IDA - LAS

$71 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 2/16. 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
$90
Overall average: $259
Allegiant Air
Mon 2/23Fri 2/27
IDA - LAS • Non-stop
Cheapest one-way
$71
Typical prices: $85-$260
Allegiant Air
Mon 2/16
IDA - LAS • Non-stop
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When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 31% compared to booking last minute.
Insights
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Insights
Insights
When to travel
June
Cheapest • 33% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
2 days a week
There are direct flights from Idaho Falls to Las Vegas 2 days a week: Mon, Fri.
Direct flights
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Direct flights
Direct flights
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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, Feb 23 - Fri, Feb 27
Allegiant Air Logo
10:31 pm - 11:19 pm
IDA
-
LAS
1h 48mnonstop
Allegiant Air Logo
12:45 pm - 3:30 pm
LAS
-
IDA
1h 45mnonstop
$90Allegiant Air
Mon, Apr 20 - Fri, Apr 24
Allegiant Air Logo
10:21 pm - 11:02 pm
IDA
-
LAS
1h 41mnonstop
Allegiant Air Logo
12:42 pm - 3:27 pm
LAS
-
IDA
1h 45mnonstop
$99Allegiant Air
Mon, Feb 16 - Fri, Feb 27
Allegiant Air Logo
10:31 pm - 11:19 pm
IDA
-
LAS
1h 48mnonstop
Allegiant Air Logo
12:45 pm - 3:30 pm
LAS
-
IDA
1h 45mnonstop
$107Allegiant Air
Fri, Jan 30 - Mon, Feb 2
Allegiant Air Logo
9:20 pm - 10:07 pm
IDA
-
LAS
1h 47mnonstop
Allegiant Air Logo
11:23 am - 2:19 pm
LAS
-
IDA
1h 56mnonstop
$130Allegiant Air
Fri, Jan 30 - Mon, Feb 2
Allegiant Air Logo
9:20 pm - 10:07 pm
IDA
-
LAS
1h 47mnonstop
Allegiant Air Logo
11:23 am - 2:19 pm
LAS
-
IDA
1h 56mnonstop
$139Allegiant Air
Fri, Mar 6 - Mon, Mar 9
Allegiant Air Logo
10:30 pm - 11:16 pm
IDA
-
LAS
1h 46mnonstop
Allegiant Air Logo
12:45 pm - 3:31 pm
LAS
-
IDA
1h 46mnonstop
$144Allegiant Air
Mon, May 25 - Fri, May 29
Allegiant Air Logo
7:48 pm - 8:31 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
10:15 am - 1:00 pm
LAS
-
IDA
1h 45mnonstop
$154Allegiant Air
Fri, Apr 3 - Mon, Apr 6
Allegiant Air Logo
10:06 pm - 10:47 pm
IDA
-
LAS
1h 41mnonstop
Allegiant Air Logo
12:27 pm - 3:12 pm
LAS
-
IDA
1h 45mnonstop
$155Allegiant Air
Fri, Feb 6 - Mon, Feb 9
Allegiant Air Logo
9:20 pm - 10:07 pm
IDA
-
LAS
1h 47mnonstop
Allegiant Air Logo
11:23 am - 2:19 pm
LAS
-
IDA
1h 56mnonstop
$168Allegiant Air
Fri, Jun 12 - Mon, Jun 15
Allegiant Air Logo
7:39 pm - 8:22 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
10:05 am - 12:51 pm
LAS
-
IDA
1h 46mnonstop
$169Allegiant 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.

Find cheap flights to Las Vegas
Find cheap flights to Las Vegas

Planning a trip from Idaho Falls to Las Vegas? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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 Tuesday, and avoid Wednesdays 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 June, where tickets cost $116 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $269 and $259 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 4 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$71
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 55% 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.

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

    In the last 3 days, the lowest price for a flight from Idaho Falls to Las Vegas was $71 for a one-way ticket and $90 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 $418 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $334 and an overall rating of 7.9.

  • 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 $121 or less one-way and $127 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.
8.0
Alaska AirlinesOverall score based on 11737 reviews
7.0Entertainment
8.5Crew
7.8Comfort
7.1Food
8.1Boarding
Airline reviews

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

10.0 ExcellentAnonymous, Jan 2026
BOI - SAN
Read more Alaska Airlines reviews

I enjoyed the Starlink access but didn't have much time to use it. It also kept dropping me so I gave up. The food was very good though when I asked for a different "dessert" they didn't have anything. Chocolate Brownie Cookies are not suitable for everyone...maybe children. The flight staff were amazing - at least in First Class! My first time ever! The trip from Boise to San Diego was FAR better than going to Boise.

From Las Vegas to Boise all went well. However, our flight was delayed in Boise and I missed my connecting flight from Seattle to Pasco. Moreover, the last flight to Pasco was full and I was booked on the 11:30 flight Sunday and given a hotel accommodation. However, I was scheduled to deliver the Sunday morning service at my church and needed to arrive no later than 10:00. Therefore, I booked a Delta flight scheduled to arrive in Pasco at 23:09. My piece of luggage checked in Las Vegas arrived in Pasco earlier today. I waited at the airport for over an hour last night to speak with an Alaska agent to no avail. I went back after church this morning in search of my piece of luggage and it could not be located. After waiting for 40 minutes to speak to the agent authorized to take my claim, he announced that he was closing the counter to assist on the flight line but not before providing me with a telephone number that would help me with filing my claim. Before I was able to make the call (due to other factors) I received a call from Alaska agent informing me that my luggage had just arrived and I am now waiting for it to be delivered. I deliberately took the more complicated route home to ensure that I would be home in plenty of time to prepare for myself for the Sunday service and accommodate my relatives’ needs. I believe the airport is undermanned given the number of flights coming in and going out. It was fiasco last night with three flights waiting for luggage and another flight landing within minutes. Today’s problems stemmed from a lack of cross training and a serious amount of cargo/baggage going out and too few people scheduled to cover.

It was ok. First time flying with them to Boise Won’t do again

Our late returning flight was annoying. The plane was small, but it made boarding and disembarking quicker. I do wish they offered a gluten free snack.

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.

I was standing in line to use the restroom. A First Class passenger wanted to use the restroom after me, but Jaques made me wait on Flight 3418 from BOI to SJC on December 12, 2025. I felt this was inappropriate and rude.

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.

Both of my planes were delayed which is less than ideal but it's alright, unsurprising with very small flights.

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

No in flight service, no explanation - FC got service, C+ did not, unsure about Economy. No turbulence to speak of, so I guess another way to cut cost, or promote health and well being of Delta employees? Also, boarding in MEM combined zones, and with overhead space already full on both flights after Zone 2/ Diamond, presents a huge challenge to find a space for a bag. Delta, other than point A to B, is no longer reasonable to fly - very poor experiences, not even taking into account the chastising at the gate and rude crews, across the board.

It would have been better if the flight wasn't delayed by 2.5 hours

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Delta flight Delay for ,more that two hours i.e original flight was 6.30 PM and it starts at 8.45 PM, When we connect Delta team for meal vouchers as it is late arrival in designation,But we did not get it as per delta policy , which is not good for mid night arrival,

Inexperienced boarding crew allowed too many bags on to a full flight and delayed takeoff causing a missed connection and unplanned overnight stay. There was a hotel at the airport but Delta would not pay for it offering only to shuttle me to an area hotel. Never even offerred so much as an apology by anyone working for Delta.

Staff was great! Kind and cordial! Middle seat row 28 seat B has a hump in it. Trays were getting stuck when putting down and up. Good flight

Departure was delayed resulting in me missing my connection. Delta did not autimatically find me another flight.

The seats weren’t reclining even though it wasn’t as exit seat

It was good because we traveled without luggage, carry on only.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

Delayed, toilets did not flush, pilot parked to far away from Gate

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

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

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

The seat cushions were very worn so they were extremely uncomfortable.

Delayed, no updates, had a rewards number but was not working

The seats from lax to DFW was so tight that I could not move my legs . No WiFi and had to pay . Not a good selection of entertainment

AA should improve their in air internet & entertainment options. Seems unreasonable to charge $20/hr and should have some form of free connections. The entertainment options are also pretty limited, movies are outdated and the series only show 3-5 episodes.

We were upgraded to First Class and it was a great flight

Amazing I love American. I’ll never fly anyone else if I can help it.

I love American. I’ll never fly anyone else if I can help it.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

Little warm on the plane and delayed for an hour

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

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.

The crew was great and the flight was very smooth. Can’t really judge food since I did not get any because it costs money. The seat was comfortable for what we bought. Thanks!

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

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

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

Information on your arrival and departure airports