LAS - IDA

$51 Find Cheap Flights from Las Vegas to Idaho Falls - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Las Vegas to Idaho Falls departing on 9/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Everything you should know

Cheapest round-trip
$89
Typical prices: $114-$195
Allegiant Air
Fri 9/18Mon 9/21
LAS - IDA • Non-stop
Cheapest one-way
$51
Typical prices: $62-$154
Allegiant Air
Mon 9/21
LAS - IDA • Non-stop
Nonstop flights
Mon, Fri
You can fly direct with Allegiant Air. Average duration is 1h 47m
Direct flights
Direct flights
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+1
Direct flights
Direct flights
+1
When to travel
Cheapest • 41% price drop
Most popular
Good to know
Good to know
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Good to know
Good to know
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Booking Insights
Flight Deals

Cheap Flights from Las Vegas to Idaho Falls (LAS-IDA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Las Vegas to Idaho Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Las Vegas to Idaho Falls

Fri, Sep 18 - Mon, Sep 21
Allegiant Air Logo
9:15 am - 12:04 pm
LAS
-
IDA
1h 49mnonstop
Allegiant Air Logo
6:21 pm - 7:06 pm
IDA
-
LAS
1h 45mnonstop
$89Allegiant Air
Fri, Sep 18 - Mon, Sep 21
Allegiant Air Logo
9:15 am - 12:04 pm
LAS
-
IDA
1h 49mnonstop
Allegiant Air Logo
6:21 pm - 7:06 pm
IDA
-
LAS
1h 45mnonstop
$93Allegiant Air
Fri, Aug 28 - Mon, Aug 31
Allegiant Air Logo
7:35 am - 10:22 am
LAS
-
IDA
1h 47mnonstop
Allegiant Air Logo
8:33 pm - 9:16 pm
IDA
-
LAS
1h 43mnonstop
$97Allegiant Air
Fri, Aug 28 - Mon, Aug 31
Allegiant Air Logo
7:35 am - 10:22 am
LAS
-
IDA
1h 47mnonstop
Allegiant Air Logo
8:33 pm - 9:16 pm
IDA
-
LAS
1h 43mnonstop
$97Allegiant Air
Fri, Sep 18 - Mon, Sep 21
Multiple Airlines Logo
9:15 am - 12:04 pm
LAS
-
IDA
1h 49mnonstop
Multiple Airlines Logo
12:24 pm - 5:46 pm
IDA
-
LAS
6h 22m
1 stop
$173Multiple Airlines
Fri, Aug 28 - Fri, Sep 4
Multiple Airlines Logo
7:35 am - 10:22 am
LAS
-
IDA
1h 47mnonstop
Multiple Airlines Logo
5:22 pm - 5:13 pm
IDA
-
LAS
24h 51m
1 stop
$178Multiple Airlines
Fri, Sep 18 - Mon, Sep 21
Multiple Airlines Logo
9:15 am - 12:04 pm
LAS
-
IDA
1h 49mnonstop
Multiple Airlines Logo
12:24 pm - 5:46 pm
IDA
-
LAS
6h 22m
1 stop
$184Multiple Airlines
Wed, Sep 2 - Fri, Sep 4
Delta Logo
6:00 am - 10:50 am
LAS
-
IDA
3h 50m
1 stop
Delta Logo
7:00 pm - 11:55 pm
IDA
-
LAS
5h 55m
1 stop
$311Delta
Mon, Aug 31 - Sun, Sep 6
Delta Logo
6:00 am - 10:50 am
LAS
-
IDA
3h 50m
1 stop
Delta Logo
3:17 pm - 9:08 pm
IDA
-
LAS
6h 51m
2 stops
$316Delta
Sun, Aug 23 - Tue, Aug 25
Delta Logo
6:00 am - 10:50 am
LAS
-
IDA
3h 50m
1 stop
Delta Logo
7:00 pm - 10:36 pm
IDA
-
LAS
4h 36m
1 stop
$321Delta
Booking Insights

KAYAK's insights & trends for Las Vegas to Idaho Falls flights

Get data-powered insights and trends into flights from Las Vegas to Idaho Falls to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Las Vegas to Idaho Falls?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Las Vegas to Idaho Falls departing in September.

Flight prices are below average for this route right now.

Flights to Idaho Falls from Las Vegas usually cost between $105 and $117 in September.
The lowest price found in the past 5 days was $89 on Allegiant Air (Sep 18-Sep 21).

What’s the cheapest day of the week to fly from Las Vegas to Idaho Falls?

The average price of all round-trip flights from Las Vegas to Idaho Falls clicked on KAYAK for each day over the last 12 months.

When flying from Las Vegas to Idaho Falls, you should consider leaving on a Thursday and avoid Tuesdays if you are looking for the best rates. For your return to Las Vegas, you’ll find the best rates on Mondays and the most expensive ones on Thursdays.

What is the cheapest month to fly from Las Vegas to Idaho Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Las Vegas to Idaho Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Las Vegas to Idaho Falls is November, where tickets cost $104 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $289 and $237 respectively.

Can I save money by flying with a layover from Las Vegas to Idaho Falls?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $150, prices are generally cheapest when you fly direct.

Good to know

Low season

March

Cheapest flight

$51
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 15% increase in price.
Flight from Las Vegas to Idaho Falls

When to book flights from Las Vegas to Idaho Falls

Are your dates flexible? Find out the best times to travel from Las Vegas to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Las Vegas to Idaho Falls

  • Which airlines provide fair baggage limitations on their flights between Las Vegas (LAS) and Idaho Falls (IDA)?

    Southwest offers the most lenient baggage regulations while flying from Las Vegas to Idaho Falls. The airline doesn't charge you for carry-on or your first two checked bags, as they don't weigh more than 50 pounds.

  • Which major airlines operate flights from Las Vegas to Idaho Falls with pet-friendly policies?

    Your pet is welcome to accompany you on any flight operated by Southwest Airlines, Delta, American Airlines, or United Airlines between Las Vegas (LAS) and Idaho Falls (IDA). These airlines will allow you to fly with your pet in the cabin if the carrier it is in fits underneath the airplane seats plus the combined weight of the pet and the carrier is under 25 lbs.

  • Which airline route offers the most convenient and cost-effective flying options between Las Vegas and Idaho Falls?

    A connecting flight from Las Vegas (LAS) to Idaho Falls (IDA) can be a better option than a direct ticket if your budget is tight. Several carriers, including United Airlines, American Airlines, Alaska Airlines, and Southwest Airlines, offer connecting flights on this route. These airlines have their respective stopovers in Chicago, Phoenix, San Francisco, and Denver.

  • How can I travel from Las Vegas's downtown to LAS in the shortest time possible?

    Taking a taxi or rideshare service like Uber or Lyft is a convenient option. Taxis are readily available in downtown Las Vegas, and you can use a rideshare app to request a pickup. The travel time will depend on the traffic conditions, but it typically takes around 10-15 minutes to reach the airport from downtown.

  • How many flights are there between Las Vegas and Idaho Falls per day?

    There is a maximum of 1 nonstop flight a day that takes off from Las Vegas and lands in Idaho Falls, with an average flight time of 1h 47m. The most common departure time is 7:00 am and most flights take off in the afternoon. Each week, there are 2 flights.

  • What is the cheapest flight from Las Vegas to Idaho Falls?

    In the last 5 days, the lowest price for a flight from Las Vegas to Idaho Falls was $51 for a one-way ticket and $89 for a round-trip.

  • Do I need a passport to fly between Las Vegas and Idaho Falls?

    No

  • Which airlines offer Wi-Fi service onboard planes from Las Vegas to Idaho Falls?

    Only Alaska Airlines offers inflight Wi-Fi service on the Las Vegas to Idaho Falls flight route.

  • Which aircraft models fly most regularly from Las Vegas to Idaho Falls?

    The Airbus A319 is the aircraft model that flies most regularly on the Las Vegas to Idaho Falls flight route.

  • Which airline alliances offer flights from Las Vegas to Idaho Falls?

    SkyTeam is the only airline alliance operating flights between Las Vegas and Idaho Falls.

  • On which days can I fly direct from Las Vegas to Idaho Falls?

    You can catch a nonstop flight from Las Vegas to Idaho Falls on on Monday, and Friday.

  • Which is the best airline for flights from Las Vegas to Idaho Falls, Delta or Allegiant Air?

    The two airlines most popular with KAYAK users for flights from Las Vegas to Idaho Falls are Delta and Allegiant Air. With an average price for the route of $300 and an overall rating of 7.8, Delta is the most popular choice. Allegiant Air is also a great choice for the route, with an average price of $117 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Las Vegas to Idaho Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Las Vegas to Idaho Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Las Vegas to Idaho Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Las Vegas is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Las Vegas to Idaho Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Las Vegas with another airline. Booking your flights between Las Vegas and IDA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Las Vegas to Idaho Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Idaho Falls from Las Vegas up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Las Vegas to Idaho Falls

  • Looking for a cheap flight? 25% of our users found flights on this route for $72 or less one-way and $94 or less round-trip.
  • Most business travelers choose Idaho Falls Regional Airport (IDA) as their arrival airport when flying from Las Vegas to Idaho Falls. IDA is strategically located in Idaho Falls, which serves as a regional economic hub. Its proximity to businesses, industries, and corporate offices makes it a convenient choice for business travelers. It allows quick access to the city's commercial and industrial areas, reducing travel time and enhancing productivity.
  • Consider flying with Alaska Airlines, United Airlines, or Delta if you want a chance to upgrade to a first-class cabin from business, or economy class from Las Vegas (LAS) to Idaho Falls (IDA). These airlines give their customers the opportunity to request an upgrade either at check-in or during the ticketing process utilizing a special bidding mechanism.
  • The majority of environmentalists choose to fly out of Harry Reid International Airport (LAS) when flying from Las Vegas to Idaho Falls. This can be attributed to steps taken by LAS Airport to improve energy efficiency, including the creation of energy-efficient lighting systems, the use of natural lighting, as well as the adoption of energy-management techniques that help reduce greenhouse gas emissions.
  • Consider choosing Delta Air Lines, United Airlines, or American Airlines if you wish to travel from Las Vegas to Idaho Falls with your children. These airlines provide their passengers complimentary in-flight Wi-Fi connections to enable them access to a variety of kid-friendly entertainment alternatives, including streaming musical albums, cartoons, and movies.
  • Consider sleeping the night before your trip near to LAS if you're hoping to catch the first flight from Las Vegas to Idaho Falls. Because of its proximity to LAS, Best Western Mccarran Inn makes a convenient choice for a hotel.

Prefer to fly direct from Las Vegas to Idaho Falls?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Las Vegas Harry Reid Intl to Idaho Falls Fanning Field.
Find which airlines fly direct from Las Vegas Harry Reid Intl Airport to Idaho Falls Fanning Field Airport, which days they fly and book direct flights.

Direct departures

Las Vegas Harry Reid Intl to Idaho Falls Fanning Field

Monday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Idaho Falls Fanning Field to Las Vegas Harry Reid Intl

Monday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

See more direct flights

Reviews of the top airlines flying from Las Vegas to Idaho Falls

 
See real verified KAYAK customer reviews for airlines flying from Las Vegas to Idaho Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Las Vegas to Idaho Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8494 reviews
7.2Food
7.8Entertainment
8.1Boarding
7.8Comfort
8.5Crew
Airline reviews

I missed the flight because the Minneapolis flight was 49 minutes LATE, and the Boise flight LEFT 24 minutes EARLY!

2.0 MediocreAnonymous, Jul 2026
MSP - BOI
Read more Delta reviews

I missed the flight because the Minneapolis flight was 49 minutes LATE, and the Boise flight LEFT 24 minutes EARLY!

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

De planning was an absolute mess. We were never told that we weren’t at the gate and that we had to go down unstable stairs and then hop on a bus. People were falling, we couldn’t tell who was in charge. Overall terrible communication that ended up leaving a bad impression at the very end of the experience.

Long line to check bags. Curbside check-in was closed. Seat back monitor was not working.

Left on time. Arrived on time. That’s all i ask.

AC barely worked on a 50 minute flight. It was very warm the whole flight. Flight was very bumpy and hard landing.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

It was poor a four hour delay and no explanation for the delay. What’s a 35 dollars going to do. It also made me miss my car rental,

It was on time. Flight was comfortable. Staff was nice. It was the way a flight should always be.

The price was the only good thing about this flight. It was scary during takeoff when the plane tilted side to side. It made me feel very nervous as I have never had a take-off that unsmooth. There was no on-flight movie or music options and the only complimentary option was water. Other airlines offer trail mix or a caramel cookie and pop options as complimentary. This flight was a 2.5 hour flight. I understand for shorter flights not having options, but a flight 2 hours or longer should offer more complimentary options and in flight entertainment. Also the seats did not recline and for a longer flight reclining seats are a must for comfort.

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

I liked how when I got on board how fast we ended up taking off but what I truly disliked was how uncomfortable the seats were. There was truly never a time that I could ever get comfortable during both of my flights. The seats could get away during shorter flights but flights 3 hour plus makes it hard to enjoy.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

They boarded passengers that sat in the back of the plane first, making boarding very efficient.

The flight was delayed 6 hours and we were only offered an $8 food credit. My husband stood in line to get the credit for 45 minutes and when he got close to the end of the line the computers went down.

A foot rest for short legged people and a complimentary water would be nice.

Everything you need to know for your flight from Las Vegas to Idaho Falls

Information on your arrival and departure airports