IDA - LAS

$54 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 8/17. 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: $163-$89
Allegiant Air
Mon 7/27Fri 7/31
IDA - LAS • Non-stop
Cheapest one-way
$54
Typical prices: $120-$275
Allegiant Air
Mon 8/17
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 3 weeks in advance save around 26% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 37% 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, Jul 27 - 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
$89Allegiant Air
Mon, Aug 10 - Mon, Aug 31
Allegiant Air Logo
10:54 pm - 11:37 pm
IDA
-
LAS
1h 43mnonstop
Allegiant Air Logo
11:00 am - 1:47 pm
LAS
-
IDA
1h 47mnonstop
$93Allegiant Air
Mon, Jul 20 - Fri, Jul 24
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 3 - Mon, Jul 6
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
$98Allegiant Air
Fri, Jul 3 - Mon, Jul 6
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, Jun 19 - Mon, Jun 22
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
$105Allegiant Air
Fri, Jun 19 - Fri, Jun 26
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
$109Allegiant Air
Fri, Jun 19 - Mon, Jun 22
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
$114Allegiant Air
Mon, Jun 15 - Fri, Jun 19
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
$116Allegiant 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
$118Allegiant 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 July.

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 August, where tickets cost $106 (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 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$54
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 54% 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 5 days, the lowest price for a flight from Idaho Falls to Las Vegas was $54 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 $375 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 $83 or less one-way and $101 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 12468 reviews
7.8Comfort
7.0Entertainment
7.1Food
8.5Crew
8.1Boarding
Airline reviews

Flight got delayed like 5 times, then they put and ada passenger in the back of the plane.

2.0 MediocreR, May 2026
SAN - RNO
Read more Alaska Airlines reviews

Flight got delayed like 5 times, then they put and ada passenger in the back of the plane.

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

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.

Connection flights should be spaced out farther because too close I missed my connection.

Definitely a southern flavor. Cordiality was evident even though no drinks or snacks were served.

On time! There were plenty of airport employees who were able to keep us moving in the right direction. The crew on the plane were professional.

Left /arrived on time. Decent seat space. Like the wifi/plugs and entertainment. Windows and tray table were kinda gross. Attendants didn't start snack service til 40mins before landing. Two rows before us, captain came on to say there's turbulence and recalled staff to seats. So, no drink/snack. Later, attendants didn't stop to see if we had trash nor even look our way. Felt invisible! Almost all pilot announcements were not only unintelligible, but so quiet. We had no idea what she said.

Average seat comfort, a drink and chips were provided, early boarding because we checked a carryon at the gate was nice. Ticket pricing shenanigans, including fees to pick a seat, check a bag, and get food onboard - evidence the industry is reinvigorating last century’s strategies- destroys the experience before one ever arrives at the airport. It’s difficult to recognize any value or sustain loyalty in the end-to-end process making air travel more drudgery than pleasure.

Gate agent was unhelpful for handicapped boarding. Flight attendant seemed untrained.

No service flight that took 5 hrs and a stop at an unscheduled airport. Crew and pilots did their jobs

Clean planes and not take my comfort class seat away.

Weather caused a long delay, but the efficiency and updates from the pilot were helpful. We were able to make our connection fortunately.

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.

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Boarded early, left early, arrived 40 mins early! A win win for me!

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

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.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

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.

Flight was delayed. Crew was good but hot coffee was not available.

Great. No choice for n/a. No food or entertainment options

No food is available without purchasing it and there is no in-flight entertainment. Both of these are OK because we got an inexpensive flight from Allegiant and, otherwise, our experience was excellent.

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.

Our flight was repeatedly delayed for maintenance problems: scheduled for 9.30am, eventually delayed to 7pm! Very very inconvenient! AA should have provided a substitute plane much earlier.. On the other hand, Customer Service crew in Charlotte helped us to reach NY (LGA) by late afternoon. Thank you Patricia!! The actual flight was quick and very comfortable. As always a. excellent, professional crew. [no food on a a short hop).

Take-off delayed an hour because of a missing flight officer, so,arrived in Charlotte lates causing many passengers to miss connections. Otherwise a very good flight, safe and comfortable, with an excellent professional crew.

Little time between flight from Dallas to flight to Gainesville. We chose this one, 43 minutes between, because the price for a connection with at least an hour between, was so much higher. Had to ask passengers on the Dallas flight to please allow us to deplane ahead of them. The economy passengers allowed this. We had to walk very fast to the next gate, 35 gates away. Thankfully all in the same terminal. Getting to the small Gainesville plane was a little confusing as you enter an area that is boarding many small planes at the same time. We stood in the wrong line for about 15 seconds before realizing it was not our Gainesville flight. Since I had boarded at this gate in the past, I knew to check the signs carefully so we weren’t lost. The first class seat experience was wonderful. I really enjoyed the upgrade. We were offered an alcohol drink as soon as we sat down. I got something different but it was a great gesture especially since we really had to hurry to make the flight. We had packed expecting we might miss this connection, but made it. Our luggage didn’t miss the flight. American Airlines delivered our bags to our home the next day. That was very convenient!

The plane was large, not full, but one with 3 seats near each window and 4 in a row in the middle of the plane. There were screens on the backs of the seats for entertainment and information. To use the entertainment one needs ear plugs that physically plug into the screen. My husband had some he let me use as I only had blue tooth type. The stewards gave out some headphones to some, but when my neighbor asked for some, the steward said no. So maybe they ran out? Idk. Bring the old kind of headphones or earbuds if you want entertainment in case this is the type of entertainment offered. We had a very tight connection in Miami. 43 minutes. The other economy passengers allowed us to get ahead of them because I asked if we could since we were near boarding time for our next flight and 35 gates away. They were extremely kind. First class wasn’t going to allow us to pass through. We did make the next flight. Our baggage didn’t, but they were delivered to us the next day and we were prepared with essentials in our carry on packs.

Food is what you expect on a plane. Nothing gluten free. But that is expected. Drinks, apple juice, was fine. Seat, what I expected. Fine.

Everything went as planned. The only issue I had was with the gate C31 attendant. The person could barely speak English and was very difficult to understand.

The flight took off an hour late which made the connection concerning

The flight from LA to Chicago was smooth and service was very good overall.

The flight from Dallas to Tokyo was not on Japan Airlines. It was on American Airlines. Very disappointed that we did not fly on Japan Airlines. Will not be using you liars again. I’ll just book direct from the airline next time. Wish you could make this right and has us fly on Japan Air when heading back home to the US.

The Mario was so helpful and provided amazing customer service however l have being waiting for a callback for almost a week now and have not heard anything further after l informed them l wanted to change my date of traveling because of my hospital appointment even send them proof and l was unable to use manag your booking on their website is a bit frustrating and l would appreciate an update on My request as soon as possible. And have called them times without numbers no response

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

Information on your arrival and departure airports