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Idaho Falls

Find cheap Allegiant Air flights to Idaho Falls

RDU — IDA
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Find Allegiant Air flight deals to Idaho Falls

Cheapest Allegiant Air flights from USA to Idaho Falls
Explore the most affordable Allegiant Air flight options available from USA to Idaho Falls. Find the lowest fares with prices last updated on July 27, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:57 pm
SNA
-
IDA
Nonstop2h 07m
Allegiant Air
Fri 8/144:55 pm
IDA
-
SNA
Nonstop2h 12m
Allegiant Air
Deal found 7/25$267
This Cheapflightsfares deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:57 pm
SNA
-
IDA
Nonstop2h 07m
Allegiant Air
Mon 8/104:55 pm
IDA
-
SNA
Nonstop2h 12m
Allegiant Air
Deal found 7/23$305
This Cheapflightsfares deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:50 pm
SNA
-
IDA
Nonstop2h 07m
Allegiant Air
Fri 8/144:55 pm
IDA
-
SNA
Nonstop2h 12m
Allegiant Air
Deal found 7/27$335

Flights to Idaho Falls with Allegiant Air at a glance

Find detailed information about Allegiant Air flights from USA to Idaho Falls. Explore the options provided by Allegiant Air to plan your journey from USA to Idaho Falls. Data last updated July 27, 2026.

Popular in

December

Cheapest in

November

Average price

$186

Round-trip from

$267

One-way from

$78

Good round-trip deal

$78 or less

Good one-way deal

$61 or less
Highest demand for flights to Idaho Falls with Allegiant Air; 6% potential price increase.
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Best time to find cheap flights to Idaho Falls with Allegiant Air; 4% potential price drop.
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Average price for flights to Idaho Falls with Allegiant Air (round-trip).
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Allegiant Air
  • Allegiant Air
  • 8/10-8/14
  • Nonstop
  • 4h 19m total
  • USA to Idaho Falls
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Allegiant Air
  • Allegiant Air
  • 9/21
  • Nonstop
  • 2h 05m total
  • USA to Idaho Falls
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Price to beat on a round-trip flight from the United States to Idaho Falls with Allegiant Air.
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Price to beat on a one-way flight from the United States to Idaho Falls with Allegiant Air.
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Cheapflights Insights

Find cheap Allegiant Air flights to Idaho Falls

How long is the flight to Idaho Falls with Allegiant Air?

On average, Allegiant Air flights from the United States to Idaho Falls take 5 hours 0 minutes. Flights to Idaho Falls from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

Allegiant Air weekly flight availability to Idaho Falls

The most flights to Idaho Falls operated by Allegiant Air are scheduled on a Monday (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (0 on average).

FAQs about flights to Idaho Falls with Allegiant Air

  • Which airport do Allegiant Air flights arrive at when travelling to Idaho Falls?

    Allegiant Air flights on this route tend to land at Idaho Falls Fanning Field Airport.

  • Is Allegiant Air the cheapest airline for a flight to Idaho Falls?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Idaho Falls tends to be with Allegiant Air.

  • Are there alternative airlines other than Allegiant Air that fly to Idaho Falls?

    United Airlines, American Airlines and Delta all fly to Idaho Falls and offer an alternative to Allegiant Air.

  • How much is a flight to Idaho Falls with Allegiant Air?

    The average price for a return flight with Allegiant Air is $180; with a one-way flight around $95.

See more FAQs

Reviews of Allegiant Air

See what Cheapflights users have to say about their Allegiant Air experience.
Allegiant Air
7.3
Good
681 reviews
Overview

Crew

8.1

Food

5.8

Comfort

6.9

Boarding

7.7

Entertainment

5.4

Popular Allegiant Air flights

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