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£111 Cheap Flights from Las Vegas (LAS) to Idaho Falls (IDA)

View £111 flight on Fri, 25 Sept 2026Opens in a new window

Popular airlines from Harry Reid Intl. Airport (LAS) to Idaho Falls Regional Airport (IDA)

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

Prices were available within the past 7 days and start at £111 for one-way flights and £270 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 26 Sept - Mon, 28 Sept
LAS
Las Vegas
IDA
Idaho Falls
£270 Return, found 6 days ago
£270
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 26 Sept from Las Vegas to Idaho Falls, returning Mon, 28 Sept, priced at £270 found 6 days ago
Alaska Airlines
Tue, 8 Jun - Fri, 11 Jun
LAS
Las Vegas
IDA
Idaho Falls
£276 Return, found 2 days ago
£276
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 8 Jun from Las Vegas to Idaho Falls, returning Fri, 11 Jun, priced at £276 found 2 days ago
Alaska Airlines
Fri, 11 Jun - Fri, 18 Jun
LAS
Las Vegas
IDA
Idaho Falls
£280 Return, found 2 hours ago
£280
Return
found 2 hours ago
Select Alaska Airlines flight, departing Fri, 11 Jun from Las Vegas to Idaho Falls, returning Fri, 18 Jun, priced at £280 found 2 hours ago
Alaska Airlines
Sat, 26 Sept - Mon, 28 Sept
LAS
Las Vegas
IDA
Idaho Falls
£285 Return, found 6 days ago
£285
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 26 Sept from Las Vegas to Idaho Falls, returning Mon, 28 Sept, priced at £285 found 6 days ago
Alaska Airlines
Tue, 8 Jun - Fri, 11 Jun
LAS
Las Vegas
IDA
Idaho Falls
£305 Return, found 2 days ago
£305
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 8 Jun from Las Vegas to Idaho Falls, returning Fri, 11 Jun, priced at £305 found 2 days ago
Alaska Airlines
Tue, 8 Jun - Fri, 11 Jun
LAS
Las Vegas
IDA
Idaho Falls
£306 Return, found 2 days ago
£306
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 8 Jun from Las Vegas to Idaho Falls, returning Fri, 11 Jun, priced at £306 found 2 days ago
Alaska Airlines
Fri, 11 Jun - Fri, 18 Jun
LAS
Las Vegas
IDA
Idaho Falls
£313 Return, found 2 hours ago
£313
Return
found 2 hours ago
Select Alaska Airlines flight, departing Fri, 11 Jun from Las Vegas to Idaho Falls, returning Fri, 18 Jun, priced at £313 found 2 hours ago
Alaska Airlines
Tue, 8 Jun - Fri, 11 Jun
LAS
Las Vegas
IDA
Idaho Falls
£315 Return, found 2 days ago
£315
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 8 Jun from Las Vegas to Idaho Falls, returning Fri, 11 Jun, priced at £315 found 2 days ago
Alaska Airlines
Fri, 11 Jun - Fri, 18 Jun
LAS
Las Vegas
IDA
Idaho Falls
£319 Return, found 2 hours ago
£319
Return
found 2 hours ago
Select Alaska Airlines flight, departing Fri, 11 Jun from Las Vegas to Idaho Falls, returning Fri, 18 Jun, priced at £319 found 2 hours ago
Alaska Airlines
Tue, 8 Jun - Fri, 11 Jun
LAS
Las Vegas
IDA
Idaho Falls
£335 Return, found 2 days ago
£335
Return
found 2 days ago
Select Alaska Airlines flight, departing Tue, 8 Jun from Las Vegas to Idaho Falls, returning Fri, 11 Jun, priced at £335 found 2 days ago

Find the cheapest month to fly from Las Vegas (LAS) to Idaho Falls (IDA)

December is typically the cheapest month to fly

From £70 - £481 per traveller.

Frequently asked questions

How much does a flight from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) cost?
You can find one-way and return flights from LAS to IDA with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when LAS to IDA ticket fares go up or down.
What is the cheapest month to fly from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
The cheapest months to fly from LAS to IDA are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
Enter LAS to IDA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
Delta is one of the cheapest airlines offering connecting return flights from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional), with tickets starting from around £282 for flights that can be booked for departure within the next year. These flights typically include a layover in Seattle - Tacoma Intl. (SEA). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
To find a cheap flight from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
There are approximately 18 connecting flights per day from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional). Some common connection points include Portland Intl. (PDX), Seattle - Tacoma Intl. (SEA), and San Diego Intl. (SAN).
What is the earliest flight from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
The earliest flight from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) typically departs around 12:55 AM. This service is operated by American Airlines. Please note that this is a seasonal service, active in April and May. An early departure like this can be great for maximising your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
You'll typically find the most flights from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) on a Thursday, with around 29 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, United, and Delta. Thursday offers notably more flight options compared to other days of the week, so it's a great day to consider for your journey.
What are the most popular departure times for flights from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
The most popular departure times for flights from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) are in the early morning, from 6am to 9am. Many major carriers, including Alaska Airlines, Delta and United, offer flights during this window. Many travellers prefer this time as it allows for an early start to their journey, getting them to their destination with plenty of time left in the day.
How long does it take to fly from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
There are no nonstop flights from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional). For flights with one stop, you can expect the journey to take around 7 hours, covering a distance of approximately 867 kilometers. Flights with two or more stops typically take longer, averaging about 9 hours 30 minutes. Keep in mind that these are average times, and your actual travel duration can vary depending on the specific routing, layover times, and even weather conditions.
Can you fly business or first class from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
You can fly business class or first class between LAS and IDA. Airlines that offer business class service on this route include:
  • Alaska Airlines
  • United
  • Delta
  • American Airlines
First class cabins are available on:
  • Alaska Airlines
  • United
  • Delta
  • American Airlines
How do I earn miles on a Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight with Expedia?
It's easy to earn miles on a Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Idaho Falls, ID (IDA) from Las Vegas, NV (LAS)?
If you're planning to travel to Idaho Falls from Harry Reid International Airport (LAS), you can fly directly into Idaho Falls Regional (IDA). Some flights may connect through major hubs like Los Angeles Intl. (LAX), Portland Intl. (PDX), or San Diego Intl. (SAN) before reaching Idaho Falls. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) at the last minute?
Typically, booking a last minute flight from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight and hotel package?
Securing a Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional)?
If you booked your Las Vegas, NV (LAS-Harry Reid Intl.) to Idaho Falls, ID (IDA-Idaho Falls Regional) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Harry Reid Intl.
Destination airport
Idaho Falls Regional
Roundtrip price
£269
Distance
861 km
Average flight time
1 hour 47 mins

Book with confidence

Compare flights from Las Vegas to Idaho Falls easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Las Vegas to Idaho Falls. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Idaho Falls Regional in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Harry Reid Intl. to Idaho Falls Regional.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Harry Reid Intl. (LAS) to Idaho Falls Regional (IDA)

The easiest way to view the best deals on flights from Las Vegas to Idaho Falls today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Harry Reid Intl. to Idaho Falls Regional start at just £270 and range up to £335.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Las Vegas and Idaho Falls
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Las Vegas to Idaho Falls flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Harry Reid Intl. to Idaho Falls Regional for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Las Vegas to Idaho Falls easily and book with confidence

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*Available to Expedia members.