$147 Cheap Flights from Boise (BOI) to Idaho Falls (IDA)

View $147 flight on Fri, Dec 5, 2025Opens in a new window

Popular airlines from Boise Airport (BOI) to Idaho Falls Regional Airport (IDA)

Cheap Flights from Boise to Idaho Falls (BOI-IDA)

Prices were available within the past 7 days and start at $147 for one-way flights and $224 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, May 2 - Sat, May 9
BOI
Boise
IDA
Idaho Falls
$224 Roundtrip, found 4 days ago
$224
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, May 2 from Boise to Idaho Falls, returning Sat, May 9, priced at $224 found 4 days ago
Hawaiian Airlines
Tue, Jan 13 - Tue, Jan 27
BOI
Boise
IDA
Idaho Falls
$262 Roundtrip, found 2 days ago
$262
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Jan 13 from Boise to Idaho Falls, returning Tue, Jan 27, priced at $262 found 2 days ago
Hawaiian Airlines
Tue, Jan 27 - Sat, Feb 14
BOI
Boise
IDA
Idaho Falls
$268 Roundtrip, found 2 days ago
$268
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Tue, Jan 27 from Boise to Idaho Falls, returning Sat, Feb 14, priced at $268 found 2 days ago
Hawaiian Airlines
Wed, Nov 19 - Wed, Dec 3
BOI
Boise
IDA
Idaho Falls
$272 Roundtrip, found 23 hours ago
$272
Roundtrip
found 23 hours ago
Select Hawaiian Airlines flight, departing Wed, Nov 19 from Boise to Idaho Falls, returning Wed, Dec 3, priced at $272 found 23 hours ago
Hawaiian Airlines
Mon, Jan 26 - Sat, Feb 14
BOI
Boise
IDA
Idaho Falls
$278 Roundtrip, found 2 days ago
$278
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Mon, Jan 26 from Boise to Idaho Falls, returning Sat, Feb 14, priced at $278 found 2 days ago
Alaska Airlines
Sat, Dec 6 - Mon, Dec 8
BOI
Boise
IDA
Idaho Falls
$282 Roundtrip, just found
$282
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Dec 6 from Boise to Idaho Falls, returning Mon, Dec 8, priced at $282 just found
Alaska Airlines
Tue, Nov 18 - Wed, Nov 19
BOI
Boise
IDA
Idaho Falls
$285 Roundtrip, found 5 days ago
$285
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Nov 18 from Boise to Idaho Falls, returning Wed, Nov 19, priced at $285 found 5 days ago
Delta
Sat, Dec 6 - Tue, Dec 16
BOI
Boise
IDA
Idaho Falls
$294 Roundtrip, found 2 days ago
$294
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Dec 6 from Boise to Idaho Falls, returning Tue, Dec 16, priced at $294 found 2 days ago
American Airlines
Tue, Nov 18 - Wed, Nov 19
BOI
Boise
IDA
Idaho Falls
$447 Roundtrip, found 5 days ago
$447
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Nov 18 from Boise to Idaho Falls, returning Wed, Nov 19, priced at $447 found 5 days ago
United
Thu, Dec 25 - Wed, Dec 31
BOI
Boise
IDA
Idaho Falls
$529 Roundtrip, found 2 days ago
$529
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 25 from Boise to Idaho Falls, returning Wed, Dec 31, priced at $529 found 2 days ago

Find the cheapest month to fly from Boise (BOI) to Idaho Falls (IDA)

January is typically the cheapest month to fly

From $216 - $644 per traveler.
Flights from Boise (BOI) to Idaho Falls (IDA)
Origin airport
Boise
Destination airport
Idaho Falls Regional
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$224
Distance
207 mi

Boise to Idaho Falls Flights

The cheapest times to fly from Boise to Idaho Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boise to Idaho Falls are during the month of May. You can find some of the cheapest flights from Boise to Idaho Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to Idaho Falls

Sunday is one of the best days to book for cheap flights from Boise to Idaho Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boise to Idaho Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boise to Idaho Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $147 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boise to Idaho Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boise to Idaho Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Boise Airport (BOI) to Idaho Falls Regional Airport (IDA) cost?
Get a cheap one-way flight from $147 or cheap return flight from $224 from Boise Airport (BOI) to Idaho Falls Regional Airport (IDA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Boise Airport (BOI) to Idaho Falls Regional Airport (IDA)?
The cheapest month to fly from BOI to IDA is May, when demand is low. Off-peak season is often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Boise Airport (BOI) to Idaho Falls Regional Airport (IDA)?
To find the cheapest airline flying from BOI to IDA, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Boise Airport (BOI) to Idaho Falls Regional Airport (IDA)?
There are no daily nonstop flights available from Boise Airport (BOI) to Idaho Falls Regional Airport (IDA). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from BOI to IDA?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on a number of factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boise Airport (BOI) to Idaho Falls Regional Airport (IDA)?
To reach Idaho Falls Regional Airport (IDA) without delays, opt for a flight that leaves Boise Airport (BOI) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Idaho Falls Regional Airport (IDA) last-minute?
Booking your flight from BOI to IDA right before your journey is generally more expensive. However, if there's some wiggle room with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book a BOI to IDA flight and hotel package?
Booking a BOI to IDA flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Select from our wide range of accommodations 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 Boise Airport (BOI) to Idaho Falls Regional Airport (IDA)?
In most cases, you're able to cancel or reschedule your BOI to IDA flight. However, additional charges may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like more details, head to our Customer Service portal.

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*Available to One Key members.