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Helena

$374+ 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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — HLN
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
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 (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 October 29, 2025.

Round-trip from

$374
(United Airlines)
From Portland to Helena
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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 October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 11/119:54 amPWM - HLN
2 stops13h 28mUnited Airlines
Sat 11/156:40 amHLN - PWM
1 stop7h 08mUnited Airlines
Deal found 10/27$374
This Delta deal was found by Cheapflights users on 10/27. 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.
Tue 12/912:53 pmPWM - HLN
2 stops11h 37mDelta
Sat 12/135:30 amHLN - PWM
2 stops14h 53mDelta
Deal found 10/27$467
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 12/96:00 amPWM - HLN
3 stops17h 22mUnited Airlines
Sat 12/132:30 pmHLN - PWM
2 stops16h 40mUnited Airlines
Deal found 10/27$529
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:00 amPWM - HLN
2 stops33h 27mUnited Airlines
Wed 12/36:30 amHLN - PWM
2 stops14h 39mUnited Airlines
Deal found 10/28$702
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Tue 12/26:00 amPWM - HLN
2 stops33h 47mUnited Airlines
Mon 12/82:30 pmHLN - PWM
2 stops16h 40mUnited Airlines
Deal found 10/27$742

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 October 29, 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

Tue 11/11

9:54 am-9:22 pm

2 stops13h 28m

Helena

Sat 11/15

6:40 am-11:17 pm

2 stops14h 37m

$379

PortlandHelena

PWM - HLN

PWMHLN

Portland

Tue 12/9

12:53 pm-10:30 pm

2 stops11h 37m

Helena

Sat 12/13

5:30 am-10:23 pm

2 stops14h 53m

$467

PortlandHelena

PWM - HLN

PWMHLN

Portland

Tue 12/9

6:00 am-9:22 pm

3 stops17h 22m

Helena

Sat 12/13

2:30 pm-9:10 am

2 stops16h 40m

$529

PortlandHelena

PWM - HLN

PWMHLN

Portland

Thu 11/27

6:00 am-1:27 pm

2 stops33h 27m

Helena

Wed 12/3

6:30 am-11:09 pm

2 stops14h 39m

$702

PortlandHelena

PWM - HLN

PWMHLN

Portland

Tue 12/2

6:00 am-1:47 pm

2 stops33h 47m

Helena

Mon 12/8

2:30 pm-9:10 am

2 stops16h 40m

$742

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

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, March is the cheapest month in which you can book a flight from Portland, Maine to Helena (average of $157). Flying from Portland, Maine to Helena in November is currently the most expensive (average of $258). 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 and Delta can get you from Portland, Maine to Helena in just under 11h 37m. Your travel time can differ by up to 1h 51m. Portland, Maine and Helena are separated by a distance of 2017 mi. This flight may include one or multiple stops.

  • 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, March is the cheapest month in which you can book a flight from Portland, Maine to Helena (average of $157). Flying from Portland, Maine to Helena in November is currently the most expensive (average of $258). 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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