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

View £111 flight on Tue, 16 Jun 2026Opens in a new window

Flight 1

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

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

Prices were available within the past 7 days and start at £111 for one-way flights and £233 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
IDA
Idaho Falls
LAS
Las Vegas
£233 Return, found 4 hours ago
£233
Return
found 4 hours ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Idaho Falls to Las Vegas, returning Tue, 23 Jun, priced at £233 found 4 hours ago
Alaska Airlines
Sat, 13 Jun - Sat, 20 Jun
IDA
Idaho Falls
LAS
Las Vegas
£244 Return, found 4 hours ago
£244
Return
found 4 hours ago
Select Alaska Airlines flight, departing Sat, 13 Jun from Idaho Falls to Las Vegas, returning Sat, 20 Jun, priced at £244 found 4 hours ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
IDA
Idaho Falls
LAS
Las Vegas
£262 Return, found 4 hours ago
£262
Return
found 4 hours ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Idaho Falls to Las Vegas, returning Tue, 23 Jun, priced at £262 found 4 hours ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
IDA
Idaho Falls
LAS
Las Vegas
£263 Return, found 4 hours ago
£263
Return
found 4 hours ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Idaho Falls to Las Vegas, returning Tue, 23 Jun, priced at £263 found 4 hours ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
IDA
Idaho Falls
LAS
Las Vegas
£274 Return, found 4 hours ago
£274
Return
found 4 hours ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Idaho Falls to Las Vegas, returning Tue, 23 Jun, priced at £274 found 4 hours ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
IDA
Idaho Falls
LAS
Las Vegas
£292 Return, found 4 hours ago
£292
Return
found 4 hours ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Idaho Falls to Las Vegas, returning Tue, 23 Jun, priced at £292 found 4 hours ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
IDA
Idaho Falls
LAS
Las Vegas
£298 Return, found 4 hours ago
£298
Return
found 4 hours ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Idaho Falls to Las Vegas, returning Tue, 23 Jun, priced at £298 found 4 hours ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
IDA
Idaho Falls
LAS
Las Vegas
£303 Return, found 4 hours ago
£303
Return
found 4 hours ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Idaho Falls to Las Vegas, returning Tue, 23 Jun, priced at £303 found 4 hours ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
IDA
Idaho Falls
LAS
Las Vegas
£304 Return, found 4 hours ago
£304
Return
found 4 hours ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Idaho Falls to Las Vegas, returning Tue, 23 Jun, priced at £304 found 4 hours ago
Alaska Airlines
Mon, 8 Jun - Fri, 12 Jun
IDA
Idaho Falls
LAS
Las Vegas
£305 Return, found 1 day ago
£305
Return
found 1 day ago
Select Alaska Airlines flight, departing Mon, 8 Jun from Idaho Falls to Las Vegas, returning Fri, 12 Jun, priced at £305 found 1 day ago

Frequently asked questions

How much does a flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.) cost?
One-way flights typically cost between £341 and £750 and return flights often range between £341 and £750. 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 the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
February is typically the cheapest month to fly from Idaho Falls Regional (IDA) to Harry Reid Intl. (LAS), with average return fares of approximately £525. This is about 14% lower than the average price throughout the year. February often sees lower prices as it's outside of peak holiday travel periods. Other cheap months to fly from Idaho Falls Regional (IDA) to Harry Reid Intl. (LAS) include August and November.
How do I find cheap flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
To find a cheap flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.), 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
The best time to fly from Idaho Falls Regional (IDA) to Harry Reid Intl. (LAS) depends on what you're looking for. Based on booking data from the past year, the cheapest months to fly are typically February and August, with average return flights around £525. However, if you prefer more flight options and a livelier atmosphere, December and April are the most popular months for this route, offering plenty of choices for your travel plans.
How many flights per day from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
There are approximately 11 connecting flights per day from Idaho Falls Regional (IDA) to Harry Reid Intl. (LAS). Some common connection points include Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN), and Portland Intl. (PDX).
What is the earliest flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
The earliest flight from Idaho Falls Regional (IDA) to Harry Reid International Airport (LAS) typically departs at approximately 5:00 AM local time, operated by United Airlines, American Airlines, and Alaska Airlines. This is a seasonal service active in May. An early departure like this can help you maximise 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
You'll typically find the most flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Harry Reid International Airport (LAS) on a Thursday, with around 11 flights available. This gives you a good selection for your travel plans. Major airlines on this route include United Airlines, Delta Air Lines, and Alaska Airlines.
What are the most popular departure times for flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
The most popular departure times for flights from Idaho Falls Regional (IDA) to Las Vegas, NV (LAS) are in the early morning, from 6am to 9am. About 31% of passengers prefer this time. This timing works well because you can get an early start to your travel day and arrive in Las Vegas with plenty of time to enjoy your destination.
How long does it take to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
A flight from IDA to LAS with a layover takes around 7 hours 20 minutes, with the route covering approximately 539 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
Select the "Business class" and "First class" filters when looking for IDA to LAS flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.) flight with Expedia?
It's easy to earn miles on a Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.) 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 Las Vegas from Idaho Falls Regional (IDA)?
If you're planning to travel to Las Vegas from Idaho Falls Regional (IDA), you can fly directly into Harry Reid International Airport (LAS) Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN), Salt Lake City Intl. (SLC) before reaching Las Vegas. 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.) at the last minute?
Typically, booking a last minute flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.) 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.) flight and hotel package?
Securing a Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.) 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 Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.)?
If you booked your Idaho Falls, ID (IDA-Idaho Falls Regional) to Las Vegas, NV (LAS-Harry Reid Intl.) 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
Idaho Falls Regional
Destination airport
Harry Reid Intl.
Airlines serving
Alaska Airlines
Return price
£233
Distance
861 km
Average flight time
1 hour 41 mins

Book with confidence

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

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

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 Idaho Falls Regional (IDA) to Harry Reid Intl. (LAS)

The easiest way to view the best deals on flights from Idaho Falls to Las Vegas 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 Idaho Falls Regional to Harry Reid Intl. start at just £233 and range up to £305.  

To find an even better deal, try  

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

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

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Idaho Falls Regional to Harry Reid Intl. 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 Idaho Falls to Las Vegas easily and book with confidence

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