allegiant Air Logo
10:52 pm - 11:35 pm
IDA
-
LAS
1h 43mnonstop
$175Allegiant Air
Fri, Jan 2 - Mon, Jan 5
Multiple Airlines Logo
11:23 am - 2:19 pm
LAS
-
IDA
1h 56mnonstop
Multiple Airlines Logo
5:34 pm - 4:49 pm
IDA
-
LAS
24h 15m2 stops
$179Multiple Airlines
Fri, Jan 9 - Mon, Jan 12
Multiple Airlines Logo
11:13 am - 9:41 pm
LAS
-
IDA
9h 28m1 stop
Multiple Airlines Logo
10:31 pm - 11:19 pm
IDA
-
LAS
1h 48mnonstop
$180Multiple Airlines
Fri, Feb 20 - Mon, Feb 23
Multiple Airlines Logo
11:13 am - 8:30 pm
LAS
-
IDA
8h 17m1 stop
Multiple Airlines Logo
9:20 pm - 10:07 pm
IDA
-
LAS
1h 47mnonstop
$189Multiple Airlines
Fri, Feb 6 - Mon, Feb 9
Allegiant Air Logo
12:45 pm - 3:31 pm
LAS
-
IDA
1h 46mnonstop
Allegiant Air Logo
10:31 pm - 11:19 pm
IDA
-
LAS
1h 48mnonstop
$195Allegiant Air
Mon, Feb 16 - Mon, Feb 23

United Airlines flights from Las Vegas to Idaho Falls

Our best United Airlines deals on Las Vegas to Idaho Falls flight tickets
United Airlines
Jan 13
LAS9:56 amLas Vegas Harry Reid Intl
4h 35m
1 stop
IDA3:31 pmIdaho Falls Fanning Field
Jan 20
IDA4:19 pmIdaho Falls Fanning Field
5h 13m
1 stop
LAS8:32 pmLas Vegas Harry Reid Intl
$248
Find similar
United Airlines
Feb 18
LAS7:30 amLas Vegas Harry Reid Intl
5h 00m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
Feb 24
IDA2:40 pmIdaho Falls Fanning Field
5h 40m
1 stop
LAS7:20 pmLas Vegas Harry Reid Intl
$261
Find similar
United Airlines
Dec 31
LAS4:23 pmLas Vegas Harry Reid Intl
5h 36m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 4
IDA4:05 pmIdaho Falls Fanning Field
6h 53m
1 stop
LAS9:58 pmLas Vegas Harry Reid Intl
$470
Find similar

Alaska Airlines flights from Las Vegas to Idaho Falls

Our best Alaska Airlines deals on Las Vegas to Idaho Falls flight tickets
Alaska Airlines
Jan 22
LAS1:43 pmLas Vegas Harry Reid Intl
8h 16m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 25
IDA6:58 pmIdaho Falls Fanning Field
5h 14m
1 stop
LAS11:12 pmLas Vegas Harry Reid Intl
$258
Find similar
Alaska Airlines
Jan 22
LAS10:31 amLas Vegas Harry Reid Intl
11h 28m
2 stops
IDA10:59 pmIdaho Falls Fanning Field
Jan 25
IDA6:58 pmIdaho Falls Fanning Field
5h 14m
1 stop
LAS11:12 pmLas Vegas Harry Reid Intl
$277
Find similar
Alaska Airlines
Jan 23
LAS1:43 pmLas Vegas Harry Reid Intl
8h 16m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 26
IDA6:58 pmIdaho Falls Fanning Field
5h 14m
1 stop
LAS11:12 pmLas Vegas Harry Reid Intl
$288
Find similar

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 December 18, 2025.
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

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 1/9

11:23 am-2:19 pm

Nonstop1h 56m

Idaho Falls Fanning Field

Mon 1/12

9:20 pm-10:07 pm

Nonstop1h 47m

$105

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 2/20

12:45 pm-3:31 pm

Nonstop1h 46m

Idaho Falls Fanning Field

Mon 2/23

10:31 pm-11:19 pm

Nonstop1h 48m

$108

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 2/20

12:45 pm-3:31 pm

Nonstop1h 46m

Idaho Falls Fanning Field

Fri 2/27

10:29 pm-11:17 pm

Nonstop1h 48m

$116

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 2/6

11:23 am-2:19 pm

Nonstop1h 56m

Idaho Falls Fanning Field

Mon 2/9

9:20 pm-10:07 pm

Nonstop1h 47m

$127

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 1/9

11:23 am-2:19 pm

Nonstop1h 56m

Idaho Falls Fanning Field

Mon 1/12

5:34 pm-2:48 pm

1 stop22h 14m

$152

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 1/2

1:23 pm-4:12 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 1/5

10:52 pm-11:35 pm

Nonstop1h 43m

$175

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 1/9

11:23 am-2:19 pm

Nonstop1h 56m

Idaho Falls Fanning Field

Mon 1/12

5:34 pm-4:49 pm

2 stops24h 15m

$179

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 2/20

11:13 am-9:41 pm

1 stop9h 28m

Idaho Falls Fanning Field

Mon 2/23

10:31 pm-11:19 pm

Nonstop1h 48m

$180

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Fri 2/6

11:13 am-8:30 pm

1 stop8h 17m

Idaho Falls Fanning Field

Mon 2/9

9:20 pm-10:07 pm

Nonstop1h 47m

$189

Las VegasIdaho Falls

LAS - IDA

LASIDA

Las Vegas Harry Reid Intl

Mon 2/16

12:45 pm-3:31 pm

Nonstop1h 46m

Idaho Falls Fanning Field

Mon 2/23

10:31 pm-11:19 pm

Nonstop1h 48m

$195

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 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 May is also cheap. Prices for this month can be found on momondo for an average of $109.

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

Our data shows that Tuesday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $78. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Wednesday is $126.

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 in the evening because they tend to be around $406. 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 Harry Reid Intl to Idaho Falls Fanning Field flights?

There is only 1 cabin class available to choose from on Las Vegas Harry Reid Intl to Idaho Falls Fanning Field 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 December 2025, prices for Las Vegas to Idaho Falls flights are approximately 112% 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

$121

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 $121. The best round-trip flight deal from Las Vegas to Idaho Falls found on momondo in the last 72 hours is $100.
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

  • 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 $85Free CancellationRating
7.2
700 reviews
Search Allegiant Air flights
DeltaPriceFrom $149Free CancellationRating
7.9
8,007 reviews
Search Delta flights

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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