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Cheap flights from Boston to Helena from $443

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Helena departing on 10/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Boston to Helena (BOS-HLN)

Cheap round-trip flights

Alaska Airlines Logo
7:00 am - 5:36 pmBOS-HLN
12h 36m1 stop
Alaska Airlines Logo
6:13 pm - 7:29 amHLN-BOS
11h 16m1 stop
$443Alaska Airlines
Find Deal
Thu, Oct 30 - Sun, Nov 2
Delta Logo
6:00 am - 12:24 pmBOS-HLN
8h 24m1 stop
Delta Logo
12:50 pm - 11:53 pmHLN-BOS
9h 03m1 stop
$451Delta
Find Deal
Tue, Dec 2 - Wed, Dec 10
Delta Logo
6:00 am - 12:24 pmBOS-HLN
8h 24m1 stop
Delta Logo
5:40 am - 7:13 pmHLN-BOS
11h 33m2 stops
$456Delta
Find Deal
Tue, Dec 2 - Tue, Dec 9
Delta Logo
12:55 pm - 10:37 pmBOS-HLN
11h 42m2 stops
Delta Logo
5:40 am - 7:13 pmHLN-BOS
11h 33m2 stops
$461Delta
Find Deal
Sat, Dec 6 - Wed, Dec 10
Delta Logo
6:00 am - 12:24 pmBOS-HLN
8h 24m1 stop
Delta Logo
12:50 pm - 11:53 pmHLN-BOS
9h 03m1 stop
$465Delta
Find Deal
Tue, Dec 2 - Thu, Dec 11
Alaska Airlines Logo
9:00 am - 5:51 pmBOS-HLN
10h 51m1 stop
Alaska Airlines Logo
6:28 pm - 7:40 amHLN-BOS
11h 12m1 stop
$478Alaska Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
United Airlines Logo
7:15 am - 1:47 pmBOS-HLN
8h 32m1 stop
United Airlines Logo
6:30 am - 6:48 pmHLN-BOS
10h 18m2 stops
$570United Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 11
United Airlines Logo
8:55 pm - 1:45 pmBOS-HLN
18h 50m1 stop
United Airlines Logo
2:26 pm - 5:58 amHLN-BOS
13h 32m1 stop
$590United Airlines
Find Deal
Tue, Dec 23 - Tue, Dec 30
United Airlines Logo
5:30 am - 9:11 pmBOS-HLN
17h 41m2 stops
United Airlines Logo
5:20 pm - 11:46 pmHLN-BOS
28h 26m1 stop
$593United Airlines
Find Deal
Mon, Sep 1 - Fri, Sep 5
United Airlines Logo
5:30 am - 9:11 pmBOS-HLN
17h 41m2 stops
United Airlines Logo
5:20 pm - 5:34 pmHLN-BOS
22h 14m2 stops
$598United Airlines
Find Deal
Mon, Sep 1 - Fri, Sep 5

Alaska Airlines flights from Boston to Helena

Our best Alaska Airlines deals on Boston to Helena flight tickets
Alaska Airlines
Oct 30
BOS7:00 amBoston Logan Intl
12h 36m
1 stop
HLN5:36 pmHelena
Nov 2
HLN6:13 pmHelena
11h 16m
1 stop
BOS7:29 amBoston Logan Intl
$443
Find similar
Alaska Airlines
Dec 5
BOS9:00 amBoston Logan Intl
10h 51m
1 stop
HLN5:51 pmHelena
Dec 8
HLN6:28 pmHelena
11h 12m
1 stop
BOS7:40 amBoston Logan Intl
$478
Find similar
Alaska Airlines
Oct 30
BOS6:59 pmBoston Logan Intl
24h 37m
2 stops
HLN5:36 pmHelena
Nov 2
HLN6:13 pmHelena
11h 16m
1 stop
BOS7:29 amBoston Logan Intl
$487
Find similar

United Airlines flights from Boston to Helena

Our best United Airlines deals on Boston to Helena flight tickets
United Airlines
Dec 3
BOS7:15 amBoston Logan Intl
8h 32m
1 stop
HLN1:47 pmHelena
Dec 11
HLN6:30 amHelena
10h 18m
2 stops
BOS6:48 pmBoston Logan Intl
$570
Find similar
United Airlines
Dec 23
BOS8:55 pmBoston Logan Intl
18h 50m
1 stop
HLN1:45 pmHelena
Dec 30
HLN2:26 pmHelena
13h 32m
1 stop
BOS5:58 amBoston Logan Intl
$590
Find similar
United Airlines
Sep 1
BOS5:30 amBoston Logan Intl
17h 41m
2 stops
HLN9:11 pmHelena
Sep 5
HLN5:20 pmHelena
28h 26m
1 stop
BOS11:46 pmBoston Logan Intl
$593
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Boston to Helena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Thu 10/30

7:00 am-5:36 pm

1 stop12h 36m

Helena

Sun 11/2

6:13 pm-7:29 am

1 stop11h 16m

$443

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Tue 12/2

6:00 am-12:24 pm

1 stop8h 24m

Helena

Wed 12/10

12:50 pm-11:53 pm

1 stop9h 03m

$451

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Tue 12/2

6:00 am-12:24 pm

1 stop8h 24m

Helena

Tue 12/9

5:40 am-7:13 pm

2 stops11h 33m

$456

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Sat 12/6

12:55 pm-10:37 pm

2 stops11h 42m

Helena

Wed 12/10

5:40 am-7:13 pm

2 stops11h 33m

$461

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Tue 12/2

6:00 am-12:24 pm

1 stop8h 24m

Helena

Thu 12/11

12:50 pm-11:53 pm

1 stop9h 03m

$465

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Fri 12/5

9:00 am-5:51 pm

1 stop10h 51m

Helena

Mon 12/8

6:28 pm-7:40 am

1 stop11h 12m

$478

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Wed 12/3

7:15 am-1:47 pm

1 stop8h 32m

Helena

Thu 12/11

6:30 am-6:48 pm

2 stops10h 18m

$570

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Tue 12/23

8:55 pm-1:45 pm

1 stop18h 50m

Helena

Tue 12/30

2:26 pm-5:58 am

1 stop13h 32m

$590

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Mon 9/1

5:30 am-9:11 pm

2 stops17h 41m

Helena

Fri 9/5

5:20 pm-11:46 pm

1 stop28h 26m

$593

BostonHelena

BOS - HLN

BOSHLN

Boston Logan Intl

Mon 9/1

5:30 am-9:11 pm

2 stops17h 41m

Helena

Fri 9/5

5:20 pm-5:34 pm

2 stops22h 14m

$598

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Helena from

How to get the cheapest flight ticket from Boston to Helena

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from Boston to Helena is on a Saturday. Travelers who choose to depart for Helena on a Saturday will often find tickets for as low as $597. The most expensive day to fly to Helena is Thursday, with ticket prices averaging around $788.

What is the cheapest time of day to depart on your flight to Helena?

According to our data, the cheapest time of day to fly to Helena is in the morning. momondo users have found flights departing from Boston to Helena in the morning for as low as $667. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the afternoon when prices are around $752.

When to book flights from Boston to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Helena according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Helena (BOS to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Helena

Best Price Found

$443

Fastest flight time

8h 24m

Direct flights

None

Airports in Helena

1 airport
The best flight deal from Boston to Helena found on momondo in the last 72 hours is $443
The fastest flight from Boston to Helena takes 8h 24m
There are no direct flights from Boston to Helena. Popular non-direct route for this connection is Boston Logan Intl Airport - Helena Airport.
There is 1 airport near Helena: Helena (HLN)
Search flight deals

  • How far is Boston Logan Intl to Helena by plane?

    The straight-line distance from Boston Logan Intl to Helena is 2016.7 mi. Flights usually cover this in 8h 24m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Helena Airport?

    Prices for flights from Boston Logan Intl Airport to Helena Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Helena Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to Helena Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Helena Airport.

  • What documentation or ID do you need to fly to Helena Airport?

    The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Boston to Helena?

Best airlines flying from Boston to Helena

Compare and see reviews for airlines that fly from Boston to Helena with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $250Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $470Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Helena?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Helena for you.

Can I find flights from Boston to Helena with flexible booking policies on momondo?

Yes. All flights to Helena from Boston on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Boston to Helena?

Once you have performed a search for Boston to Helena flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Boston to Helena right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Boston to Helena flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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