IDA - LAS

$52 Find Cheap Flights from Idaho Falls to Las Vegas

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to Las Vegas departing on 7/3. 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.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Las Vegas

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Las Vegas, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Las Vegas, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$89
Typical prices: $97-$142
Allegiant Air
Mon 8/3Fri 8/7
IDA - LAS • Non-stop
Cheapest one-way
$52
Typical prices: $62-$169
Allegiant Air
Fri 7/3
IDA - LAS • Non-stop
Nonstop flights
Mon, Fri
You can fly direct with Allegiant Air. Average duration is 1h 43m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 32% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 39% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Las Vegas!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to Las Vegas 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 Idaho Falls to Las Vegas

Mon, Aug 3 - Fri, Aug 7
Allegiant Air Logo
10:47 pm - 11:30 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:17 pm - 4:05 pm
LAS
-
IDA
1h 48mnonstop
$89Allegiant Air
Fri, Aug 7 - Mon, Aug 10
Allegiant Air Logo
10:54 pm - 11:37 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:17 pm - 4:05 pm
LAS
-
IDA
1h 48mnonstop
$93Allegiant Air
Mon, Jul 13 - Fri, Jul 17
Allegiant Air Logo
10:47 pm - 11:30 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:12 pm - 4:00 pm
LAS
-
IDA
1h 48mnonstop
$97Allegiant Air
Fri, Jul 24 - Fri, Jul 31
Allegiant Air Logo
10:47 pm - 11:30 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:12 pm - 4:00 pm
LAS
-
IDA
1h 48mnonstop
$101Allegiant Air
Fri, Jul 24 - Fri, Jul 31
Allegiant Air Logo
10:47 pm - 11:30 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:12 pm - 4:00 pm
LAS
-
IDA
1h 48mnonstop
$105Allegiant Air
Mon, Aug 10 - Mon, Aug 17
Allegiant Air Logo
10:54 pm - 11:37 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:17 pm - 4:05 pm
LAS
-
IDA
1h 48mnonstop
$108Allegiant Air
Fri, Aug 21 - Mon, Aug 24
Allegiant Air Logo
5:33 pm - 6:16 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
8:00 am - 10:47 am
LAS
-
IDA
1h 47mnonstop
$109Allegiant Air
Mon, Aug 10 - Fri, Aug 21
Allegiant Air Logo
10:54 pm - 11:37 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
8:00 am - 10:47 am
LAS
-
IDA
1h 47mnonstop
$121Allegiant Air
Fri, Sep 11 - Mon, Sep 14
Allegiant Air Logo
6:37 pm - 7:22 pm
IDA
-
LAS
1h 45mnonstop
Allegiant Air Logo
8:45 am - 11:34 am
LAS
-
IDA
1h 49mnonstop
$133Allegiant Air
Fri, Jul 31 - Mon, Aug 3
Allegiant Air Logo
10:47 pm - 11:30 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:12 pm - 4:00 pm
LAS
-
IDA
1h 48mnonstop
$138Allegiant Air
Booking Insights

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

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

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

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

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

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

Your flight ticket price will generally be cheaper if you fly to Las Vegas on a Monday and more expensive on a Thursday. On your return trip to Idaho Falls, you should consider flying back on a Thursday, and avoid Tuesdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to Las Vegas, 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 Idaho Falls to Las Vegas is August, where tickets cost $108 (return) on average. On the other hand, the most expensive months are February and December, where the average cost of round-trip tickets is $269 and $269 respectively.

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

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

To get a below average price on the flight from Idaho Falls to Las Vegas, you should book around 2 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonJuly
Cheapest flight$52
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 49% increase in price.
Flight from Idaho Falls to Las Vegas

When to book flights from Idaho Falls to Las Vegas

Are your dates flexible? Find out the best times to travel from Idaho Falls to Las Vegas 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 Idaho Falls to Las Vegas

  • Does IDA provide any pet relief areas?

    Yes. They are both outside the terminal, so if you are traveling with a service animal or four-legged friend, make sure they go to the bathroom before you enter the terminal and pass security. One pet relief area is located to the right of the ground level lobby, outside baggage claim. The other pet relief area is located to the left of the lobby and around the corner.

  • How can I get to IDA on public transit?

    You can call a taxi or Idaho Safe Rides. You can also access the service GIFT - Greater Idaho Falls Transit, a door-to-door service. You can call GIFT and book a ride from your location to the airport. You can also take a Salt Lake Express bus to the terminal at IDA.

  • Is IDA an accessible airport?

    Yes. Some accommodations that IDA makes for increased accessibility include oversized automatic doors at all entries and exits. Airlines flying out of IDA provide luggage assistance and wheelchairs for passengers with special needs. An elevator is available past security in the southern vestibule. All restrooms are equipped with at least one special needs stall.

  • Where can I pick up my rental car at LAS?

    The Rent-A-Car Center is about 3 miles from LAS on Gilespie Street. Rent-A-Car Center shuttle buses, which are blue and white, pick up passengers from LAS every 5min to take them to the Rent-A-Car Center. Companies at the Rent-A-Car Center include Enterprise, National, Avis, Hertz, and many more.

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

    There is a maximum of 1 nonstop flight a day that takes off from Idaho Falls and lands in Las Vegas, with an average flight time of 1h 43m. The most common departure time is 10:00 pm and most flights take off at night. Each week, there are 2 flights.

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

    In the last 5 days, the lowest price for a flight from Idaho Falls to Las Vegas was $52 for a one-way ticket and $89 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

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

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Idaho Falls and Las Vegas, with oneworld being the most commonly used for this route.

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

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

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

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Las Vegas are Alaska Airlines and Delta. With an average price for the route of $330 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $397 and an overall rating of 7.8.

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

    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 Idaho Falls to Las Vegas.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Las Vegas from Idaho Falls 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 Idaho Falls to Las Vegas?

    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 Las Vegas with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and LAS 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 Idaho Falls to Las Vegas?

    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 Las Vegas from Idaho Falls 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 Idaho Falls to Las Vegas

  • Looking for a cheap flight? 25% of our users found flights on this route for $71 or less one-way and $121 or less round-trip.
  • When you are looking to book a flight between Idaho Falls Regional Airport (IDA) and the Harry Reid Las Vegas International Airport (LAS), it is unlikely that you will be able to find a direct flight. However, Delta, United Airlines, Alaska Airlines, and American Airlines are among the carriers that operate one-stop flights between IDA and LAS. Some layover cities include Dallas (DFW), Seattle (SEA), Phoenix (PHX), and Denver (DEN). United Airlines, Alaska Airlines, and Delta are among the carriers of operate two-stop flights IDA-LAS.
  • IDA provides different facilities to pass the time as you wait for your flight to LAS. On ground level next to the restrooms, you will find a Game Room that makes you feel like you've stepped into an arcade. If you prefer things a bit more quiet, you can enjoy the Family Quiet Room on the opposite side of the lobby.
  • LAS has installed three Mamava lactation suites throughout the airport to give nursing moms some privacy to breastfeed (if they choose) and pump. Each lactation unit features seating, fold down table, motion activated lighting, and exhaust fan, a code book, a mirror, and electrical outlets.
  • As you are making your way out of the Las Vegas Airport, take time to stop by the Howard W. Cannon Aviation Museum in Terminal 1, Landside. This museum documents and displays the history of aviation in southern Nevada. There are also historical aviation exhibits in the ticketing area, the boarding area, and along the moving walkways.
  • If you want to get in some gambling as soon as you deplane in Las Vegas, you are in luck. The Harry Reid Las Vegas International Airport has over a thousand slot machines throughout the terminals so that you can enjoy yourself virtually from the moment you land.

Prefer to fly direct from Idaho Falls to Las Vegas?

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

Direct departures

Idaho Falls Fanning Field to Las Vegas Harry Reid Intl

Monday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Las Vegas Harry Reid Intl to Idaho Falls Fanning Field

Monday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

See more direct flights

Reviews of the top 5 airlines serving from Idaho Falls to Las Vegas

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to Las Vegas. 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 Idaho Falls to Las Vegas? 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.
7.9
Alaska AirlinesOverall score based on 12582 reviews
7.0Food
7.8Comfort
8.5Crew
8.1Boarding
7.0Entertainment
Airline reviews

Considering my flight to Portland was in a broken chair that I had paid extra for, this one was great. So yeah, wonderful.

8.0 ExcellentAnonymous, May 2026
PDX - LAS
Read more Alaska Airlines reviews

Considering my flight to Portland was in a broken chair that I had paid extra for, this one was great. So yeah, wonderful.

Good staff. Comfortable seats. Had to check my bag because the flight was too full.

Crew were bad Didn’t help with luggage When asked for a glass of wine, I was told that they will serve later , which they didn’t to Me and didn’t serve anyone else in First class . Didn’t offer any snacks , Chips or Nuts to anyone . Flight was not crowded either. Worst Service/ or No Service !

Luggage was severely damaged. Flight was late for several hours

The flight was extremely smooth, and so was the landing. Great piloting.

Late leaving so threatened our connection in Vegas to Seattle. We did make up time and made our connection.

I flew Hawaiian Airlines three times during my trip. Each time, when we went to baggage claim, it took about 45 minutes to an hour to receive our luggage.

Flight was delayed several times then eventually cancelled which caused issues with our hotel, car rental and tickets to planned event. We also spent unplanned expense with Lyft to and from the airport which was frustrating. Customer care was not present during whole time at the airport.

I’ve been flying Alaska Airlines for over 30 years & The boarding personnel letting us in the plane were the rudest I’ve ever experienced. Seemed the plane was over booked & they took THEIR mishap out on my son in law… Treated HIM like absolute garbage to the point our family will not fly Alaska after our trips are complete this year. Sad. We loved Alaska until that experience. I hope others never see the same behavior

I appreciated that the staff went out of the way to make sure I was taken care of.

My service light was on 15 minutes before I had to get up and find a glass of ice. And I was in business class. The meals were not for either my wife and I. She did not eat the entire 10 hour flight and I managed a bowl of soup. I was expecting much more from business with what we paid.

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

It was delayed but other than that it was great.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

At first, we were on the runway for about an hour, literally. The Captain did explain that the Control Tower just had a change shift (sounds like an unrealistic excuse) and then that we had to change a runway. A regular economy seat is made for 12 yo twiggy. I understand Delta wants to push for an upgrade, but after sitting in a Comfort seat and in First class. I would say First class is not worthy of my money. The landing was delayed because of the weather in NYC, I don't hold that against Delta, of course. The Captain did alert us to that upon takeoff in Vegas and again as we reached NY.

My husband is very tall and we generally fly Delta Comfort. We used our companion benefit, and our seats were coach and extremely uncomfortable........ horrid even

I specifically picked out right side aisle seats because my left knee sometimes needs to be stretched. But my experience this trip was that the seats were shuffled and I lost those assigned seats, resulting in me having to sit in a much less desirable position for my comfort.

Other airlines were canceling flights but Delta got us home. Crew was friendly and professional. It would have been nice to have had a little more notice about the delays because we had already arrived at the airport when the first of several delays were communicated but I understand that storm forecasting isn’t simple and we were grateful that Delta didn’t just cancel the flight.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

It was perfect! I've never flown with United before, but I definitely will in the future

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

The flight attendants were great, I joked with one I can’t remember her name, a blond, really sweet. I thought it was run well very professional. This was great i survived Spirit, I know for which I speak.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

First class felt like economy, seats were horrible, food was horrible, staff inattentive

The departure was delayed by 1 hour. The seat was comfortable and selection of entertainment is very good.

Overall all good with the flight. Appreciated the extra spacious upper storage for (vertically standing) carry on. Efficient crew, on time departure... What could it be better is the in seat power. No one was working in our row. We were counting on the in seat power to recharge our battery depleted phones. With the dependency we have in our mobile devices nowadays, the availability of in seat power is a must....

This is a no frills, get it done, efficient airline. The seat is a lawn chair. You better bring your own entertainment. If you want something other than water you need to pay for it. But they will get you to your destination quickly, on time, and then they will turn the flight around and go right back where they came from. Reliably. Couple times a week tops. If it fits into your schedule, you can’t get there cheaper or faster.

A three hour delay to board and then another hour on the tarmac because they couldn't get a tractor? Ugh.

Allegiant canceled the flight. The flight the next day was full. Allegiant did not provide any compensation besides a refund. Last time on Allegiant.

Seats were very uncomfortable and being charged for snacks and water.........

Allegiant actually impressed me, original inbound flight from PBG was so late they gave us a bird inbound from Des Moines and only left 1h late and gained 40 minutes back in the air. Comfortable flight with no frills but no complaints.

Crew was great. No entertainment and food and beverage was for purchase only, even water

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

The worst flying experience ever 3 delays. No accommodations. Had to deboard the plane after being delayed.

I did not go on my trip. I requested a refund and still have not received it.

I went to lower my tray table and it was very nasty. Looks like some one had left some food on it and then just closed it up.

Better service. No food options, but we did get drinks and a cookie.

We were 4+ hours delayed. AA is absolutely obnoxious. They just kept pushing back the time to the point where we did not get into Vegas until after midnight when we were supposed to arrive like 845pm.

We will be writing a long, detailed letter to corporate about our awful experience with American airlines.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

I was a little disappointed of not having an android charger. Only one it was for an iPhone. I've flown American in the past and had access to one.

Almost everything was outstanding. First, we boarded on time and the flight crew did a great job getting everyone seated. Then the pilots took their time and care to make sure the plane was full de-iced three times as there was a bad ice storm a few hours earlier. The plane ride was smooth and comfortable and even the economy seats had decent room and comfort. Flight Attendant Lisa went above and beyond to make sure I was comfortable - she is outstanding. The only thing wrong with the flight, and it is something which needs to be addressed, is that the gate to gate time was over 6.5 hours and not one meal was served. The only thing offered to eat were two small cookies for a transcontinental flight - unacceptable. Charge me more but give me a meal for a long flight. Thankfully Lisa found something for me.

I got bumped due to weight restrictions even tho there were empty seats on my flight. I got put on an other flight with a stopover. My flight that originally was going to take 5-6 hours ever up being 14+ hours and my luggage arrived to my destination without me because I was made to check in my luggage on my original flight when I was deemed ok to board only to be asked to deplane. Worst flight experience.

First class flight attendant was rude and lacked any customer service skills.

They didn't have any gluten-free snacks, oddly, which I require...or any flavored soda water or decaf tea options, which seems to be standard.

It was as expected for such a short flight. No complaints

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

Information on your arrival and departure airports