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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 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$334
(Alaska Airlines)

One-way from

$179
(Delta)

Popular in

October

Cheapest in

January

Average price

$376
From Portland to Helena
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One-way flight from Portland to Helena
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Highest demand for flights based on searches. 14% potential increase in price ($72 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).
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Average for round-trip flights in June 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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 9/106:05 amPDX - HLN
1 stop8h 16mAlaska Airlines
Mon 9/154:02 pmHLN - PDX
2 stops8h 48mAlaska Airlines
Deal found 6/11$334
This Delta deal was found by Cheapflights users on 6/11. 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 9/115:55 amPDX - HLN
1 stop5h 29mDelta
Sun 9/145:40 amHLN - PDX
1 stop4h 33mDelta
Deal found 6/11$361
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1110:40 amPDX - HLN
1 stop3h 41mHawaiian Airlines
Sun 9/144:02 pmHLN - PDX
1 stop4h 08mHawaiian Airlines
Deal found 6/12$374
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 6/285:00 amPDX - HLN
1 stop10h 55mUnited Airlines
Sun 6/295:39 pmHLN - PDX
1 stop15h 03mUnited Airlines
Deal found 6/12$655
This United deal was found by Cheapflights users on 6/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/305:00 amPDX - HLN
1 stop7h 58mMultiple Airlines
Mon 6/304:09 pmHLN - PDX
1 stop19h 38mMultiple Airlines
Deal found 6/10$1,112

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 June 12, 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

Wed 9/10

6:05 am-3:21 pm

1 stop8h 16m

Helena

Mon 9/15

4:02 pm-11:50 pm

2 stops8h 48m

$334

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 6/25

5:06 pm-10:58 pm

1 stop4h 52m

Helena

Sun 6/29

5:44 am-8:55 am

1 stop4h 11m

$503

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 6/28

5:00 am-4:55 pm

1 stop10h 55m

Helena

Sun 6/29

5:39 pm-7:42 am

1 stop15h 03m

$655

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 6/30

5:00 am-1:58 pm

1 stop7h 58m

Helena

Mon 6/30

4:09 pm-10:47 am

1 stop19h 38m

$1,112

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 8/6

5:35 am-12:20 pm

1 stop5h 45m

$179

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 8/6

2:40 pm-3:31 pm

2 stops23h 51m

$296

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 6/30

7:35 pm-9:15 pm

3 stops24h 40m

$502

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 $555). 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 June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

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

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

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
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Food

7.1

Crew

8.5

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 $334. Other airlines that can offer you cheap pricing are Delta, from $361, and Hawaiian Airlines, from $374. 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 $296 and $502 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 $555). 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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Alternative routes for Portland to Helena

See prices for flight routes from nearby airports that may be better suited for you.
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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$278Average$398FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$287Average$427FlexibilityNo cancel feeOn-time75%

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