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

Frequently Asked Questions

• What are the cheapest flights from Las Vegas to Idaho Falls (LAS-IDA)?

  Based on Trip.com data, Hawaiian Airlines offers one-way fares as low as US$152 on Cheapest nonstop routes (e.g. LAS to IDA on Sun, Mar 8), while Allegiant Air offers Cheapest nonstop round-trips from US$113 departing on Tue, Mar 3 and returning on Fri, Mar 6.

• Which airlines offer direct flights from Las Vegas to Idaho Falls?

  At the moment, you can catch a nonstop flight from Las Vegas to Idaho Falls with the following airlines, including: Allegiant Air Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

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

  It takes about 1 hour 45 minutes to fly from Las Vegas to Idaho Falls.

• When is the best time to book flights from Las Vegas to Idaho Falls?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Las Vegas to Idaho Falls is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Las Vegas to Idaho Falls?

  Based on Trip.com data in the past 4 weeks, there is 2 flight per week flying from Las Vegas to Idaho Falls. You can check the weekly schedule for popular airlines on this route below: Allegiant Air: S/-/-/-/T/-/- -- G4049 (13:20)

• How can I find the best deals on flights from Las Vegas to Idaho Falls?

  To find best deals on flights from Las Vegas to Idaho Falls, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Mar 8, with one-way flights priced at just US$152.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hawaiian Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Idaho Falls travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Las Vegas (LAS) to Idaho Falls (IDA) the cheapest?

  The cheapest months to fly from Las Vegas to Idaho Falls is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Las Vegas to Idaho Falls on?

  After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Las Vegas to Idaho Falls on February 20, 2026 with Allegiant Air, with prices starting at US$113.

• Which airports can I fly to for Idaho Falls from Las Vegas?

  You can land at any one of the following hubs in Idaho Falls, with Harry Reid International Airport to Idaho Falls Regional Airport (LAS-IDA) is by far the most common option on this route: Idaho Falls Regional Airport (IDA).

• Is there any time difference between Las Vegas and Idaho Falls?

  The time difference between Idaho Falls and Las Vegas is 1h.

• How do I change or cancel my ticket from Las Vegas to Idaho Falls?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.