Cheap Flights from Harry Reid International to Idaho Falls

Compare Harry Reid International to Idaho Falls flight deals

Find the cheapest month or even day of the year to fly to Idaho Falls

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Flight deals from Harry Reid International to Idaho Falls

Looking for a cheap last-minute deal or the best return flight from Harry Reid International Airport to Idaho Falls Airport? If you want to travel next month, return fares start from $161. Find the lowest prices on one-way and return tickets right here.

Idaho Falls.$155 per passenger.Departing Fri, 24 Jul, returning Mon, 10 Aug.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 24 Jul, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Mon, 10 Aug, arriving in Harry Reid International.Price includes taxes and charges.From $155, select.

Idaho Falls.$160 per passenger.Departing Fri, 11 Sep, returning Mon, 21 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 11 Sep, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Mon, 21 Sep, arriving in Harry Reid International.Price includes taxes and charges.From $160, select.

Idaho Falls.$161 per passenger.Departing Fri, 24 Jul, returning Mon, 27 Jul.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 24 Jul, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Mon, 27 Jul, arriving in Harry Reid International.Price includes taxes and charges.From $161, select.

Idaho Falls.$162 per passenger.Departing Mon, 3 Aug, returning Mon, 10 Aug.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Mon, 3 Aug, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Mon, 10 Aug, arriving in Harry Reid International.Price includes taxes and charges.From $162, select.

Idaho Falls.$185 per passenger.Departing Mon, 31 Aug, returning Mon, 14 Sep.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Mon, 31 Aug, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Mon, 14 Sep, arriving in Harry Reid International.Price includes taxes and charges.From $185, select.

Idaho Falls.$195 per passenger.Departing Fri, 26 Jun, returning Fri, 3 Jul.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 26 Jun, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Fri, 3 Jul, arriving in Harry Reid International.Price includes taxes and charges.From $195, select.

Idaho Falls.$201 per passenger.Departing Fri, 18 Sep, returning Fri, 2 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Fri, 18 Sep, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Fri, 2 Oct, arriving in Harry Reid International.Price includes taxes and charges.From $201, select.

Idaho Falls.$205 per passenger.Departing Mon, 22 Jun, returning Mon, 22 Jun.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Mon, 22 Jun, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Mon, 22 Jun, arriving in Harry Reid International.Price includes taxes and charges.From $205, select.

Idaho Falls.$272 per passenger.Departing Mon, 12 Oct, returning Fri, 23 Oct.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Mon, 12 Oct, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Fri, 23 Oct, arriving in Harry Reid International.Price includes taxes and charges.From $272, select.

Idaho Falls.$274 per passenger.Departing Thu, 10 Dec, returning Mon, 21 Dec.Return flight with Allegiant Air.Outbound direct flight with Allegiant Air departs from Harry Reid International on Thu, 10 Dec, arriving in Idaho Falls.Inbound direct flight with Allegiant Air departs from Idaho Falls on Mon, 21 Dec, arriving in Harry Reid International.Price includes taxes and charges.From $274, select.

Find the cheapest month to fly from Harry Reid International to Idaho Falls

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Harry Reid International to Idaho Falls flights are currently cheapest in September.

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Direct flights from Harry Reid International to Idaho Falls

Harry Reid International to Idaho Falls: Alternative routes

Compare routes from Harry Reid International to Idaho Falls below. You may find an airport to fly into that's cheaper, faster, or easier than Idaho Falls.

Idaho Falls

4km from central Idaho Falls

ClosestCheapest

from $155

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Pocatello

79km from central Idaho Falls

from $589

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Las Vegas to Idaho Falls: Flight information

The things to know before you go.

Cheapest flight found	$155
Cheapest month to fly	July
Average flight time	1 hr, 49 mins
Most popular airline	Allegiant Air
Average flights per week	3

Finding cheap flights from Harry Reid International to Idaho Falls: Frequently asked questions

How much are return flights from Harry Reid International to Idaho Falls?

The best price we found for a return flight from Harry Reid International to Idaho Falls is $155. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Harry Reid International to Idaho Falls?

1 hour and 49 minutes is the average flight time from Harry Reid International to Idaho Falls.

Which airlines fly direct from Harry Reid International to Idaho Falls?

Allegiant Air flies direct from Harry Reid International to Idaho Falls.

How many flights are there a week from Harry Reid International to Idaho Falls?

As of June 2026, there are 3 flights per week flying from Harry Reid International to Idaho Falls.

When is the cheapest time to fly from Harry Reid International to Idaho Falls?

The cheapest month to fly from Harry Reid International to Idaho Falls is usually July.

Which upcoming date is cheapest to fly from Harry Reid International Airport to Idaho Falls Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Harry Reid International Airport to Idaho Falls Airport on Friday, 24 July 2026.

Can I get a direct flight from Harry Reid International Airport to Idaho Falls Airport?

Yes – the average flight time is 1 hour and 49 minutes.

How can I find the best flight deal to Idaho Falls?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Idaho Falls but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Idaho Falls?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Idaho Falls is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Harry Reid International Airport to Idaho Falls with?

Currently, Allegiant Air offers the cheapest flight tickets to Idaho Falls.

Flying from Harry Reid Airport (formerly McCarran Airport) (LAS) to Idaho Falls Regional Airport (IDA): what you need to know

The average length of a direct flight from Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport is 1 hour 50 minutes.
Give yourself enough time to make your LAS to IDA flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.
During popular months like October, you'll want to get to the airport even earlier. Arrive two hours before a domestic departure and four hours ahead for international flights when you fly during a high season in general.
Allegiant Air is your gateway to exploring Idaho Falls (and maybe even some other great corners of United States!). Check out the direct flights from Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport offered by this popular airline.
Allegiant Air is the most frequently booked airline on this route.
With 76.19% of its services landing as planned, Allegiant Air is the most punctual carrier offering LAS to IDA flights.
We make it a cinch to book a flight with a stopover. To see all your options for tickets from Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Top stopovers between LAS and IDA include:
- Salt Lake City International Airport
- Phoenix Sky Harbour International Airport
- Denver International Airport

How to find the cheapest flights from Harry Reid Airport (formerly McCarran Airport) (LAS) to Idaho Falls Regional Airport (IDA)

The cheapest price we've seen for a one-way Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport flight is $77. A round-trip fare is currently $155. Depending on the availability when you book, these fares can change.
Get cheap tickets from LAS to IDA by booking ten months ahead. Based on our research, that's the sweet spot for bagging a bargain.
Schedule your trip for September. That's the cheapest month for flights from Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport. If you're flexible with your travel dates, try out the 'Whole month' tool to find the cheapest price across every month.
You won't have to check back in every day to see if fares have gone down when you create a Price Alert. We'll notify you as soon as there's a change in price on cheap flights from LAS to IDA.
Choose your ideal departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport.

Handy information about Harry Reid Airport (formerly McCarran Airport) (LAS)

LAS's address is 5757 Wayne Newton Boulevard.
Harry Reid Airport (formerly McCarran Airport) maintains a strong on-time performance, reducing your chances of a delayed flight. Departures from LAS land on schedule 82.07% of the time.
Central Las Vegas to Harry Reid Airport (formerly McCarran Airport) is approximately 19 kilometres. Depending on traffic, it'll take you about 15 minutes to get there if you're driving, ride-sharing or catching a cab.
You can expect a trip time of about 1 hour on public transport.
Searching for a convenient hotel near LAS? If you're catching an early flight from Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport, these accommodation options will have you moments from check-in:

Arriving at Idaho Falls Regional Airport (IDA)

The last thing you want is a long trip to your hotel if you're landing late on a Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport flight. Reserve one of these accommodation options near IDA instead:
Travel at your own pace with an Idaho Falls Regional Airport rental car. Book your wheels from Budget, Avis or Alamo and chase adventure across Idaho Falls and beyond.
Reserve your ride from Idaho Falls Regional Airport a few weeks in advance to lock in the best possible deal. If you're going away during peak season, it's wise to book even earlier.

Getting from Idaho Falls Regional Airport (IDA) to central Idaho Falls

You'll find IDA at 2140 North Skyline.
From Idaho Falls Regional Airport, Idaho Falls is approximately 5 kilometres away. It takes around 10 minutes to get to the centre driving.
Getting there on public transport takes about 1 hour.

When to fly to Idaho Falls Regional Airport (IDA)

The quietest month for a flight from Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport is February, while July is the most popular. Choose the ideal time to go to Idaho Falls based on whether you prefer a bustling atmosphere or a more laid-back vibe.
The warmest month in Idaho Falls is July, with the temperature ranging between 11ºC and 35ºC. Book your flights from Harry Reid Airport (formerly McCarran Airport) to Idaho Falls Regional Airport in this month if this is the type of weather you like.
If you like cooler conditions, search for a cheap ticket from LAS to IDA in January. Average temperatures are between -15ºC and 1ºC then.

Explore more of United States

You've visited Idaho Falls, now it's time to discover more of United States. Travel about 306 kilometres south to Salt Lake City to check off its top sights. From Temple Square to Utah State Capitol and Red Butte Garden, you'll have a full itinerary ahead.
Around 338 kilometres west of Idaho Falls, Boise is another essential stop in United States. Experience major highlights starting with Idaho State Capitol Building, Old Idaho Penitentiary and Zoo Boise.