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Helena

$148+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — HLN
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap 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 December 4, 2025.

This Delta deal was found by Cheapflights users on 12/1. 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 12/175:05 pmPDX - HLN
1 stop4h 25mDelta
Sun 12/215:30 amHLN - PDX
1 stop4h 38mDelta
Deal found 12/1$537
This Alaska Airlines deal was found by Cheapflights users on 12/1. 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.
Wed 12/177:25 amPDX - HLN
1 stop9h 26mAlaska Airlines
Sun 12/216:32 pmHLN - PDX
2 stops12h 46mAlaska Airlines
Deal found 12/1$590
This Alaska Airlines deal was found by Cheapflights users on 12/3. 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 12/189:26 amPDX - HLN
1 stop7h 29mAlaska Airlines
Mon 12/226:32 pmHLN - PDX
2 stops12h 46mAlaska Airlines
Deal found 12/3$644
This Expedia deal was found by Cheapflights users on 12/3. 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.
Thu 12/115:49 pmPDX - HLN
1 stop23h 02mAlaska Airlines
Sun 12/146:28 pmHLN - PDX
1 stop4h 59mAlaska Airlines
Deal found 12/3$810
This United Airlines deal was found by Cheapflights users on 12/3. 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 12/113:55 pmPDX - HLN
2 stops20h 52mUnited Airlines
Sun 12/146:30 amHLN - PDX
1 stop28h 08mUnited Airlines
Deal found 12/3$875
This Delta deal was found by Cheapflights users on 12/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:30 amPDX - HLN
1 stop5h 55mDelta
Sun 12/71:06 pmHLN - PDX
1 stop6h 08mDelta
Deal found 12/2$957
This Alaska Airlines deal was found by Cheapflights users on 12/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/52:50 pmPDX - HLN
2 stops26h 01mAlaska Airlines
Sun 12/76:28 pmHLN - PDX
1 stop4h 59mAlaska Airlines
Deal found 12/2$976

Find 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$224
(Alaska Airlines)

One-way from

$148
(Alaska Airlines)

Popular in

November

Cheapest in

January

Average price

$376
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. 5% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 4, 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

Sat 2/28

8:30 am-3:59 pm

1 stop6h 29m

Helena

Tue 3/3

4:36 pm-10:46 am

1 stop19h 10m

$224

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 1/17

1:38 pm-6:11 pm

1 stop3h 33m

Helena

Wed 1/21

6:48 pm-9:29 am

1 stop15h 41m

$224

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 1/17

5:50 am-12:27 pm

1 stop5h 37m

Helena

Wed 1/21

1:10 pm-8:33 am

2 stops20h 23m

$251

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 1/19

1:38 pm-6:11 pm

1 stop3h 33m

Helena

Wed 1/21

6:48 pm-10:46 pm

1 stop4h 58m

$287

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 12/17

5:05 pm-10:30 pm

1 stop4h 25m

Helena

Sun 12/21

5:30 am-9:08 am

1 stop4h 38m

$537

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 12/18

5:05 pm-10:30 pm

1 stop4h 25m

Helena

Mon 12/22

5:30 am-9:08 am

1 stop4h 38m

$537

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 1/12

10:30 am-6:11 pm

1 stop6h 41m

$148

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 1/12

1:35 pm-1:41 pm

3 stops23h 06m

$371

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Helena flight deals on Cheapflights vs. eDreams >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, August is the cheapest month in which you can book a flight from Portland to Helena (average of $135). Flying from Portland to Helena in July is currently the most expensive (average of $227). 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 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 December 4, 2025.
Read through reviews of airlines operating flights from Portland to Helena, such as Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,396 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Alaska Airlines
8.0
Very good
11,396 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Delta
7.9
Good
8,011 reviews
Alaska Airlines
8.0
Very good
11,396 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

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.

  • How long is the flight from Portland to Helena?

    Airlines like Alaska Airlines and Delta fly from Portland to Helena in about 5h 37m. The time it takes to get you to your destination can typically vary by up to 52m. Portland and Helena are separated by a distance of 512 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Portland to Helena round-trip from $158. Another airline that can offer you cheap pricing is Alaska Airlines. You may be able to fly from Portland to Helena for 64% less than the average price by searching for these airlines.

  • 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, August is the cheapest month in which you can book a flight from Portland to Helena (average of $135). Flying from Portland to Helena in July is currently the most expensive (average of $227). 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.

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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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$184Average$424FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$286Average$455FlexibilityNo cancel feeOn-time75%

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