Cheap Flights from Las Vegas to Idaho Falls

Compare Las Vegas to Idaho Falls flight deals

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

Book the best Idaho Falls fare with no extra fees

Flight deals from Las Vegas to Idaho Falls

Looking for a cheap last-minute deal or the best return flight from Las Vegas to Idaho Falls? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Las Vegas to Idaho Falls

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

Direct flights from Las Vegas to Idaho Falls

Las Vegas to Idaho Falls: Alternative routes

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

Las Vegas to Idaho Falls: Flight information

The things to know before you go.
Cheapest flight foundR 774
Cheapest month to flySeptember
Average flight time1 hr, 48 mins
Most popular airlineAllegiant Air
Average flights per week3

Finding cheap flights from Las Vegas to Idaho Falls: Frequently asked questions

The best price we found for a return flight from Las Vegas to Idaho Falls is R 1,545. 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.
1 hour and 48 minutes is the average flight time from Las Vegas to Idaho Falls.
Allegiant Air flies direct from Las Vegas to Idaho Falls.
As of August 2025, there are 3 flights per week flying from Las Vegas to Idaho Falls.
The cheapest month to fly from Las Vegas to Idaho Falls is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Las Vegas to Idaho Falls Airport on Friday, 12 September 2025.
Yes – the average flight time is 1 hour and 48 minutes.
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.
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.
The cheapest airline that flies to Idaho Falls is Allegiant Air .

Travelling from Las Vegas to Idaho Falls Regional Airport (IDA): What you need to know

  • Kick off your travels at Harry Reid Airport (formerly McCarran Airport) (LAS), the main airport in Las Vegas. Search for flights from Las Vegas to Idaho Falls Regional Airport (IDA) that depart from this base.

  • Expect to be in the air for 1 hour 50 minutes. That's the average journey time for a direct Las Vegas to Idaho Falls Regional Airport flight.

  • Idaho Falls is one hour ahead of Las Vegas. Idaho Falls Regional Airport is located in Idaho Falls, which runs on the UTC-6 timezone.

  • To ensure you catch your flight from Las Vegas to IDA, allow plenty of time to check in and drop off your luggage. Arriving two hours before international departures and an hour before domestic flights is the general travel rule.

  • High season means busier airports, so aim to get there even earlier. Give yourself at least two hours before a domestic flight and four hours for international journeys to stick to your schedule.

Airports in Las Vegas

Harry Reid Airport (formerly McCarran Airport) (LAS)

  • Harry Reid Airport (formerly McCarran Airport) (LAS) offers an easy route to your destination. Nonstop flights from Las Vegas to Idaho Falls Regional Airport (IDA) can be booked from this terminal.

  • You can get away on a direct flight from Las Vegas to Idaho Falls Regional Airport with Allegiant Air. This top airline offers services from LAS.

  • Most travellers prefer to book seats with Allegiant Air from LAS to IDA.

  • Allegiant Air is the most punctual carrier on this route, with 76.19% of its services arriving as scheduled.

  • The journey from central Las Vegas to LAS takes about 1 hour on public transport. If you drive, ride-share or get a cab, you'll cover the 19 kilometres in 15 minutes or so, depending on traffic.

  • Want a leisurely start to your holiday? Stay near Harry Reid Airport (formerly McCarran Airport). Whether you're catching an early flight from Las Vegas to Idaho Falls Regional Airport or want to avoid feeling rushed, these hotels have you covered:

  • Harry Reid Airport (formerly McCarran Airport) has a strong on-time performance, reducing the likelihood of delays. Departures from LAS make it to their destination as scheduled 82.07% of the time.

  • LAS is located at 5757 Wayne Newton Boulevard.

About Idaho Falls Regional Airport (IDA)

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

  • Idaho Falls Regional Airport to the centre of Idaho Falls is around 3 kilometres. If you're renting a car or taking a cab, plan in advance to make your trip as easy as possible. Journey times may vary based on traffic and the time of day.

  • It takes roughly 1 hour if you're travelling by public transport.

How to find the cheapest flights from Las Vegas to Idaho Falls Regional Airport (IDA)

  • Currently, R 774 is the lowest price we've found for a one-way ticket from Las Vegas to Idaho Falls Regional Airport. The cheapest price for a return flight is R 1,545. Remember fares can change due to demand at the time of booking.

  • Get your hands on cheap flights from Las Vegas to IDA by booking four months ahead. According to our research, that's the sweet spot for finding the biggest deals.

  • Schedule your trip for September. That's the best month for landing an incredible deal on Las Vegas to Idaho Falls Regional Airport tickets. If you're open to different travel dates, use the 'Whole month' tool to find the lowest price across every month.

  • Locking in a cheap plane ticket from Las Vegas to IDA couldn't be easier with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch as soon as there's a better deal.

  • Bag the best deal on a flight from Las Vegas to Idaho Falls Regional Airport with the help of the filters. Choose your ideal departure and arrival times, number of stops and airlines. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best.'

The best time to fly from Las Vegas to Idaho Falls Regional Airport (IDA)

  • July is the busiest month for flights from Las Vegas to Idaho Falls Regional Airport (IDA). Plan your visit to Idaho Falls in February if you'd rather avoid peak season.

  • Book a Las Vegas to IDA plane ticket departing in July if you're eager to visit the city during its warmest month. Expect temperatures in Idaho Falls to range from 11ºC (52ºF) to 35ºC (95ºF).

  • Look for cheap tickets from Las Vegas to Idaho Falls Regional Airport in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -15ºC (5ºF) and 1ºC (34ºF).

More about Idaho Falls

  • Once you've booked your flight from Las Vegas to Idaho Falls Regional Airport, choose a hotel that puts you where you want to be. Make one of these options your base for exploring Idaho Falls:

  • Every great holiday has to include some sightseeing. Idaho Falls River Walk, Shadow's Park and Snake River Landing are must-do's during your Idaho Falls adventure.

Explore more of the United States

  • You've done Idaho Falls, now it's time to explore other corners of the United States. Travel about 257 kilometres south to Ogden to check off its top attractions. From Snowbasin Resort to Dinosaur Park and Museum and Mt. Ogden Park-East Field (#4080), there's plenty to keep you busy.

  • Around 274 kilometres south of Idaho Falls, Layton is another favourite stop in the United States. Experience this destination's highlights firsthand at Adams Canyon Trail, SeaQuest Utah and SeaQuest Interactive Aquarium.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.