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Helena

$271+ Cheap flights from Boston to Helena (BOS - HLN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — HLN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Boston to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Helena (HLN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$492
(Alaska Airlines)

One-way from

$271
(United Airlines)
From Boston Logan Intl to Helena
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One-way flight from Boston Logan Intl to Helena
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Find flight deals from Boston to Helena

Cheapest flights from Boston to Helena
Explore the most affordable flight options available from Boston to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:23 pmBOS - HLN
2 stops20h 58mAlaska Airlines
Sun 10/56:18 pmHLN - BOS
2 stops34h 23mAlaska Airlines
Deal found 9/11$523
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:30 amBOS - HLN
1 stop11h 10mUnited Airlines
Sun 10/55:18 pmHLN - BOS
2 stops19h 55mUnited Airlines
Deal found 9/10$545
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/269:30 amBOS - HLN
1 stop9h 10mUnited Airlines
Tue 9/302:44 pmHLN - BOS
1 stop7h 00mUnited Airlines
Deal found 9/11$799
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:05 pmBOS - HLN
1 stop22h 25mUnited Airlines
Sun 9/145:20 pmHLN - BOS
1 stop26h 35mUnited Airlines
Deal found 9/10$895

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Helena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Boston to Helena that are best for you.

Fly from

Boston

Fly to

Helena

Route

Depart

Return

Price

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Wed 1/28

7:00 am-3:43 pm

1 stop10h 43m

Helena

Sat 1/31

4:10 pm-11:59 pm

1 stop29h 49m

$492

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Thu 1/29

7:00 am-3:43 pm

1 stop10h 43m

Helena

Sat 1/31

4:10 pm-11:59 pm

1 stop29h 49m

$495

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Fri 1/30

6:00 am-12:27 pm

1 stop8h 27m

Helena

Sat 1/31

5:35 am-2:33 pm

1 stop6h 58m

$499

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Wed 1/28

6:00 am-12:27 pm

1 stop8h 27m

Helena

Sat 1/31

5:35 am-5:50 pm

2 stops10h 15m

$504

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Thu 10/2

8:23 pm-3:21 pm

2 stops20h 58m

Helena

Sun 10/5

6:18 pm-6:41 am

2 stops34h 23m

$523

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Wed 1/28

11:17 am-9:26 pm

1 stop12h 09m

Helena

Sun 2/1

6:15 am-8:05 pm

1 stop11h 50m

$529

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Thu 1/29

6:00 am-12:27 pm

1 stop8h 27m

Helena

Sat 1/31

5:35 am-5:50 pm

2 stops10h 15m

$543

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Thu 10/2

7:30 am-4:40 pm

1 stop11h 10m

Helena

Sun 10/5

5:18 pm-3:13 pm

2 stops19h 55m

$545

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Sun 10/19

7:30 am-2:09 pm

1 stop8h 39m

$271

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Sat 12/20

4:47 pm-9:31 pm

1 stop30h 44m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 11 results
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Best time to book a flight from Boston to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Helena

What is the cheapest month to book a flight from Boston to Helena?

Currently, February is the cheapest month in which you can book a flight from Boston to Helena (average of $353). Flying from Boston to Helena in May is currently the most expensive (average of $517). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to HLN?

Find hourly flight availability from Boston to Helena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

When flying from Boston to Helena, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 12% versus a flight at noon.

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helena. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with United Airlines from Boston to Helena by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Boston to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Boston to Helena?

    For as low as $499, Alaska Airlines can have you in Helena from Boston in 8h 27m. There are 2016 mi between Boston and Helena. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Boston to Helena round-trip?

    Currently priced at $470, United Airlines will fly you from Boston to Helena and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip.

  • Can I find deals for flights from Boston to Helena that include hotel bookings?

    Yes. In addition to deals on Boston to Helena flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Helena?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Helena.

  • Can I find deals for business class flights from Boston to Helena?

    Yes. Cheapflights offers flight deals from Boston to Helena by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Helena?

    Currently, February is the cheapest month in which you can book a flight from Boston to Helena (average of $353). Flying from Boston to Helena in May is currently the most expensive (average of $517). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Boston to Helena

Discover the top airline that operate flights from Boston to Helena. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$470Average$596FlexibilityNo cancel feeOn-time69%

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