PDX - HLN

$243 Find Cheap Flights from Portland to Helena - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$433
Typical prices: $403-$578
Alaska Airlines
Wed 10/31Sat 11/3
PDX - HLN • 1 stop
Cheapest one-way
$243
Typical prices: $329-$507
Alaska Airlines
Mon 10/22
PDX - HLN • 1 stop
When to travel
October
Cheapest • 29% price drop
April
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Seattle/Tacoma Intl (SEA)
Cheapest • Avg $471 (round-trip)
Salt Lake City (SLC)
Shortest trip • 4h 37m (one-way)
Insights
Insights
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Flight Deals

Cheap Flights from Portland to Helena (PDX-HLN)

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

Recent round-trip flight deals from Portland to Helena

Sat, Oct 31 - Tue, Nov 3
Alaska Airlines Logo
7:09 am - 4:44 pmPDX  Portland-HLN Helena
8h 35m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:41 pm - 11:54 pmHLN  Helena-PDX Portland
8h 13m1 stop Seattle/Tacoma Intl
$433Alaska Airlines
Sat, Oct 31 - Sat, Nov 7
Alaska Airlines Logo
6:09 am - 4:44 pmPDX  Portland-HLN Helena
9h 35m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:41 pm - 11:00 pmHLN  Helena-PDX Portland
7h 19m1 stop Seattle/Tacoma Intl
$433Alaska Airlines
Sat, Oct 31 - Wed, Nov 4
Alaska Airlines Logo
12:18 pm - 4:44 pmPDX  Portland-HLN Helena
3h 26m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:41 pm - 7:46 pmHLN  Helena-PDX Portland
4h 05m1 stop Seattle/Tacoma Intl
$433Alaska Airlines
Fri, Oct 30 - Wed, Nov 4
Alaska Airlines Logo
2:30 pm - 4:44 pmPDX  Portland-HLN Helena
25h 14m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:41 pm - 11:00 pmHLN  Helena-PDX Portland
7h 19m1 stop Seattle/Tacoma Intl
$443Alaska Airlines
Fri, Oct 30 - Sat, Nov 7
Alaska Airlines Logo
7:37 pm - 4:44 pmPDX  Portland-HLN Helena
20h 07m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:41 pm - 9:55 pmHLN  Helena-PDX Portland
6h 14m1 stop Seattle/Tacoma Intl
$443Alaska Airlines
Fri, Oct 30 - Tue, Nov 3
Alaska Airlines Logo
5:39 pm - 4:44 pmPDX  Portland-HLN Helena
22h 05m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:41 pm - 8:38 amHLN  Helena-PDX Portland
16h 57m1 stop Seattle/Tacoma Intl
$443Alaska Airlines
Sat, Oct 31 - Mon, Nov 2
Alaska Airlines Logo
11:03 am - 4:44 pmPDX  Portland-HLN Helena
4h 41m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:41 pm - 9:48 amHLN  Helena-PDX Portland
18h 07m1 stop Seattle/Tacoma Intl
$448Alaska Airlines
Sat, Oct 31 - Fri, Nov 6
Alaska Airlines Logo
5:06 am - 4:44 pmPDX  Portland-HLN Helena
10h 38m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:41 pm - 3:13 pmHLN  Helena-PDX Portland
23h 32m1 stop Seattle/Tacoma Intl
$448Alaska Airlines
Wed, Oct 28 - Mon, Nov 2
Delta Logo
5:15 pm - 10:24 pmPDX  Portland-HLN Helena
4h 09m1 stop Salt Lake City
Delta Logo
7:15 am - 12:03 pmHLN  Helena-PDX Portland
5h 48m1 stop Salt Lake City
$465Delta
Tue, Oct 27 - Mon, Nov 2
Delta Logo
5:15 pm - 10:24 pmPDX  Portland-HLN Helena
4h 09m1 stop Salt Lake City
Delta Logo
7:15 am - 12:03 pmHLN  Helena-PDX Portland
5h 48m1 stop Salt Lake City
$465Delta
Booking Insights

Price, demand and travel trends for Portland to Helena flights

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

How much is a round-trip flight from Portland to Helena?

Round-trip flights from Portland to Helena start at $433. Prices are typical for this route right now, with typical round-trip fares ranging from $403 to $578. The lowest price found in the past 5 days was $433 on Alaska Airlines.

What's the cheapest day of the week to fly from Portland to Helena?

Thursday is the cheapest day of the week to fly from Portland to Helena, it is 17% cheaper than the average day. Sunday is the most expensive day with flight prices 75% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is the cheapest month to fly from Portland to Helena?

•October is the cheapest month to fly from Portland to Helena at $335 round-trip.
•September ($837) and December ($830) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 149% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Find deals

Key details for Portland to Helena flights

Low season

December

Cheapest flight

$243
Best time to beat the crowds but there is an average 76% increase in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Portland to Helena

When to book flights from Portland to Helena

Are your dates flexible? Find out the best times to travel from Portland 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 Portland 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 Portland to Helena?

    Flights from Portland to Helena usually depart from Portland (PDX) and arrive at Helena (HLN).

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

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

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

    Connecting flights from Portland to Helena most commonly pass through:

    • Seattle/Tacoma Intl (SEA) - 68% of one-stop connections
    • Salt Lake City (SLC) - 32% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

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

    Yes. Being flexible with your travel dates can save you up to 53% on the Portland to Helena route. Thursday is the cheapest departure day at $394 round-trip on average, while Sunday is the most expensive at $830, a difference of $436. 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 Portland to Helena?

    There are currently no nonstop flights available from Portland to Helena. Flights with 1 layover take between 4h 37m and 5h 01m in total, depending on the connection.

  • Do I need a passport to fly from Portland 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 Portland 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 $433 to $1,031. That means the highest observed fare was about 2x higher than the lowest one.

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

    One-way fares from Portland to Helena are currently lower than usual. Average one-way flight prices are about $365, which is 19% below the typical average for this route.

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

    Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 37m, compared with 5h 01m via Seattle/Tacoma Intl (SEA).

  • What is the time difference between Portland and Helena?

    Helena is 1 hour ahead of Portland (Mountain Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • 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 Portland to Helena flight?

    Round-trip flights from Portland to Helena range from $403 to $578, with an average of $473 over the past 12 months. Anything below $403 counts as a good deal.

Your guide to booking Portland to Helena flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Thursday departure instead of Sunday. On this route, Thursday flights average $394 - about $436 less than Sunday (53% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Portland to Helena trip for October. Fares historically average $335 round-trip in that month - typically $502 less than the most expensive month, which is September (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Helena Airport.
    - Days Inn by Wyndham Helena
    - Baymont by Wyndham Helena
    - Americas Best Value Inn & Suites Helena

More options for your flight from Portland to Helena

Complete your trip to Helena with a hotel stay or car rental

Car rentals in Helena
Hotels in Helena
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