IDA - LAS

$51 Find Cheap Flights from Idaho Falls to Las Vegas - Compare and Save

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Everything you should know

Cheapest round-trip
$87
Typical prices: $133-$294
Allegiant Air
Fri 10/26Fri 11/2
IDA - LAS • Non-stop
Cheapest one-way
$51
Typical prices: $94-$260
Allegiant Air
Fri 8/31
IDA - LAS • Non-stop
Nonstop flights
You can fly direct with Allegiant Air. Average duration is 1h 45m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 42% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 28% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $356 (round-trip)
Shortest trip • 4h 07m (one-way)
Insights
Insights
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Flight Deals

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

 
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, Oct 26 - Mon, Nov 2
Allegiant Air Logo
7:30 pm - 8:14 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
1h 44mnonstop
Allegiant Air Logo
9:48 am - 12:36 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 48mnonstop
$87Allegiant Air
Mon, Sep 21 - Fri, Sep 25
Allegiant Air Logo
6:21 pm - 7:06 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
1h 45mnonstop
Allegiant Air Logo
9:09 am - 11:58 amLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
$88Allegiant Air
Mon, Sep 21 - Fri, Sep 25
Multiple Airlines Logo
7:30 pm - 9:51 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
27h 21m1 stop Phoenix-Mesa Gateway
Multiple Airlines Logo
9:09 am - 11:58 amLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
$159Multiple Airlines
Mon, Oct 26 - Mon, Nov 2
Multiple Airlines Logo
6:30 pm - 7:09 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
25h 39m1 stop Phoenix-Mesa Gateway
Multiple Airlines Logo
9:48 am - 12:36 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
1h 48mnonstop
$174Multiple Airlines
Sat, Oct 17 - Sat, Oct 17
Alaska Airlines Logo
6:09 am - 1:25 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
8h 16m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
3:56 pm - 10:59 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
6h 03m1 stop Seattle/Tacoma Intl
$295Alaska Airlines
Fri, Jan 29 - Mon, Feb 1
Delta Logo
6:00 am - 8:56 amIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
3h 56m1 stop Salt Lake City
Delta Logo
5:30 pm - 10:19 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
3h 49m1 stop Salt Lake City
$301Delta
Sun, Sep 13 - Thu, Sep 17
Delta Logo
1:05 pm - 4:02 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
3h 57m1 stop Salt Lake City
Delta Logo
5:10 pm - 10:22 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
4h 12m1 stop Salt Lake City
$301Delta
Thu, Oct 22 - Fri, Oct 23
United Airlines Logo
4:05 pm - 8:56 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
5h 51m1 stop Denver Intl
United Airlines Logo
5:15 am - 1:24 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
7h 09m1 stop Denver Intl
$301United Airlines
Fri, Oct 2 - Sat, Oct 3
United Airlines Logo
4:05 pm - 9:59 pmIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
6h 54m1 stop Denver Intl
United Airlines Logo
5:15 am - 1:24 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
7h 09m1 stop Denver Intl
$301United Airlines
Tue, Sep 15 - Wed, Sep 16
Alaska Airlines Logo
6:18 am - 10:59 amIDA  Idaho Falls Fanning Field-LAS Las Vegas Harry Reid Intl
5h 41m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:25 pm - 10:56 pmLAS  Las Vegas Harry Reid Intl-IDA Idaho Falls Fanning Field
8h 31m1 stop Seattle/Tacoma Intl
$301Alaska Airlines
Booking Insights

Price, demand and travel trends for Idaho Falls to Las Vegas flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Idaho Falls to Las Vegas with more confidence.

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

Round-trip flights from Idaho Falls to Las Vegas start at $87. Prices are below average for this route right now, with typical round-trip fares ranging from $133 to $294. The lowest price found in the past 5 days was $87 on Allegiant Air.

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

Monday is the cheapest day of the week to fly from Idaho Falls to Las Vegas, it is 39% cheaper than the average day. Sunday is the most expensive day with flight prices 137% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • January is the cheapest month to fly from Idaho Falls to Las Vegas at $137 round-trip.
  • December ($277) and February ($261) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 102% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Idaho Falls to Las Vegas the cheapest?

Flights from Idaho Falls to Las Vegas are cheapest 7 weeks before departure. Booking in this window typically costs about 42% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Idaho Falls to Las Vegas flights

Low season

August

Cheapest flight

$51
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 10% 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

Your Idaho Falls to Las Vegas flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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 airlines are available from Idaho Falls to Las Vegas?

    Only Allegiant Air operates flights between Idaho Falls and Las Vegas.

  • Which airports can I use when flying from Idaho Falls to Las Vegas?

    Flights from Idaho Falls to Las Vegas usually depart from Idaho Falls Fanning Field (IDA) and arrive at Las Vegas Harry Reid Intl (LAS).

  • What cabin classes can I book on flights from Idaho Falls to Las Vegas?

    Only Economy Class is available on flights from Idaho Falls to Las Vegas.

  • How much can I save by taking a layover when flying from Idaho Falls to Las Vegas?

    On this route, nonstop flights are cheaper than layover options on average. Nonstop fares average $157 round-trip, compared to $356 via a layover through Seattle/Tacoma Intl (SEA).

  • What is the standard checked-bag allowance on flights from Idaho Falls to Las Vegas?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $25–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Idaho Falls to Las Vegas?

    The Airbus A319 family is used most often on this route, operated mainly by Allegiant Air. Other aircraft seen on the route include Airbus A320-100/200 variants.

  • Which airports do connecting flights from Idaho Falls to Las Vegas pass through?

    One-stop flights from Idaho Falls to Las Vegas most commonly connect through:

    • Salt Lake City (SLC) - 42% of one-stop connections
    • Denver Intl (DEN) - 32% of one-stop connections
    • Phoenix Sky Harbor Intl (PHX) - 15% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 9% of one-stop connections

    Salt Lake City (SLC) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Idaho Falls to Las Vegas?

    Yes. Being flexible with your travel dates can save you up to 75% on the Idaho Falls to Las Vegas route. Monday is the cheapest departure day at $117 round-trip on average, while Sunday is the most expensive at $453, a difference of $336. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Las Vegas?

    Some of the most popular sights in Las Vegas are Fremont Street Experience, The Venetian and Las Vegas Convention Center. These are among the most viewed places in Las Vegas on KAYAK.

  • How long is a flight from Idaho Falls to Las Vegas?

    A nonstop flight from Idaho Falls to Las Vegas takes 1h 45m, covering 538 miles.

  • What are the earliest and latest flights from Idaho Falls to Las Vegas?

    These are the earliest and latest flight times available from Idaho Falls to Las Vegas:

    • Earliest: departs at 9:44 am and lands at 11:29 am
    • Latest: departs at 10:54 pm and lands at 12:39 am.

    The flight takes about 1h 45m.

  • How expensive are last-minute Idaho Falls to Las Vegas flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 29% above the route average of $191. Book 7 weeks before departure for the lowest fares.

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

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • How are flight prices from Idaho Falls to Las Vegas looking right now?

    One-way fares from Idaho Falls to Las Vegas are currently lower than usual. Average one-way flight prices are about $126, which is 17% below the typical average for this route.

  • How much time can I save by choosing a different layover airport from Idaho Falls to Las Vegas?

    Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 07m, compared with 5h 39m via Phoenix Sky Harbor Intl (PHX) and 5h 43m via Denver Intl (DEN).

  • What is the time difference between Idaho Falls and Las Vegas?

    Las Vegas is 1 hour behind Idaho Falls (Pacific Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Las Vegas Harry Reid Intl Airport (LAS)?

    Las Vegas Harry Reid Intl Airport (LAS) hosts 5 major car rental companies, with daily rates starting from around $8 for economy cars. Top options include:
    · Easirent
    · Ace
    · Fox
    · Dollar
    · Thrifty

  • How much should I expect to pay for a Idaho Falls to Las Vegas flight?

    Round-trip flights from Idaho Falls to Las Vegas range from $133 to $294, with an average of $191 over the past 12 months. Anything below $133 counts as a good deal.

Your guide to booking Idaho Falls to Las Vegas flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Monday departure instead of Sunday. On this route, Monday flights average $117 - about $336 less than Sunday (74% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 7 weeks before you fly. On this route, that window historically saves about 42% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Idaho Falls to Las Vegas trip for January. Fares historically average $137 round-trip in that month - typically $140 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Las Vegas Harry Reid Intl Airport.
    - Ellis Island Hotel
    - The Reserve at Park MGM
    - Silver Sevens Hotel and Casino, a Wyndam Garden
  • 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?

 
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

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

Information on your arrival and departure airports