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Helena

$323+ Cheap flights from Portland to Helena (PDX - HLN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — HLN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 September 11, 2025.

Round-trip from

$323
(Alaska Airlines)

Popular in

August

Cheapest in

January

Average price

$443
From Portland to Helena
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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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 September 11, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Mon 11/105:30 pmPDX - HLN
1 stop23h 06mAlaska Airlines
Fri 11/146:13 pmHLN - PDX
1 stop17h 19mAlaska Airlines
Deal found 9/10$323
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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 10/35:47 pmPDX - HLN
1 stop22h 54mAlaska Airlines
Mon 10/66:18 pmHLN - PDX
1 stop15h 42mAlaska Airlines
Deal found 9/10$343
This Delta deal was found by Cheapflights users on 9/10. 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 9/255:10 pmPDX - HLN
1 stop4h 04mDelta
Sun 9/285:45 amHLN - PDX
1 stop4h 10mDelta
Deal found 9/10$521
This United Airlines deal was found by Cheapflights users on 9/9. 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 9/255:15 pmPDX - HLN
2 stops22h 25mUnited Airlines
Mon 9/295:18 pmHLN - PDX
1 stop17h 11mUnited Airlines
Deal found 9/9$635
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Mon 9/226:27 pmPDX - HLN
1 stop20h 37mUnited Airlines
Sun 9/285:18 pmHLN - PDX
1 stop17h 11mUnited Airlines
Deal found 9/9$665
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/255:15 pmPDX - HLN
2 stops22h 25mUnited Airlines
Sun 9/285:18 pmHLN - PDX
1 stop25h 03mUnited Airlines
Deal found 9/10$707

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 September 11, 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

Mon 11/10

5:30 pm-5:36 pm

1 stop23h 06m

Helena

Fri 11/14

6:13 pm-10:32 am

1 stop17h 19m

$323

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 10/3

5:47 pm-5:41 pm

1 stop22h 54m

Helena

Mon 10/6

6:18 pm-9:00 am

1 stop15h 42m

$343

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 9/25

5:10 pm-10:14 pm

1 stop4h 04m

Helena

Mon 9/29

5:45 am-8:55 am

1 stop4h 10m

$521

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 9/25

5:10 pm-10:14 pm

1 stop4h 04m

Helena

Sun 9/28

5:45 am-8:55 am

1 stop4h 10m

$600

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 9/25

5:15 pm-4:40 pm

2 stops22h 25m

Helena

Mon 9/29

5:18 pm-9:29 am

1 stop17h 11m

$635

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 9/22

6:27 pm-4:04 pm

1 stop20h 37m

Helena

Sun 9/28

5:18 pm-9:29 am

1 stop17h 11m

$665

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 9/25

5:15 pm-4:40 pm

2 stops22h 25m

Helena

Sun 9/28

5:18 pm-5:21 pm

1 stop25h 03m

$707

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 11/26

5:30 am-12:26 pm

1 stop5h 56m

Helena

Sun 11/30

5:33 am-9:04 am

1 stop4h 31m

$733

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sun 9/21

9:40 am-3:21 pm

1 stop4h 41m

$379

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 9/19

10:36 am-3:21 pm

1 stop3h 45m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 16 results
1
2

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 May is currently the most expensive (average of $517). 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 September 11, 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
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 4h 04m. The time it takes to get you to your destination can typically vary by up to 19h 02m. 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 $287. Another airline that can offer you cheap pricing is Delta. You may be able to fly from Portland to Helena for 29% 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, 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 May is currently the most expensive (average of $517). 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

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$287Average$422FlexibilityNo cancel feeOn-time75%
DeltaCheapest$288Average$424FlexibilityNo cancel feeOn-timeN/A

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