What airlines fly to Helena?

Alaska Airlines, Delta and Hawaiian 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 75% 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, Alaska Airlines, and United 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 2025.

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.

$136 Cheap Flights from Portland to Helena in 2025/26

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Find the cheapest flights from Portland to Helena

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:10 pm - 10:16 pmPDX-HLN

4h 06m1 stop

5:45 am - 9:03 amHLN-PDX

4h 18m1 stop

$317Delta

Find Deal

Fri, Oct 31 - Sun, Nov 2

2:30 pm - 5:36 pmPDX-HLN

26h 06m1 stop

6:13 pm - 6:20 amHLN-PDX

37h 07m2 stops

$371Alaska Airlines

Find Deal

Fri, Oct 31 - Sun, Nov 2

10:00 pm - 5:41 pmPDX-HLN

18h 41m1 stop

6:18 pm - 10:45 pmHLN-PDX

5h 27m1 stop

$418Alaska Airlines

Find Deal

Fri, Oct 17 - Mon, Oct 20

6:00 pm - 5:41 pmPDX-HLN

22h 41m1 stop

6:18 pm - 11:07 amHLN-PDX

17h 49m2 stops

$450Alaska Airlines

Find Deal

Fri, Oct 17 - Mon, Oct 20

7:06 am - 5:36 pmPDX-HLN

9h 30m2 stops

6:13 pm - 6:20 amHLN-PDX

13h 07m2 stops

$480Alaska Airlines

Find Deal

Fri, Oct 31 - Sun, Nov 2

10:30 pm - 6:52 pmPDX-HLN

19h 22m1 stop

7:32 pm - 6:18 amHLN-PDX

11h 46m1 stop

$574Alaska Airlines

Find Deal

Sat, Nov 22 - Sat, Nov 29

7:00 am - 6:52 pmPDX-HLN

10h 52m2 stops

7:32 pm - 6:18 amHLN-PDX

11h 46m1 stop

$652Alaska Airlines

Find Deal

Sat, Nov 22 - Sat, Nov 29

7:00 am - 6:52 pmPDX-HLN

10h 52m2 stops

7:32 pm - 11:00 pmHLN-PDX

4h 28m1 stop

$712Alaska Airlines

Find Deal

Sat, Nov 22 - Sat, Nov 29

Alaska Airlines flights from Portland to Helena

Our best Alaska Airlines deals on Portland to Helena flight tickets

Alaska Airlines

Oct 31

PDX2:30 pmPortland

26h 06m

1 stop

HLN5:36 pmHelena

Nov 2

HLN6:13 pmHelena

37h 07m

2 stops

PDX6:20 amPortland

$371

Find similar

Alaska Airlines

Oct 17

PDX10:00 pmPortland

18h 41m

1 stop

HLN5:41 pmHelena

Oct 20

HLN6:18 pmHelena

5h 27m

1 stop

PDX10:45 pmPortland

$418

Find similar

Alaska Airlines

Oct 17

PDX6:00 pmPortland

22h 41m

1 stop

HLN5:41 pmHelena

Oct 20

HLN6:18 pmHelena

17h 49m

2 stops

PDX11:07 amPortland

$450

Find similar

United Airlines flights from Portland to Helena

Our best United Airlines deals on Portland to Helena flight tickets

United Airlines

Oct 10

PDX5:00 amPortland

10h 40m

1 stop

HLN4:40 pmHelena

Oct 12

HLN5:18 pmHelena

25h 03m

1 stop

PDX5:21 pmPortland

$745

Find similar

United Airlines

Oct 9

PDX5:00 amPortland

10h 40m

1 stop

HLN4:40 pmHelena

Oct 12

HLN5:18 pmHelena

28h 48m

1 stop

PDX9:06 pmPortland

$755

Find similar

United Airlines

Oct 10

PDX3:50 pmPortland

29h 24m

2 stops

HLN10:14 pmHelena

Oct 12

HLN5:18 pmHelena

25h 03m

1 stop

PDX5:21 pmPortland

$805

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 10/31

5:10 pm-10:16 pm

1 stop4h 06m

Helena

Sun 11/2

5:45 am-9:03 am

1 stop4h 18m

$317

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 10/31

2:30 pm-5:36 pm

1 stop26h 06m

Helena

Sun 11/2

6:13 pm-6:20 am

2 stops37h 07m

$371

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 10/17

10:00 pm-5:41 pm

1 stop18h 41m

Helena

Mon 10/20

6:18 pm-10:45 pm

1 stop5h 27m

$418

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 10/17

6:00 pm-5:41 pm

1 stop22h 41m

Helena

Mon 10/20

6:18 pm-11:07 am

2 stops17h 49m

$450

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 10/31

7:06 am-5:36 pm

2 stops9h 30m

Helena

Sun 11/2

6:13 pm-6:20 am

2 stops13h 07m

$480

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 11/22

10:30 pm-6:52 pm

1 stop19h 22m

Helena

Sat 11/29

7:32 pm-6:18 am

1 stop11h 46m

$574

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 11/22

7:00 am-6:52 pm

2 stops10h 52m

Helena

Sat 11/29

7:32 pm-6:18 am

1 stop11h 46m

$652

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 11/22

7:00 am-6:52 pm

2 stops10h 52m

Helena

Sat 11/29

7:32 pm-11:00 pm

1 stop4h 28m

$712

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 10/22

5:40 am-12:20 pm

1 stop5h 40m

$136

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 10/31

5:10 pm-10:16 pm

1 stop4h 06m

$159

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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 January, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $332.

What is the cheapest day to depart on your flight to Helena?

The cheapest day to depart from Portland to Helena is on a Saturday. Travelers who choose to depart for Helena on a Saturday will often find tickets for as low as $321. The most expensive day to fly to Helena is Monday, with ticket prices averaging around $611.

What is the cheapest time of day to depart on your flight to Helena?

According to our data, the cheapest time of day to fly to Helena is in the afternoon. momondo users have found flights departing from Portland to Helena in the afternoon for as low as $354. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the morning when prices are around $443.

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

Direct flights	None

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

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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 06m.
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 2025.
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 51% of all bookings. The subsequent popular airline is Delta at 49%.

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
Alaska Airlines	PriceFrom $287	Free Cancellation	Rating 8.0 10,000 reviews		Search Alaska Airlines flights
Delta	PriceFrom $288	Free Cancellation	Rating 7.9 7,961 reviews		Search Delta 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.