LAS - IDA

$66 Find Cheap Flights from Las Vegas to Idaho Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Las Vegas to Idaho Falls departing on 9/26. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Las Vegas to Idaho Falls, 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 Las Vegas to Idaho Falls, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

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

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

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

Fri, Oct 3 - Mon, Oct 6
Allegiant Air Logo
1:25 pm - 4:14 pmLAS-IDA
1h 49mnonstop
Allegiant Air Logo
7:40 pm - 8:23 pmIDA-LAS
1h 43mnonstop
$104Allegiant Air
Find Deal
Fri, Oct 3 - Fri, Nov 14
Allegiant Air Logo
1:25 pm - 4:14 pmLAS-IDA
1h 49mnonstop
Allegiant Air Logo
10:56 pm - 11:38 pmIDA-LAS
1h 42mnonstop
$118Allegiant Air
Find Deal
Fri, Oct 31 - Mon, Nov 3
Multiple Airlines Logo
1:25 pm - 4:14 pmLAS-IDA
1h 49mnonstop
Multiple Airlines Logo
2:51 pm - 9:24 pmIDA-LAS
7h 33m1 stop
$196Multiple Airlines
Find Deal
Fri, Oct 3 - Fri, Nov 14
Multiple Airlines Logo
1:25 pm - 4:14 pmLAS-IDA
1h 49mnonstop
Multiple Airlines Logo
4:58 pm - 8:38 amIDA-LAS
16h 40m1 stop
$199Multiple Airlines
Find Deal
Fri, Oct 31 - Mon, Nov 3
Multiple Airlines Logo
7:00 am - 10:12 pmLAS-IDA
14h 12m2 stops
Multiple Airlines Logo
8:52 pm - 9:35 pmIDA-LAS
1h 43mnonstop
$204Multiple Airlines
Find Deal
Wed, Dec 24 - Thu, Dec 25
United Airlines Logo
4:23 pm - 10:57 pmLAS-IDA
5h 34m1 stop
United Airlines Logo
5:00 am - 9:15 amIDA-LAS
5h 15m1 stop
$261United Airlines
Find Deal
Thu, Nov 20 - Fri, Nov 28
American Airlines Logo
3:58 pm - 10:34 pmLAS-IDA
5h 36m1 stop
American Airlines Logo
7:10 am - 12:41 pmIDA-LAS
6h 31m1 stop
$300American Airlines
Find Deal
Fri, Oct 3 - Mon, Oct 6
United Airlines Logo
9:46 am - 5:15 pmLAS-IDA
6h 29m1 stop
United Airlines Logo
5:56 pm - 9:47 pmIDA-LAS
4h 51m1 stop
$390United Airlines
Find Deal
Fri, Oct 31 - Mon, Nov 3
American Airlines Logo
9:49 am - 9:33 pmLAS-IDA
10h 44m2 stops
American Airlines Logo
7:10 am - 12:41 pmIDA-LAS
6h 31m1 stop
$493American Airlines
Find Deal
Fri, Oct 31 - Mon, Nov 3
Delta Logo
1:57 pm - 10:15 pmLAS-IDA
7h 18m2 stops
Delta Logo
1:15 pm - 11:22 pmIDA-LAS
11h 07m2 stops
$1,426Delta
Find Deal

Everything you should know

Top airlines
Allegiant Air
Cheapest • from $104 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
May
Cheapest • 31% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
4 days a week
There are direct flights from Las Vegas to Idaho Falls 4 days a week: Mon, Wed, Fri, Sun.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest round-trip
$104
Overall average: $125
Allegiant Air
Fri 10/3Mon 10/6
LAS - IDA • Non-stop
Cheapest one-way
$66
Typical prices: $64-364
Allegiant Air
Fri 9/26
LAS - IDA • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Idaho Falls!
Booking Insights

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

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

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

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

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

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

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

The cheapest month for flights from Las Vegas to Idaho Falls is May, where tickets cost $111 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $281 and $202 respectively.

Good to know

Low seasonNovember
Cheapest flight$66
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly and prices are also 23% lower on average.
Flight from Las Vegas to Idaho Falls

When to book flights from Las Vegas to Idaho Falls

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

FAQs for booking flights from Las Vegas to Idaho Falls

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

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

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

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

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

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

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

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

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

    In the last 3 days, the lowest price for a flight from Las Vegas to Idaho Falls was $66 for a one-way ticket and $104 for a round-trip.

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

    No

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Las Vegas to Idaho Falls are Delta and Allegiant Air. With an average price for the route of $310 and an overall rating of 7.9, Delta is the most popular choice. Allegiant Air is also a great choice for the route, with an average price of $125 and an overall rating of 7.2.

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

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

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

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

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

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

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

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

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $77 or less one-way and $110 or less round-trip.
  • Most business travelers choose Idaho Falls Regional Airport (IDA) as their arrival airport when flying from Las Vegas to Idaho Falls. IDA is strategically located in Idaho Falls, which serves as a regional economic hub. Its proximity to businesses, industries, and corporate offices makes it a convenient choice for business travelers. It allows quick access to the city's commercial and industrial areas, reducing travel time and enhancing productivity.
  • Consider flying with Alaska Airlines, United Airlines, or Delta if you want a chance to upgrade to a first-class cabin from business, or economy class from Las Vegas (LAS) to Idaho Falls (IDA). These airlines give their customers the opportunity to request an upgrade either at check-in or during the ticketing process utilizing a special bidding mechanism.
  • The majority of environmentalists choose to fly out of Harry Reid International Airport (LAS) when flying from Las Vegas to Idaho Falls. This can be attributed to steps taken by LAS Airport to improve energy efficiency, including the creation of energy-efficient lighting systems, the use of natural lighting, as well as the adoption of energy-management techniques that help reduce greenhouse gas emissions.
  • Consider choosing Delta Air Lines, United Airlines, or American Airlines if you wish to travel from Las Vegas to Idaho Falls with your children. These airlines provide their passengers complimentary in-flight Wi-Fi connections to enable them access to a variety of kid-friendly entertainment alternatives, including streaming musical albums, cartoons, and movies.
  • Consider sleeping the night before your trip near to LAS if you're hoping to catch the first flight from Las Vegas to Idaho Falls. Because of its proximity to LAS, Best Western Mccarran Inn makes a convenient choice for a hotel.

Prefer to fly direct from Las Vegas to Idaho Falls?

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

Direct departures

Las Vegas Harry Reid Intl to Idaho Falls Fanning Field

Monday

Allegiant Air

Allegiant Air

Wednesday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Idaho Falls Fanning Field to Las Vegas Harry Reid Intl

Monday

Allegiant Air

Allegiant Air

Wednesday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

Sunday

Allegiant Air

Allegiant Air

See more direct flights

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

 
See real verified KAYAK customer reviews for airlines flying from Las Vegas to Idaho Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Las Vegas to Idaho Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7957 reviews
8.2Boarding
8.5Crew
7.9Entertainment
7.9Comfort
7.3Food
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

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.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

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.

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.

They did not let my husband on the plane with our service animal at the last minute. Do NOT fly this airline with a service animal!

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

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

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.