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$635+ Cheap flights from Portland, ME to Helena (PWM - 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — HLN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Portland to Helena

Best flights from Portland to Helena
Discover carefully curated flight deals from Portland to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/10. 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.
Fri 1/308:40 amPWM - HLN
2 stops14h 46mUnited Airlines
Tue 2/32:27 pmHLN - PWM
2 stops22h 12mUnited Airlines
Deal found 12/10$635

Find flight deals from Portland to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) 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 12, 2025.

Most accurate provider

eDreams
3 stars

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eDreams
3 stars

Round-trip from

$635
(United Airlines)
Provider with most accurate pricing for Boston Logan Intl-Helena flight deals.
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From Portland to Helena
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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 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

PWM - HLN

PWMHLN

Portland

Fri 1/30

8:40 am-9:26 pm

2 stops14h 46m

Helena

Tue 2/3

2:27 pm-2:39 pm

2 stops22h 12m

$635

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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, Maine to Helena?

Currently, December is the cheapest month in which you can book a flight from Portland, Maine to Helena (average of $140). Flying from Portland, Maine to Helena in September is currently the most expensive (average of $247). 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.

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, Maine to Helena?

    United Airlines can get you from Portland, Maine to Helena in just under 14h 46m. Your travel time can differ by up to . Portland, Maine and Helena are separated by a distance of 2017 mi.

  • 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, Maine to Helena?

    Currently, December is the cheapest month in which you can book a flight from Portland, Maine to Helena (average of $140). Flying from Portland, Maine to Helena in September is currently the most expensive (average of $247). 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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