IDA - LAS

$45 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 4/27. 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: $188-$92
Allegiant Air
Mon 6/22Mon 7/6
IDA - LAS • Non-stop
Cheapest non-stop
$89
Typical prices: $248-$143
Allegiant Air
Mon 4/27Fri 5/1
IDA - LAS • Non-stop
Nonstop flights
Mon, Fri
You can fly direct with Allegiant Air. Average duration is 1h 41m
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 3 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 34% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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, Jun 22 - Mon, Jul 6
Allegiant Air Logo
10:56 pm - 11:39 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:12 pm - 4:00 pm
LAS
-
IDA
1h 48mnonstop
$89Allegiant Air
Mon, May 18 - Mon, Jun 8
Allegiant Air Logo
10:21 pm - 11:02 pm
IDA
-
LAS
1h 41mnonstop
Allegiant Air Logo
1:22 pm - 4:08 pm
LAS
-
IDA
1h 46mnonstop
$91Allegiant Air
Mon, May 11 - Fri, May 15
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
$93Allegiant Air
Fri, Jun 5 - Fri, Jun 12
Allegiant Air Logo
10:56 pm - 11:39 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:22 pm - 4:08 pm
LAS
-
IDA
1h 46mnonstop
$94Allegiant Air
Fri, Jun 5 - Mon, Jun 8
Allegiant Air Logo
10:56 pm - 11:39 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:22 pm - 4:08 pm
LAS
-
IDA
1h 46mnonstop
$96Allegiant Air
Mon, May 18 - Fri, May 22
Allegiant Air Logo
10:21 pm - 11:02 pm
IDA
-
LAS
1h 41mnonstop
Allegiant Air Logo
10:15 am - 1:00 pm
LAS
-
IDA
1h 45mnonstop
$97Allegiant Air
Fri, Jun 5 - Fri, Jun 12
Allegiant Air Logo
10:56 pm - 11:39 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
1:22 pm - 4:08 pm
LAS
-
IDA
1h 46mnonstop
$98Allegiant Air
Mon, May 4 - Fri, May 8
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
$101Allegiant Air
Mon, May 4 - Fri, May 8
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
$106Allegiant Air
Fri, May 29 - Mon, Jun 1
Allegiant Air Logo
5:38 pm - 6:21 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
7:25 am - 10:10 am
LAS
-
IDA
1h 45mnonstop
$108Allegiant 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 June.

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 Mondays 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 $113 (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 $261 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 3 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$45
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 10% lower on average.
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 $45 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, Delta or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Las Vegas are Delta and Alaska Airlines. With an average price for the route of $350 and an overall rating of 7.9, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $330 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 $76 or less one-way and $112 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 12263 reviews
7.8Comfort
8.1Boarding
8.5Crew
7.0Food
7.0Entertainment
Airline reviews

Flight was cancelled which destroyed the rest of our journey.

2.0 MediocreWilliam, Apr 2026
BOI - SEA
Read more Alaska Airlines reviews

Flight was cancelled which destroyed the rest of our journey.

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

WOuld have liked coffee or pretzels but other than that, crew and pilot and flight were great. Seat was great, too.

The overhead storage was already packed full when I boarded (I fly peasant class), but the attendant played some Tetris and made a spot for my small suitcase. Thanks!

Snacks for our toddler could have been better, front the standpoint of variety but that’s not any different from other airlines.

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

I fell asleep and missed my flight and they rescheduled me no problem. Staff was professional and the plane was clean. I was very happy with my experience.

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.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

Landed without a gate ready. Plane is extremely old and dirty.

All the amenities was wonderful, if they could keep their prices that low. I'd fly with them all the time.

Very old plane with no inflight entertainment. I purchased the internet pass and it was nearly unusable.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Short trip, no food and therefore no expectation for much interaction with staff who were pleasant and professional. My critique is on comfort of the seats. Exit rows and comfort seats do not provide enough personal space for 3 side-by-side seats, especially when in the middle row. Some passengers are not considerate of the middle seat and there should be signs that state something to the effect of: "please consider giving middle seats use of the armrests."

My flight yesterday evening was delayed 3.5 hours with no water or food service. Poor experience

Transparency from pilots, quick boarding and exiting the plane, staff greeted to each and everyone,

Didn't like sitting on the waiting pad for 30 minutes right after departing the gate. If you're going to do that, just don't board so people can still get up and walk around in the terminal. My luggage was damaged by the baggage handlers.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

My bags were misplaced!!! Im in a foreign country with no bags

The entertainment options on the seat back video boards were nice.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

just had water and there was plenty of leg & seat room. But then i don't weight 220#s!!

Not totally their fault- screaming kids that had zero parent intervention.

It was cold on the flight. The crew was very pleasant. I didn't order any food. We were delayed due to Captain waiting on maintenance log. He kept us informed though. The flight itself was smooth. I would definitely fly with Allegiant again!

I had a fantastic experience with Allegiant. I had wheelchair assistance and they helped me find my luggage and brought me to my car. Even loaded my luggage. Wonderful service!! Thank you Allegiant!

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

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.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

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.

Flight: Started on time. Comfortable flight. Arrived on time. Crew: Very cordial and helpful. Drinks and snack was served with a smile. Overall enjoyed the trip. Regards, Hari Doss Chanchala Doss

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

It was really a terrific experience both going and returning on AA. Staff and crew were professional.

Flights on time w/o delays. However, my baggage was damaged. Ground crew, throws baggage from plane to the baggage carrier, carelessly.

This short sector between Miami and JFK was undertaken purely for business purposes, with efficiency as the primary objective rather than a full inflight experience. Overall, the journey met its intended purpose; however, the ground experience at Miami stood out significantly. During check-in, I was unable to link my frequent flyer details from Qatar Airways (oneworld alliance) through either the self-service kiosk or web check-in. The situation was handled exceptionally well by the check-in agent, who demonstrated remarkable ownership. She coordinated across multiple counters, ensured my frequent flyer number was correctly reflected, reissued the boarding pass, and confirmed that mileage accrual would be recognized. Additionally, she ensured the boarding pass reflected priority status, enabling a seamless priority check-in experience without delays. This level of proactive service was both commendable and impactful. Boarding and the inflight experience, operated by American Airlines under a codeshare arrangement, were efficient but largely transactional. While operational delivery was smooth, there was no visible recognition of oneworld frequent flyer status onboard. In comparison to the consistently personalized engagement typically experienced with Qatar Airways, this absence was noticeable—though understandably a potential limitation of codeshare alignment rather than a direct service shortfall. In summary, while the flight itself fulfilled its operational intent, the exceptional professionalism and commitment demonstrated at the Miami check-in counter was the defining highlight of this journey. Greater consistency in elite recognition across partner airlines would further enhance the overall experience.

I was able to get the AA customer Service desk to put me on an earlier flight without any issues.

The seat was comfortable, the attendants were very nice and WiFi made my life so much easier with work. Kudos!

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

To have arrived on time and not 3 hours late after having already spent $100 to change to an earlier flight, only to arrive back home close to the original flight time.

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

Information on your arrival and departure airports