What airlines fly to Helena?

Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Helena from Portland according to our data. Alaska Airlines is the first choice among our users, with 85% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 3 different airlines that fly to Helena on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Portland to Helena?

Delta and Alaska Airlines are the most popular carriers operating from Portland to Helena

When did momondo last update prices for flights from Portland Airport to Helena Airport?

Prices for flights from Portland Airport to Helena Airport refresh daily.

How many operators does momondo search for flights from Portland Airport to Helena Airport?

The number of operators available for flights from Portland Airport to Helena Airport is 2 as of October 2026.

How old do you have to be to fly from Portland Airport to Helena Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Helena Airport.

What documentation or ID do you need to fly to Helena Airport?

The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$233 Cheap Flights from Portland to Helena in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Helena

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:30 am - 4:23 pmPDX Portland-HLN Helena

6h 53m1 stop Seattle/Tacoma Intl

5:00 pm - 11:53 pmHLN Helena-PDX Portland

7h 53m1 stop Seattle/Tacoma Intl

$413Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

5:32 pm - 4:12 pmPDX Portland-HLN Helena

21h 40m1 stop Seattle/Tacoma Intl

4:49 pm - 8:54 pmHLN Helena-PDX Portland

5h 05m1 stop Seattle/Tacoma Intl

$413Alaska Airlines

Tue, Dec 8 - Sat, Dec 12

10:30 am - 4:12 pmPDX Portland-HLN Helena

4h 42m1 stop Seattle/Tacoma Intl

4:49 pm - 11:55 pmHLN Helena-PDX Portland

8h 06m1 stop Seattle/Tacoma Intl

$413Alaska Airlines

Wed, Dec 9 - Wed, Dec 16

5:32 pm - 4:12 pmPDX Portland-HLN Helena

21h 40m1 stop Seattle/Tacoma Intl

4:49 pm - 8:54 pmHLN Helena-PDX Portland

5h 05m1 stop Seattle/Tacoma Intl

$413Alaska Airlines

Tue, Dec 8 - Tue, Dec 15

8:30 am - 4:12 pmPDX Portland-HLN Helena

6h 42m1 stop Seattle/Tacoma Intl

4:49 pm - 7:53 pmHLN Helena-PDX Portland

4h 04m1 stop Seattle/Tacoma Intl

$413Alaska Airlines

Wed, Dec 9 - Sat, Dec 12

5:32 pm - 4:12 pmPDX Portland-HLN Helena

21h 40m1 stop Seattle/Tacoma Intl

4:49 pm - 11:55 pmHLN Helena-PDX Portland

8h 06m1 stop Seattle/Tacoma Intl

$413Alaska Airlines

Tue, Dec 8 - Wed, Dec 16

2:15 pm - 12:30 pmPDX Portland-HLN Helena

21h 15m2 stops Seattle/Tacoma Intl Salt Lake City

1:10 pm - 8:58 pmHLN Helena-PDX Portland

8h 48m2 stops Salt Lake City Seattle/Tacoma Intl

$443Delta

Tue, Dec 8 - Sat, Dec 12

7:38 pm - 12:30 pmPDX Portland-HLN Helena

15h 52m2 stops Seattle/Tacoma Intl Salt Lake City

1:10 pm - 8:58 pmHLN Helena-PDX Portland

8h 48m2 stops Salt Lake City Seattle/Tacoma Intl

$454Delta

Mon, Dec 7 - Sat, Dec 12

5:59 pm - 12:30 pmPDX Portland-HLN Helena

17h 31m2 stops Seattle/Tacoma Intl Salt Lake City

1:10 pm - 8:33 amHLN Helena-PDX Portland

20h 23m2 stops Salt Lake City Seattle/Tacoma Intl

$468Delta

Tue, Dec 8 - Sun, Dec 13

2:15 pm - 12:30 pmPDX Portland-HLN Helena

21h 15m2 stops Seattle/Tacoma Intl Salt Lake City

1:10 pm - 6:54 pmHLN Helena-PDX Portland

6h 44m2 stops Salt Lake City Seattle/Tacoma Intl

$469Delta

Thu, Dec 10 - Sat, Dec 12

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Alaska Airlines flights from Portland to Helena

Our best Alaska Airlines deals on Portland to Helena flight tickets

Alaska Airlines

Jan 30

PDX8:30 amPortland

6h 53m

1 stop

HLN4:23 pmHelena

Feb 2

HLN5:00 pmHelena

7h 53m

1 stop

PDX11:53 pmPortland

$413

Alaska Airlines

Dec 8

PDX11:35 amPortland

27h 37m

2 stops

HLN4:12 pmHelena

Dec 12

HLN4:49 pmHelena

25h 07m

1 stop

PDX4:56 pmPortland

$420

Alaska Airlines

Jan 30

PDX6:25 amPortland

8h 58m

1 stop

HLN4:23 pmHelena

Feb 2

HLN5:00 pmHelena

21h 48m

2 stops

PDX1:48 pmPortland

$421

Delta flights from Portland to Helena

Our best Delta deals on Portland to Helena flight tickets

Delta

Dec 8

PDX2:15 pmPortland

21h 15m

2 stops

HLN12:30 pmHelena

Dec 12

HLN1:10 pmHelena

8h 48m

2 stops

PDX8:58 pmPortland

$443

Delta

Dec 7

PDX7:38 pmPortland

15h 52m

2 stops

HLN12:30 pmHelena

Dec 12

HLN1:10 pmHelena

8h 48m

2 stops

PDX8:58 pmPortland

$454

Delta

Dec 8

PDX5:59 pmPortland

17h 31m

2 stops

HLN12:30 pmHelena

Dec 13

HLN1:10 pmHelena

20h 23m

2 stops

PDX8:33 amPortland

$468

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Sat 1/30

8:30 am-4:23 pm

1 stop6h 53m

Helena

Tue 2/2

5:00 pm-11:53 pm

1 stop7h 53m

$413

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Tue 12/8

5:32 pm-4:12 pm

1 stop21h 40m

Helena

Sat 12/12

4:49 pm-8:54 pm

1 stop5h 05m

$413

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Wed 12/9

10:30 am-4:12 pm

1 stop4h 42m

Helena

Wed 12/16

4:49 pm-11:55 pm

1 stop8h 06m

$413

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Tue 12/8

5:32 pm-4:12 pm

1 stop21h 40m

Helena

Tue 12/15

4:49 pm-8:54 pm

1 stop5h 05m

$413

Quickest round-trip

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Wed 12/9

8:30 am-4:12 pm

1 stop6h 42m

Helena

Sat 12/12

4:49 pm-7:53 pm

1 stop4h 04m

$413

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Tue 12/8

5:32 pm-4:12 pm

1 stop21h 40m

Helena

Wed 12/16

4:49 pm-11:55 pm

1 stop8h 06m

$413

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Tue 12/8

2:15 pm-12:30 pm

2 stops21h 15m

Helena

Sat 12/12

1:10 pm-8:58 pm

2 stops8h 48m

$443

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Mon 12/7

7:38 pm-12:30 pm

2 stops15h 52m

Helena

Sat 12/12

1:10 pm-8:58 pm

2 stops8h 48m

$454

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Tue 12/8

5:59 pm-12:30 pm

2 stops17h 31m

Helena

Sun 12/13

1:10 pm-8:33 am

2 stops20h 23m

$468

PortlandHelena

PDX Portland - HLN Helena

PDXHLN

Portland

Thu 12/10

2:15 pm-12:30 pm

2 stops21h 15m

Helena

Sat 12/12

1:10 pm-6:54 pm

2 stops6h 44m

$469

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Helena

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Helena?

If you aren’t able to travel to Helena during the month of November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $367.

When to book flights from Portland to Helena

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Helena according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Helena (PDX to HLN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Helena

Best Price Found	$233
Fastest flight time	4h 09m
Direct flights	None

The best one-way flight to Helena from Portland in the past 72 hours is $233. The best round-trip flight deal from Portland to Helena found on momondo in the last 72 hours is $413.

The fastest flight from Portland to Helena takes 4h 09m

There are no direct flights from Portland to Helena. There are no popular flight routes from Portland to Helena.

Search flight deals

Frequently asked questions about flying from Portland to Helena

How far is Portland to Helena by plane?
Helena is 514.7 mi away from Portland. A reasonable flight in good conditions will take 4h 09m.
When did momondo last update prices for flights from Portland Airport to Helena Airport?
Prices for flights from Portland Airport to Helena Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to Helena Airport?
The number of operators available for flights from Portland Airport to Helena Airport is 2 as of October 2026.
How old do you have to be to fly from Portland Airport to Helena Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Portland to Helena?
momondo data reveals that the most frequently booked airline on the route from Portland to Helena is Alaska Airlines, representing 73% of all bookings. The subsequent popular airline is Delta at 27%.

Best airlines flying from Portland to Helena

Compare and see reviews for airlines that fly from Portland to Helena with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $158	Free Cancellation	Rating 7.8 8,681 reviews		Search Delta flights
Alaska Airlines	PriceFrom $367	Free Cancellation	Rating 7.9 13,121 reviews		Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Helena?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Helena from Portland.

Can I find flights from Portland to Helena with flexible booking policies on momondo?

Flights from Portland to Helena with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portland to Helena?

momondo helps you find the best flight between Portland and Helena by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Portland to Helena right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Helena from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.