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 73% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 4 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?

Alaska Airlines is the most popular carrier 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 April 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.

$220 Cheap Flights from Portland to Helena in 2026

Q: What is the typical price of a round-trip flight between Portland and Helena?

Prices are currently low for flights on this route. Typical prices usually range from $457 to $417. The lowest price recently found on this route was $309.

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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.

11:59 am - 5:45 pm

PDX

HLN

4h 46m

1 stop

6:22 pm - 10:53 pm

HLN

PDX

5h 31m

1 stop

$309Alaska Airlines

Tue, May 5 - Sat, May 9

5:45 am - 12:24 pm

PDX

HLN

5h 39m

1 stop

5:40 am - 8:56 am

HLN

PDX

4h 16m

1 stop

$329Delta

Wed, Apr 29 - Sat, May 2

5:45 am - 12:23 pm

PDX

HLN

5h 38m

1 stop

5:45 am - 8:52 am

HLN

PDX

4h 07m

1 stop

$334Delta

Wed, May 20 - Tue, May 26

11:59 am - 5:45 pm

PDX

HLN

4h 46m

1 stop

6:22 pm - 1:13 pm

HLN

PDX

19h 51m

2 stops

$346Alaska Airlines

Tue, May 5 - Sat, May 9

9:49 am - 5:45 pm

PDX

HLN

6h 56m

1 stop

6:22 pm - 8:01 am

HLN

PDX

14h 39m

1 stop

$373Alaska Airlines

Thu, Apr 30 - Sat, May 2

11:59 am - 5:45 pm

PDX

HLN

4h 46m

1 stop

6:22 pm - 9:31 pm

HLN

PDX

4h 09m

1 stop

$374Alaska Airlines

Fri, May 1 - Tue, May 5

5:00 am - 4:06 pm

PDX

HLN

10h 06m

1 stop

4:43 pm - 1:41 pm

HLN

PDX

21h 58m

2 stops

$376Alaska Airlines

Thu, May 28 - Wed, Jun 3

11:59 am - 5:45 pm

PDX

HLN

4h 46m

1 stop

6:22 pm - 1:47 pm

HLN

PDX

20h 25m

2 stops

$389Alaska Airlines

Fri, May 1 - Tue, May 5

11:59 am - 5:45 pm

PDX

HLN

4h 46m

1 stop

6:22 pm - 1:13 pm

HLN

PDX

19h 51m

2 stops

$392Alaska Airlines

Sat, May 9 - Mon, May 11

5:00 am - 4:06 pm

PDX

HLN

10h 06m

1 stop

4:43 pm - 9:47 am

HLN

PDX

18h 04m

1 stop

$398Alaska Airlines

Wed, May 20 - Tue, May 26

Alaska Airlines flights from Portland to Helena

Our best Alaska Airlines deals on Portland to Helena flight tickets

Alaska Airlines

May 5

PDX11:59 amPortland

4h 46m

1 stop

HLN5:45 pmHelena

May 9

HLN6:22 pmHelena

5h 31m

1 stop

PDX10:53 pmPortland

$309

Alaska Airlines

May 5

PDX11:59 amPortland

4h 46m

1 stop

HLN5:45 pmHelena

May 9

HLN6:22 pmHelena

19h 51m

2 stops

PDX1:13 pmPortland

$346

Alaska Airlines

Apr 30

PDX9:49 amPortland

6h 56m

1 stop

HLN5:45 pmHelena

May 2

HLN6:22 pmHelena

14h 39m

1 stop

PDX8:01 amPortland

$373

Delta flights from Portland to Helena

Our best Delta deals on Portland to Helena flight tickets

Delta

Apr 29

PDX5:45 amPortland

5h 39m

1 stop

HLN12:24 pmHelena

May 2

HLN5:40 amHelena

4h 16m

1 stop

PDX8:56 amPortland

$329

Delta

May 20

PDX5:45 amPortland

5h 38m

1 stop

HLN12:23 pmHelena

May 26

HLN5:45 amHelena

4h 07m

1 stop

PDX8:52 amPortland

$334

Delta

May 21

PDX5:05 pmPortland

4h 28m

1 stop

HLN10:33 pmHelena

May 26

HLN5:45 amHelena

4h 07m

1 stop

PDX8:52 amPortland

$404

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 5/5

11:59 am-5:45 pm

1 stop4h 46m

Helena

Sat 5/9

6:22 pm-10:53 pm

1 stop5h 31m

$309

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 4/29

5:45 am-12:24 pm

1 stop5h 39m

Helena

Sat 5/2

5:40 am-8:56 am

1 stop4h 16m

$329

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 5/20

5:45 am-12:23 pm

1 stop5h 38m

Helena

Tue 5/26

5:45 am-8:52 am

1 stop4h 07m

$334

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 5/5

11:59 am-5:45 pm

1 stop4h 46m

Helena

Sat 5/9

6:22 pm-1:13 pm

2 stops19h 51m

$346

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 4/30

9:49 am-5:45 pm

1 stop6h 56m

Helena

Sat 5/2

6:22 pm-8:01 am

1 stop14h 39m

$373

Quickest round-trip

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 5/1

11:59 am-5:45 pm

1 stop4h 46m

Helena

Tue 5/5

6:22 pm-9:31 pm

1 stop4h 09m

$374

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 5/28

5:00 am-4:06 pm

1 stop10h 06m

Helena

Wed 6/3

4:43 pm-1:41 pm

2 stops21h 58m

$376

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 5/1

11:59 am-5:45 pm

1 stop4h 46m

Helena

Tue 5/5

6:22 pm-1:47 pm

2 stops20h 25m

$389

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 5/9

11:59 am-5:45 pm

1 stop4h 46m

Helena

Mon 5/11

6:22 pm-1:13 pm

2 stops19h 51m

$392

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 5/20

5:00 am-4:06 pm

1 stop10h 06m

Helena

Tue 5/26

4:43 pm-9:47 am

1 stop18h 04m

$398

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 typical price of a round-trip flight between Portland and Helena?

What is the cheapest month to fly to Helena?

If you aren’t able to travel to Helena during the month of October, 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

Fastest flight time	4h 17m
Direct flights	None

The fastest flight from Portland to Helena takes 4h 17m

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 17m.
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 April 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 60% of all bookings. The subsequent popular airline is Delta at 40%.

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 7.9 8,408 reviews		Search Delta flights
Alaska Airlines	PriceFrom $335	Free Cancellation	Rating 7.9 12,222 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.