BOI - HLN

$203 Find Cheap Flights from Boise to Helena - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$385
Typical prices: $350-$766
Delta
Sat 12/15Mon 12/17
BOI - HLN • 1 stop
Cheapest one-way
$203
Typical prices: $208-$342
Alaska Airlines
Wed 10/24
BOI - HLN • 1 stop
Top layover airports
Seattle/Tacoma Intl (SEA)
Cheapest • Avg $422 (round-trip)
Salt Lake City (SLC)
Shortest trip • 4h 47m (one-way)
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Flight Deals

Cheap Flights from Boise to Helena (BOI-HLN)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boise to Helena

Tue, Dec 15 - Thu, Dec 17
Delta Logo
6:50 pm - 10:26 pmBOI  Boise Air Term. Gowen Fld-HLN Helena
3h 36m1 stop Salt Lake City
Delta Logo
7:00 am - 10:40 amHLN  Helena-BOI Boise Air Term. Gowen Fld
3h 40m1 stop Salt Lake City
$385Delta
Wed, Oct 21 - Sat, Oct 24
Alaska Airlines Logo
12:58 pm - 4:49 pmBOI  Boise Air Term. Gowen Fld-HLN Helena
3h 51m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:26 pm - 10:06 pmHLN  Helena-BOI Boise Air Term. Gowen Fld
4h 40m1 stop Seattle/Tacoma Intl
$405Alaska Airlines
Thu, Sep 17 - Thu, Sep 24
Alaska Airlines Logo
6:23 am - 4:41 pmBOI  Boise Air Term. Gowen Fld-HLN Helena
10h 18m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:18 pm - 10:38 pmHLN  Helena-BOI Boise Air Term. Gowen Fld
5h 20m1 stop Seattle/Tacoma Intl
$405Alaska Airlines
Mon, Sep 7 - Mon, Sep 21
Alaska Airlines Logo
7:48 pm - 4:41 pmBOI  Boise Air Term. Gowen Fld-HLN Helena
20h 53m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:18 pm - 10:38 pmHLN  Helena-BOI Boise Air Term. Gowen Fld
5h 20m1 stop Seattle/Tacoma Intl
$445Alaska Airlines
Mon, Sep 28 - Wed, Sep 30
Alaska Airlines Logo
10:00 am - 4:41 pmBOI  Boise Air Term. Gowen Fld-HLN Helena
6h 41m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:18 pm - 3:30 pmHLN  Helena-BOI Boise Air Term. Gowen Fld
22h 12m1 stop Seattle/Tacoma Intl
$479Alaska Airlines
Wed, Oct 21 - Sat, Oct 24
Alaska Airlines Logo
12:58 pm - 4:49 pmBOI  Boise Air Term. Gowen Fld-HLN Helena
3h 51m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:26 pm - 1:10 pmHLN  Helena-BOI Boise Air Term. Gowen Fld
19h 44m2 stops Seattle/Tacoma Intl Portland
$501Alaska Airlines
Wed, Oct 21 - Sat, Oct 24
Alaska Airlines Logo
12:58 pm - 4:49 pmBOI  Boise Air Term. Gowen Fld-HLN Helena
3h 51m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:26 pm - 1:10 pmHLN  Helena-BOI Boise Air Term. Gowen Fld
19h 44m2 stops Seattle/Tacoma Intl Portland
$504Alaska Airlines
Tue, Sep 1 - Sat, Sep 5
United Airlines Logo
2:44 pm - 9:30 pmBOI  Boise Air Term. Gowen Fld-HLN Helena
6h 46m1 stop Denver Intl
United Airlines Logo
6:15 am - 1:38 pmHLN  Helena-BOI Boise Air Term. Gowen Fld
7h 23m1 stop Denver Intl
$585United Airlines
Wed, Sep 2 - Sun, Sep 6
Delta Logo
6:00 am - 12:15 pmBOI  Boise Air Term. Gowen Fld-HLN Helena
6h 15m1 stop Salt Lake City
Delta Logo
12:55 pm - 7:00 pmHLN  Helena-BOI Boise Air Term. Gowen Fld
6h 05m1 stop Salt Lake City
$585Delta
Booking Insights

Price, demand and travel trends for Boise to Helena flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Boise to Helena with more confidence.

What is the cheapest airline to fly from Boise to Helena?

Delta ($385) and Alaska Airlines ($405) are the cheapest airlines to fly round-trip from Boise to Helena according to KAYAK data over the last 5 days.

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Key details for Boise to Helena flights

Cheapest flight

$203
Flight from Boise to Helena

When to book flights from Boise to Helena

Are your dates flexible? Find out the best times to travel from Boise to Helena based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Boise to Helena flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Boise to Helena?

    Flights from Boise to Helena usually depart from Boise Air Term. Gowen Fld (BOI) and arrive at Helena (HLN).

  • What cabin classes can I book on flights from Boise to Helena?

    Only Economy Class is available on flights from Boise to Helena.

  • Which airports do connecting flights from Boise to Helena pass through?

    One-stop flights from Boise to Helena most commonly connect through:

    • Denver Intl (DEN) - 44% of one-stop connections
    • Salt Lake City (SLC) - 44% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 11% of one-stop connections

    Denver Intl (DEN) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Boise to Helena?

    Yes. Being flexible with your travel dates can save you up to 59% on the Boise to Helena route. Wednesday is the cheapest departure day at $316 round-trip on average, while Monday is the most expensive at $766, a difference of $450. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How long is a flight from Boise to Helena?

    There are currently no nonstop flights available from Boise to Helena. Flights with 1 layover take between 4h 33m and 7h 12m in total, depending on the connection.

  • Do I need a passport to fly from Boise to Helena?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Boise to Helena changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $385 to $1,129. That means the highest observed fare was about 3x higher than the lowest one.

  • How are flight prices from Boise to Helena looking right now?

    One-way fares from Boise to Helena are currently higher than usual. Average one-way flight prices are about $319, which is 23% above the typical average for this route.

  • How much time can I save by choosing a different layover airport from Boise to Helena?

    Flying via Seattle/Tacoma Intl (SEA) gives the shortest average 1-stop total travel time at 4h 33m, compared with 4h 47m via Salt Lake City (SLC) and 7h 12m via Denver Intl (DEN).

  • What car rental options are available at Helena Airport (HLN)?

    Helena Airport (HLN) hosts 5 major car rental companies, with daily rates starting from around $25 for economy cars. Top options include:
    · Budget
    · Enterprise Rent-A-Car
    · Hertz
    · Avis
    · National

  • How much should I expect to pay for a Boise to Helena flight?

    Round-trip flights from Boise to Helena range from $350 to $766, with an average of $466 over the past 12 months. Anything below $350 counts as a good deal.

Your guide to booking Boise to Helena flights

Get tips on when to book, when to fly and what to know before your trip.

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

Information on your arrival and departure airports

Boise (BOI)
Helena (HLN)