HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Helena

$179+ Cheap flights from Portland to Helena (PDX - HLN)

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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — HLN
Jun 2 — Jun 91
Mon 6/2
Mon 6/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Helena with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Portland to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Helena (HLN). 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 May 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$335
(Alaska Airlines)

One-way from

$179
(Delta)

Popular in

October

Cheapest in

January

Average price

$443
Provider with most accurate pricing for Portland-Helena flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Helena flights.
Search Deals
From Portland to Helena
Search Deals
One-way flight from Portland to Helena
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

Find flight deals from Portland to Helena

Cheapest flights from Portland to Helena
Explore the most affordable flight options available from Portland to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 28, 2025.

This Alaska Airlines deal was found by Cheapflights users on 5/26. 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 8/287:00 amPDX - HLN
1 stop7h 21mAlaska Airlines
Tue 9/24:02 pmHLN - PDX
1 stop8h 57mAlaska Airlines
Deal found 5/26$313
This Delta deal was found by Cheapflights users on 5/28. 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 6/255:30 amPDX - HLN
1 stop5h 57mDelta
Wed 7/25:44 amHLN - PDX
1 stop4h 11mDelta
Deal found 5/28$377
This United Airlines deal was found by Cheapflights users on 5/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/193:42 pmPDX - HLN
2 stops24h 13mUnited Airlines
Mon 6/235:39 pmHLN - PDX
1 stop17h 00mUnited Airlines
Deal found 5/26$550

Cheapflights Fare Finder

Customize your flight search to find flights from Portland to Helena 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 May 28, 2025.
Use the filters below to find and compare flights from Portland to Helena that are best for you.

Fly from

Portland

Fly to

Helena

Route

Depart

Return

Price

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 8/28

7:00 am-3:21 pm

1 stop7h 21m

Helena

Tue 9/2

4:02 pm-11:59 pm

1 stop8h 57m

$313

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 6/25

5:30 am-12:27 pm

1 stop5h 57m

Helena

Wed 7/2

5:44 am-8:55 am

1 stop4h 11m

$377

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 6/19

3:42 pm-4:55 pm

2 stops24h 13m

Helena

Mon 6/23

5:39 pm-9:39 am

1 stop17h 00m

$550

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 6/30

5:30 am-12:27 pm

1 stop5h 57m

$199

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 8/6

9:59 pm-3:31 pm

1 stop16h 32m

$288

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 6/30

7:35 pm-9:15 pm

3 stops24h 40m

$412

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

Compare providers for flights from Portland to Helena

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 Portland to Helena in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy2 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 Portland-Helena flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Helena flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Helena flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Helena flights, Cheapflights users trust eDreams the most. eDreams 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 Portland-Helena 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 Portland to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from Portland 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 Portland to Helena

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

Currently, February is the cheapest month in which you can book a flight from Portland to Helena (average of $353). Flying from Portland to Helena in July is currently the most expensive (average of $564). 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.

Rainfall in Helena by month

Plan your trip to Helena by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Helena ranges from 0.3 - 2.1 inches per month. June is typically the wettest month, when rainfall can reach 2.1 in. February is typically the driest time to visit Helena when rainfall is around 0.3 in.

Temperature in Helena by month

Plan your trip to Helena by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Helena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. 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 Helena. Reviews last updated May 28, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from Portland to Helena. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,957 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,756 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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

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

    Cheapflights users have booked flights from Portland to Helena round-trip from $335. Other airlines that can offer you cheap pricing are Delta, from $377, and United Airlines, from $525. You may be able to fly from Portland to Helena for 18% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Portland to Helena one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $179. Users have also found prices from $288 and $412 on Alaska Airlines and United Airlines, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Helena 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 Portland to Helena?

    Currently, February is the cheapest month in which you can book a flight from Portland to Helena (average of $353). Flying from Portland to Helena in July is currently the most expensive (average of $564). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Helena

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Bozeman flights
Portland to Kalispell flights
Portland to Billings flights
Portland to Missoula flights
Portland to Great Falls flights
Medford to Kalispell flights
Portland to Cody flights
Boise to Kalispell flights
Medford to Billings flights
Boise to Bozeman flights
Boise to Billings flights
Redmond to Bozeman flights
Eugene to Kalispell flights
Medford to Bozeman flights
Eugene to Bozeman flights
Boise to Missoula flights
Boise to Helena flights
Portland to Butte flights
Eugene to Great Falls flights
Boise to Cody flights
Redmond to Missoula flights
Redmond to Helena flights
Eugene to Billings flights
Boise to Butte flights
Yakima to Kalispell flights
Medford to Great Falls flights
Yakima to Helena flights
Yakima to Missoula flights
Redmond to Great Falls flights

Top 2 airlines flying from Portland to Helena

Discover the top 2 airlines that operate flights from Portland to Helena. 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 May 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$278Average$398FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$287Average$435FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.