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$187+ Cheap flights from Helena to Portland (HLN - PDX)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — PDX
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
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Cheap flight deals from Helena to Portland

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Portland (PDX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(Delta)

One-way from

$187
(Alaska Airlines)

Popular in

May

Cheapest in

July

Average price

$413
Provider with most accurate pricing for Helena-Portland flight deals.
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Provider most trusted by Cheapflights users for Helena-Portland flights.
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From Helena to Portland
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One-way flight from Helena to Portland
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Highest demand for flights based on searches. 15% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Helena to Portland

Cheapest flights from Helena to Portland
Explore the most affordable flight options available from Helena to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2025.

This Delta deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:45 amHLN - PDX
1 stop4h 18mDelta
Wed 10/225:40 amPDX - HLN
1 stop5h 40mDelta
Deal found 9/30$271
This Alaska Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/246:18 pmHLN - PDX
1 stop19h 07mAlaska Airlines
Sun 10/267:31 pmPDX - HLN
1 stop21h 05mAlaska Airlines
Deal found 9/30$272
This Delta deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/225:45 amHLN - PDX
1 stop4h 18mDelta
Wed 10/225:00 pmPDX - HLN
1 stop4h 16mDelta
Deal found 10/1$294
This Delta deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:45 amHLN - PDX
2 stops8h 04mDelta
Thu 10/235:40 amPDX - HLN
1 stop5h 40mDelta
Deal found 9/30$325
This Delta deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/201:06 pmHLN - PDX
2 stops10h 35mDelta
Thu 11/2711:35 amPDX - HLN
2 stops9h 55mDelta
Deal found 10/1$355
This Expedia deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/226:18 pmHLN - PDX
1 stop5h 27mAlaska Airlines
Sat 11/110:28 pmPDX - HLN
1 stop19h 08mAlaska Airlines
Deal found 10/2$405
This Delta deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/221:00 pmHLN - PDX
2 stops7h 19mDelta
Thu 10/235:40 amPDX - HLN
1 stop5h 40mDelta
Deal found 10/1$406
This Alaska Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/216:18 pmHLN - PDX
2 stops13h 00mAlaska Airlines
Wed 10/2210:25 amPDX - HLN
2 stops6h 16mAlaska Airlines
Deal found 9/30$411
This Alaska Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:13 pmHLN - PDX
1 stop6h 31mAlaska Airlines
Fri 11/281:24 pmPDX - HLN
1 stop4h 28mAlaska Airlines
Deal found 10/1$414

Cheapflights Fare Finder

 
Customize your flight search to find flights from Helena to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 2, 2025.
Use the filters below to find and compare flights from Helena to Portland that are best for you.

Fly from

Helena

Fly to

Portland

Route

Depart

Return

Price

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 10/22

5:45 am-9:03 am

1 stop4h 18m

Portland

Wed 10/22

5:00 pm-10:16 pm

1 stop4h 16m

$294

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 11/20

1:06 pm-10:41 pm

2 stops10h 35m

Portland

Thu 11/27

11:35 am-10:30 pm

2 stops9h 55m

$355

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 10/22

1:00 pm-7:19 pm

2 stops7h 19m

Portland

Thu 10/23

5:40 am-12:20 pm

1 stop5h 40m

$406

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 11/20

6:13 pm-11:44 pm

1 stop6h 31m

Portland

Fri 11/28

1:24 pm-6:52 pm

1 stop4h 28m

$414

HelenaPortland

HLN - PDX

HLNPDX

Helena

Tue 10/21

6:18 pm-6:20 am

1 stop13h 02m

Portland

Thu 10/23

3:30 pm-5:41 pm

1 stop25h 11m

$445

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 10/22

6:18 pm-10:45 pm

1 stop5h 27m

Portland

Thu 10/23

10:00 pm-5:41 pm

1 stop18h 41m

$451

HelenaPortland

HLN - PDX

HLNPDX

Helena

Mon 10/20

6:18 pm-10:45 pm

1 stop5h 27m

Portland

Thu 10/23

3:30 pm-5:41 pm

1 stop25h 11m

$451

HelenaPortland

HLN - PDX

HLNPDX

Helena

Mon 12/1

7:32 pm-1:50 pm

1 stop19h 18m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/1

Compare providers for flights from Helena to Portland

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Helena to Portland in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Helena-Portland flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helena-Portland flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helena-Portland flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helena-Portland flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Helena-Portland flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Helena to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from Helena with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Helena to Portland

What is the cheapest month to book a flight from Helena to Portland?

Currently, November is the cheapest month in which you can book a flight from Helena to Portland (average of $277). Flying from Helena to Portland in March is currently the most expensive (average of $368). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portland. Reviews last updated October 2, 2025.
Get a feel of what it's like to fly with Alaska Airlines and Delta from Helena to Portland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,994 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
10,994 reviews
Alaska Airlines
8.0
Very good
10,994 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
8.0
Very good
7,962 reviews
Alaska Airlines
8.0
Very good
10,994 reviews

Comfort

7.8

Entertainment

7.0

Crew

8.5

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Helena to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Helena to Portland?

    A quick flight from Helena to Portland can take about 4h 18m. Delta provides one of the quickest options available for as low as $294. Helena and Portland are separated by a distance of 512 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Helena to Portland round-trip?

    According to our current data, Alaska Airlines ($147), and Delta ($183) offers the cheapest pricing from Helena to Portland. These flights start at 58% lower than the current average price 3 months from now.

  • Can I find deals for flights from Helena to Portland that include hotel bookings?

    Yes. In addition to deals on Helena to Portland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to Portland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to Portland.

  • Can I find deals for business class flights from Helena to Portland?

    Yes. Cheapflights offers flight deals from Helena to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Helena to Portland?

    Currently, November is the cheapest month in which you can book a flight from Helena to Portland (average of $277). Flying from Helena to Portland in March is currently the most expensive (average of $368). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Vancouver
Seaside
Beaverton
Clackamas
Lincoln City
Lake Oswego
Hillsboro
McMinnville
Cannon Beach
Long Beach
Longview
Tigard
The Dalles
Depoe Bay
Stevenson
Wilsonville
Pacific City
Tillamook
Troutdale
Gresham

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Top 2 airlines flying from Helena to Portland

Discover the top 2 airlines that operate flights from Helena to Portland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$147Average$277FlexibilityNo cancel feeOn-time75%
DeltaCheapest$183Average$441FlexibilityNo cancel feeOn-timeN/A

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