BOS - HLN

$200 Find Cheap Flights from Boston to Helena

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Helena departing on 7/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Helena

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Helena, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Helena, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$399
Delta
Sat 9/19Sat 9/26
BOS - HLN • 1 stop
Cheapest one-way
$200
Delta
Tue 7/7
BOS - HLN • 1 stop
Top airlines
Delta
Cheapest • from $399 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boston and Helena. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Seattle (SEA)
Cheapest • Avg $572 (round-trip)
Denver (DEN)
Shortest trip • 8h 11m (one-way)
Insights
Insights
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Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Helena!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Helena (BOS-HLN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Helena that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Helena

Sat, Sep 19 - Sat, Sep 26
Delta Logo
6:05 am - 12:17 pm
BOS
-
HLN
8h 12m
1 stop
Delta Logo
12:57 pm - 11:53 pm
HLN
-
BOS
8h 56m
1 stop
$399Delta
Sat, Sep 19 - Sat, Sep 26
Delta Logo
5:45 am - 12:17 pm
BOS
-
HLN
8h 32m
2 stops
Delta Logo
12:57 pm - 11:53 pm
HLN
-
BOS
8h 56m
1 stop
$429Delta
Thu, Sep 10 - Wed, Sep 16
Alaska Airlines Logo
10:03 am - 4:41 pm
BOS
-
HLN
8h 38m
1 stop
Alaska Airlines Logo
5:18 pm - 7:39 am
HLN
-
BOS
12h 21m
1 stop
$441Alaska Airlines
Sat, Aug 29 - Sat, Sep 5
Alaska Airlines Logo
7:59 pm - 4:34 pm
BOS
-
HLN
22h 35m
1 stop
Alaska Airlines Logo
5:11 pm - 6:09 am
HLN
-
BOS
10h 58m
2 stops
$445Alaska Airlines
Sun, Sep 13 - Sun, Sep 27
Alaska Airlines Logo
7:12 am - 4:41 pm
BOS
-
HLN
11h 29m
1 stop
Alaska Airlines Logo
5:18 pm - 7:39 am
HLN
-
BOS
12h 21m
1 stop
$449Alaska Airlines
Sat, Aug 29 - Sat, Sep 5
Alaska Airlines Logo
7:59 pm - 4:34 pm
BOS
-
HLN
22h 35m
1 stop
Alaska Airlines Logo
5:11 pm - 4:38 pm
HLN
-
BOS
21h 27m
1 stop
$500Alaska Airlines
Sat, Oct 24 - Wed, Oct 28
Alaska Airlines Logo
7:00 am - 4:11 pm
BOS
-
HLN
11h 11m
1 stop
Alaska Airlines Logo
4:48 pm - 11:54 pm
HLN
-
BOS
29h 06m
1 stop
$506Alaska Airlines
Tue, Jul 28 - Wed, Aug 5
Alaska Airlines Logo
7:03 am - 4:32 pm
BOS
-
HLN
11h 29m
1 stop
Alaska Airlines Logo
5:09 pm - 7:40 am
HLN
-
BOS
12h 31m
1 stop
$509Alaska Airlines
Tue, Jul 28 - Wed, Aug 5
Delta Logo
10:15 am - 10:39 pm
BOS
-
HLN
14h 24m
2 stops
Delta Logo
12:55 pm - 11:57 pm
HLN
-
BOS
9h 02m
1 stop
$512Delta
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
10:36 am - 9:03 pm
BOS
-
HLN
12h 27m
2 stops
United Airlines Logo
2:30 pm - 11:42 pm
HLN
-
BOS
7h 12m
1 stop
$514United Airlines
Booking Insights

KAYAK's insights & trends for Boston to Helena flights

Get data-powered insights and trends into flights from Boston to Helena to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Boston to Helena?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Boston to Helena were found on Delta ($399) and Alaska Airlines ($441).

Find deals

Good to know

Cheapest flight$200
Flight from Boston to Helena

When to book flights from Boston to Helena

Are your dates flexible? Find out the best times to travel from Boston to Helena based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Helena

  • What is the cheapest flight from Boston to Helena?

    In the last 5 days, the lowest price for a flight from Boston to Helena was $200 for a one-way ticket and $399 for a round-trip.

  • Do I need a passport to fly between Boston and Helena?

    A passport is not required to fly from Boston to Helena.

  • Which airports will I be using when flying from Boston to Helena?

    On your way to Helena, you’ll fly out from Boston Logan Intl. You’ll be landing at Helena.

  • Which aircraft models fly most regularly from Boston to Helena?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Helena?

    Star Alliance is the only airline alliance operating flights between Boston and Helena.

  • How does KAYAK find such low prices on flights from Boston to Helena?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Helena.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Helena?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helena from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Helena?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Helena with an airline and back to Boston with another airline. Booking your flights between Boston and HLN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Helena?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Helena from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boston to Helena

 
See real verified KAYAK customer reviews for airlines flying from Boston to Helena. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Helena? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9777 reviews
7.7Boarding
7.1Entertainment
6.6Food
7.3Comfort
8.1Crew
Airline reviews

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

10.0 ExcellentAnonymous, Jun 2026
GSP - IAH
Read more United Airlines reviews

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Boarded early, left early, arrived 40 mins early! A win win for me!

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

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

Information on your arrival and departure airports

Boston (BOS)
Helena (HLN)