$128 Cheap Flights from Helena (HLN) to Boise (BOI)

View $128 flight on Fri, Mar 6, 2026Opens in a new window

Popular airlines from Helena, MT (HLN-Helena Regional) to Boise Airport (BOI)

Cheap Flights from Helena to Boise (HLN-BOI)

Prices were available within the past 7 days and start at $128 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
Wed, Jan 7 - Tue, Jan 13
HLN
Helena
BOI
Boise
$224 Roundtrip, found 4 days ago
$224
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed, Jan 7 from Helena to Boise, returning Tue, Jan 13, priced at $224 found 4 days ago
Alaska Airlines
Wed, Jan 7 - Tue, Jan 13
HLN
Helena
BOI
Boise
$234 Roundtrip, found 4 days ago
$234
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed, Jan 7 from Helena to Boise, returning Tue, Jan 13, priced at $234 found 4 days ago
Delta
Thu, Mar 5 - Tue, Mar 10
HLN
Helena
BOI
Boise
$241 Roundtrip, found 5 days ago
$241
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Mar 5 from Helena to Boise, returning Tue, Mar 10, priced at $241 found 5 days ago
Hawaiian Airlines
Tue, Jan 20 - Sat, Jan 24
HLN
Helena
BOI
Boise
$245 Roundtrip, found 3 days ago
$245
Roundtrip
found 3 days ago
Select Hawaiian Airlines flight, departing Tue, Jan 20 from Helena to Boise, returning Sat, Jan 24, priced at $245 found 3 days ago
Hawaiian Airlines
Tue, Mar 3 - Wed, Mar 11
HLN
Helena
BOI
Boise
$249 Roundtrip, found 5 days ago
$249
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Tue, Mar 3 from Helena to Boise, returning Wed, Mar 11, priced at $249 found 5 days ago
Alaska Airlines
Wed, Jan 7 - Tue, Jan 13
HLN
Helena
BOI
Boise
$253 Roundtrip, found 4 days ago
$253
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed, Jan 7 from Helena to Boise, returning Tue, Jan 13, priced at $253 found 4 days ago
Alaska Airlines
Thu, Mar 5 - Sun, Mar 8
HLN
Helena
BOI
Boise
$254 Roundtrip, found 5 days ago
$254
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, Mar 5 from Helena to Boise, returning Sun, Mar 8, priced at $254 found 5 days ago
Hawaiian Airlines
Mon, Mar 2 - Wed, Mar 11
HLN
Helena
BOI
Boise
$259 Roundtrip, found 5 days ago
$259
Roundtrip
found 5 days ago
Select Hawaiian Airlines flight, departing Mon, Mar 2 from Helena to Boise, returning Wed, Mar 11, priced at $259 found 5 days ago
Delta
Thu, Jan 22 - Tue, Jan 27
HLN
Helena
BOI
Boise
$261 Roundtrip, found 3 days ago
$261
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, Jan 22 from Helena to Boise, returning Tue, Jan 27, priced at $261 found 3 days ago
United
Fri, Jan 23 - Mon, Jan 26
HLN
Helena
BOI
Boise
$351 Roundtrip, found 3 days ago
$351
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jan 23 from Helena to Boise, returning Mon, Jan 26, priced at $351 found 3 days ago

Alternative airports near Boise

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Boise Airport BOI. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $537
BOI
Boise Airport
CheapestClosest
Average driving time to city center8 min
Flights from $537
Flights from Helena (HLN) to Boise (BOI)
Origin airport
Helena Regional
Destination airport
Boise
Airlines serving
Alaska Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$224
Distance
294 mi

Helena to Boise Flights

The cheapest times to fly from Helena to Boise

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 Helena to Boise are during the month of January. You can find some of the cheapest flights from Helena to Boise with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Helena to Boise

Sunday is one of the best days to book for cheap flights from Helena to Boise: 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 Helena to Boise

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 Helena to Boise in 2026. You can also book with separate airlines for your outbound and return journeys, from $128 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 Helena to Boise 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 Helena to Boise 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 Helena Regional Airport (HLN) to Boise Airport (BOI) cost?
Snag a cheap one-way flight from $128 or cheap return flight from $224 from Helena Regional Airport (HLN) to Boise Airport (BOI) 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 Helena Regional Airport (HLN) to Boise Airport (BOI)?
January is the least expensive month to fly from HLN to BOI. Traveling during quieter months is often the key to better flight prices.
What is the cheapest airline that flies from Helena Regional Airport (HLN) to Boise Airport (BOI)?
To find the cheapest airline that'll fly you from HLN to BOI, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Helena Regional Airport (HLN) to Boise Airport (BOI)?
There aren't any daily nonstop flights departing from Helena Regional Airport (HLN) to Boise Airport (BOI). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from HLN to BOI?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on a range of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Helena Regional Airport (HLN) to Boise Airport (BOI)?
To avoid potential delays on the Helena Regional Airport (HLN) to Boise Airport (BOI) route, fly before 3 PM. Flights after this time are 22% more likely to be canceled.**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 Helena Regional Airport (HLN) to Boise Airport (BOI) last-minute?
Last-minute bookings from HLN to BOI are generally more expensive. For the best rates, start searching for flights well ahead of time. That said, if your travel plans are flexible, it's possible to score a cheap ticket right before your journey.
Is it cheaper to book a HLN to BOI flight and hotel package?
Booking a HLN to BOI flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our extensive range of stays and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Helena Regional Airport (HLN) to Boise Airport (BOI)?
If you booked your HLN to BOI flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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*Available to One Key members.