BOS - HLN

$200 Find Cheap Flights from Boston to Helena - Compare and Save

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
Alaska Airlines
Wed 10/28Mon 11/2
BOS - HLN • 1 stop
Cheapest one-way
$200
Delta
Tue 7/7
BOS - HLN • 1 stop
Top airlines
Alaska Airlines
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

Wed, Oct 28 - Mon, Nov 2
Alaska Airlines Logo
9:00 am - 4:11 pm
BOS
-
HLN
9h 11m
1 stop
Alaska Airlines Logo
4:41 pm - 5:41 am
HLN
-
BOS
11h 00m
1 stop
$399Alaska Airlines
Tue, Sep 29 - Tue, Oct 6
Delta Logo
6:05 am - 12:17 pm
BOS
-
HLN
8h 12m
1 stop
Delta Logo
5:45 am - 7:45 pm
HLN
-
BOS
12h 00m
2 stops
$404Delta
Tue, Sep 22 - Tue, Sep 29
Delta Logo
2:55 pm - 10:24 pm
BOS
-
HLN
9h 29m
2 stops
Delta Logo
12:57 pm - 1:17 am
HLN
-
BOS
10h 20m
2 stops
$409Delta
Sun, Nov 1 - Sun, Nov 8
Delta Logo
6:00 am - 12:24 pm
BOS
-
HLN
8h 24m
1 stop
Delta Logo
12:50 pm - 11:49 pm
HLN
-
BOS
8h 59m
1 stop
$424Delta
Tue, Sep 29 - Wed, Oct 7
Delta Logo
6:05 am - 12:17 pm
BOS
-
HLN
8h 12m
1 stop
Delta Logo
12:50 pm - 12:58 am
HLN
-
BOS
10h 08m
2 stops
$429Delta
Sat, Aug 15 - Sat, Aug 22
Delta Logo
2:35 pm - 10:30 pm
BOS
-
HLN
9h 55m
2 stops
Delta Logo
12:55 pm - 1:25 am
HLN
-
BOS
10h 30m
2 stops
$434Delta
Wed, Sep 9 - Tue, Sep 15
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
$446Alaska Airlines
Mon, Sep 21 - Sat, Sep 26
Delta Logo
6:00 am - 10:24 pm
BOS
-
HLN
18h 24m
2 stops
Delta Logo
12:57 pm - 11:53 pm
HLN
-
BOS
8h 56m
1 stop
$449Delta
Fri, Sep 4 - Sat, Sep 12
Delta Logo
6:05 am - 12:15 pm
BOS
-
HLN
8h 10m
1 stop
Delta Logo
12:57 pm - 10:49 am
HLN
-
BOS
19h 52m
2 stops
$454Delta
Sat, Sep 12 - Sat, Sep 19
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
$456Alaska 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 Alaska Airlines ($399) and Delta ($404).

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 9830 reviews
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

8.0 ExcellentAnonymous, Jun 2026
SAT - DEN
Read more United Airlines reviews

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Over 5 hour delay with minimal updates or ability to standby for alternative flights. During boarding and 1 hr+ wait for takeoff, seats were drenched w water from air conditioning condensation and always leftover crumbs on carpet and seats

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

Information on your arrival and departure airports

Boston (BOS)
Helena (HLN)