HLN - PDX

$223 Find Cheap Flights from Helena to Portland - 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: $385-$483
Alaska Airlines
Wed 12/5Sat 12/8
HLN - PDX • 1 stop
Cheapest one-way
$223
Typical prices: $170-$487
Alaska Airlines
Sun 10/28
HLN - PDX • 1 stop
When to travel
March
Cheapest • 38% price drop
November
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Seattle/Tacoma Intl (SEA)
Cheapest • Avg $364 (round-trip)
Salt Lake City (SLC)
Shortest trip • 4h 58m (one-way)
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Cheap Flights from Helena to Portland (HLN-PDX)

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

Recent round-trip flight deals from Helena to Portland

Sat, Dec 5 - Tue, Dec 8
Alaska Airlines Logo
4:49 pm - 7:53 pmHLN  Helena-PDX Portland
4h 04m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:03 pm - 4:12 pmPDX  Portland-HLN Helena
23h 09m1 stop Seattle/Tacoma Intl
$433Alaska Airlines
Sat, Dec 5 - Tue, Dec 8
Alaska Airlines Logo
4:49 pm - 7:53 pmHLN  Helena-PDX Portland
4h 04m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:40 pm - 4:12 pmPDX  Portland-HLN Helena
21h 32m2 stops San Francisco Seattle/Tacoma Intl
$441Alaska Airlines
Sat, Dec 5 - Tue, Dec 8
Alaska Airlines Logo
4:55 pm - 1:28 pmHLN  Helena-PDX Portland
21h 33m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:03 pm - 4:18 pmPDX  Portland-HLN Helena
23h 15m1 stop Seattle/Tacoma Intl
$443Alaska Airlines
Sat, Feb 27 - Sun, Mar 7
Alaska Airlines Logo
4:08 pm - 10:44 pmHLN  Helena-PDX Portland
7h 36m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
1:59 pm - 3:31 pmPDX  Portland-HLN Helena
24h 32m1 stop Seattle/Tacoma Intl
$458Alaska Airlines
Fri, Oct 23 - Tue, Oct 27
Delta Logo
1:08 pm - 6:12 pmHLN  Helena-PDX Portland
6h 04m1 stop Salt Lake City
Delta Logo
5:33 am - 12:28 pmPDX  Portland-HLN Helena
5h 55m1 stop Salt Lake City
$465Delta
Fri, Oct 23 - Tue, Oct 27
Delta Logo
1:08 pm - 9:56 pmHLN  Helena-PDX Portland
9h 48m2 stops Salt Lake City Seattle/Tacoma Intl
Delta Logo
5:33 am - 12:28 pmPDX  Portland-HLN Helena
5h 55m1 stop Salt Lake City
$470Delta
Tue, Oct 20 - Sun, Oct 25
Delta Logo
1:08 pm - 9:56 pmHLN  Helena-PDX Portland
9h 48m2 stops Salt Lake City Seattle/Tacoma Intl
Delta Logo
5:33 am - 12:28 pmPDX  Portland-HLN Helena
5h 55m1 stop Salt Lake City
$470Delta
Sun, Oct 11 - Sun, Oct 18
United Airlines Logo
2:30 pm - 10:53 pmHLN  Helena-PDX Portland
9h 23m1 stop Denver Intl
United Airlines Logo
7:00 am - 1:48 pmPDX  Portland-HLN Helena
29h 48m2 stops San Francisco Denver Intl
$868United Airlines
Sun, Oct 11 - Sun, Oct 18
United Airlines Logo
2:30 pm - 12:05 pmHLN  Helena-PDX Portland
22h 35m2 stops Denver Intl San Francisco
United Airlines Logo
5:30 am - 1:48 pmPDX  Portland-HLN Helena
31h 18m2 stops San Francisco Denver Intl
$894United Airlines
Mon, Oct 5 - Thu, Oct 8
United Airlines Logo
2:30 pm - 6:31 pmHLN  Helena-PDX Portland
29h 01m2 stops Denver Intl San Francisco
United Airlines Logo
5:30 am - 9:08 pmPDX  Portland-HLN Helena
14h 38m2 stops San Francisco Denver Intl
$1,273United Airlines
Booking Insights

Price, demand and travel trends for Helena to Portland flights

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

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

Round-trip flights from Helena to Portland start at $433. Prices are typical for this route right now, with typical round-trip fares ranging from $385 to $483. The lowest price found in the past 5 days was $433 on Alaska Airlines.

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Key details for Helena to Portland flights

Low season

July

Cheapest flight

$223
Most popular time to fly with an average 32% increase in price.
Flight from Helena to Portland

When to book flights from Helena to Portland

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

Your Helena to Portland 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 Helena to Portland?

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

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

    Two cabin classes are available on flights from Helena to Portland:

    • Economy Class
    • First Class

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

    Connecting flights from Helena to Portland most commonly pass through:

    • Salt Lake City (SLC) - 63% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 37% 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 Helena to Portland?

    Yes. Being flexible with your travel dates can save you up to 34% on the Helena to Portland route. Thursday is the cheapest departure day at $393 round-trip on average, while Monday is the most expensive at $588, a difference of $195. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Portland?

    Some of the most popular sights in Portland are Moda Center, Oregon Convention Center and Arlene Schnitzer Concert Hall. These are among the most viewed places in Portland on KAYAK.

  • How long is a flight from Helena to Portland?

    There are currently no nonstop flights available from Helena to Portland. Flights with 1 layover take between 4h 58m and 8h 22m in total, depending on the connection.

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

    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 Helena to Portland 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 $1,266. That means the highest observed fare was about 3x higher than the lowest one.

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

    One-way fares from Helena to Portland are currently lower than usual. Average one-way flight prices are about $306, which is 38% below the typical average for this route.

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

    Flying via Salt Lake City (SLC) gives the shortest average 1-stop total travel time at 4h 58m, compared with 8h 22m via Seattle/Tacoma Intl (SEA).

  • What is the time difference between Helena and Portland?

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

  • What car rental options are available at Portland Airport (PDX)?

    Portland Airport (PDX) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:
    • Thrifty
    • Dollar
    • Hertz
    • Sixt
    • Payless

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

    Round-trip flights from Helena to Portland range from $385 to $483, with an average of $434 over the past 12 months. Anything below $385 counts as a good deal.

Your guide to booking Helena to Portland 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 Monday. On this route, Thursday flights average $393 - about $195 less than Monday (33% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Helena to Portland trip for March. Fares historically average $270 round-trip in that month - typically $318 less than the most expensive month, which is October (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Portland Airport.
    - Country Inn & Suites by Radisson, Portland Air, OR
    - Radisson Hotel Portland Airport
    - Holiday Inn Portland-Airport (I-205) By IHG

More options for your flight from Helena to Portland

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

Car rentals in Portland
Hotels in Portland
Vacations in Portland