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 70% 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 and Delta 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 February 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.

$111 Cheap Flights from Portland to Helena in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

11:59 am - 5:45 pm

PDX

HLN

4h 46m

1 stop

4:43 pm - 9:28 pm

HLN

PDX

5h 45m

1 stop

$281Alaska Airlines

Mon, May 11 - Thu, May 14

9:00 am - 5:45 pm

PDX

HLN

7h 45m

1 stop

6:22 pm - 11:44 pm

HLN

PDX

6h 22m

1 stop

$286Alaska Airlines

Tue, Apr 7 - Fri, Apr 10

7:00 am - 5:45 pm

PDX

HLN

33h 45m

2 stops

4:43 pm - 9:28 pm

HLN

PDX

5h 45m

1 stop

$340Alaska Airlines

Mon, May 11 - Thu, May 14

2:34 pm - 5:45 pm

PDX

HLN

26h 11m

2 stops

6:22 pm - 11:44 pm

HLN

PDX

6h 22m

1 stop

$344Alaska Airlines

Tue, Apr 7 - Fri, Apr 10

6:00 am - 5:45 pm

PDX

HLN

10h 45m

1 stop

6:22 pm - 8:10 am

HLN

PDX

14h 48m

1 stop

$348Alaska Airlines

Thu, Mar 26 - Mon, Mar 30

5:10 am - 4:22 pm

PDX

HLN

10h 12m

1 stop

4:59 pm - 10:39 pm

HLN

PDX

6h 40m

1 stop

$375Alaska Airlines

Tue, Jun 23 - Tue, Jun 30

9:00 am - 5:45 pm

PDX

HLN

7h 45m

1 stop

6:22 pm - 9:50 am

HLN

PDX

40h 28m

2 stops

$381Alaska Airlines

Thu, Mar 26 - Mon, Mar 30

10:30 am - 3:59 pm

PDX

HLN

4h 29m

1 stop

4:36 pm - 9:10 pm

HLN

PDX

5h 34m

1 stop

$388Alaska Airlines

Sat, Mar 7 - Wed, Mar 11

6:15 am - 4:22 pm

PDX

HLN

9h 07m

1 stop

4:59 pm - 9:35 pm

HLN

PDX

5h 36m

1 stop

$409Alaska Airlines

Mon, Jun 15 - Fri, Jun 19

9:00 am - 4:22 pm

PDX

HLN

6h 22m

1 stop

4:59 pm - 8:49 pm

HLN

PDX

28h 50m

2 stops

$415Alaska Airlines

Tue, Jun 23 - Tue, Jun 30

Delta flights from Portland to Helena

Our best Delta deals on Portland to Helena flight tickets

Delta

Mar 23

PDX7:45 pmPortland

15h 36m

2 stops

HLN12:21 pmHelena

Mar 25

HLN1:02 pmHelena

8h 57m

2 stops

PDX8:59 pmPortland

$443

Delta

Mar 7

PDX5:25 pmPortland

4h 02m

1 stop

HLN10:27 pmHelena

Mar 11

HLN1:02 pmHelena

6h 13m

1 stop

PDX6:15 pmPortland

$495

Delta

Mar 25

PDX5:45 amPortland

5h 36m

1 stop

HLN12:21 pmHelena

Mar 26

HLN5:30 amHelena

4h 34m

1 stop

PDX9:04 amPortland

$573

Alaska Airlines flights from Portland to Helena

Our best Alaska Airlines deals on Portland to Helena flight tickets

Alaska Airlines

May 11

PDX11:59 amPortland

4h 46m

1 stop

HLN5:45 pmHelena

May 14

HLN4:43 pmHelena

5h 45m

1 stop

PDX9:28 pmPortland

$281

Alaska Airlines

Apr 7

PDX9:00 amPortland

7h 45m

1 stop

HLN5:45 pmHelena

Apr 10

HLN6:22 pmHelena

6h 22m

1 stop

PDX11:44 pmPortland

$286

Alaska Airlines

May 11

PDX7:00 amPortland

33h 45m

2 stops

HLN5:45 pmHelena

May 14

HLN4:43 pmHelena

5h 45m

1 stop

PDX9:28 pmPortland

$340

Fly from

Fly to

Route

Depart

Return

Price

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 5/11

11:59 am-5:45 pm

1 stop4h 46m

Helena

Thu 5/14

4:43 pm-9:28 pm

1 stop5h 45m

$281

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 4/7

9:00 am-5:45 pm

1 stop7h 45m

Helena

Fri 4/10

6:22 pm-11:44 pm

1 stop6h 22m

$286

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 5/11

7:00 am-5:45 pm

2 stops33h 45m

Helena

Thu 5/14

4:43 pm-9:28 pm

1 stop5h 45m

$340

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 4/7

2:34 pm-5:45 pm

2 stops26h 11m

Helena

Fri 4/10

6:22 pm-11:44 pm

1 stop6h 22m

$344

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 3/26

6:00 am-5:45 pm

1 stop10h 45m

Helena

Mon 3/30

6:22 pm-8:10 am

1 stop14h 48m

$348

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 6/23

5:10 am-4:22 pm

1 stop10h 12m

Helena

Tue 6/30

4:59 pm-10:39 pm

1 stop6h 40m

$375

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 3/26

9:00 am-5:45 pm

1 stop7h 45m

Helena

Mon 3/30

6:22 pm-9:50 am

2 stops40h 28m

$381

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 3/7

10:30 am-3:59 pm

1 stop4h 29m

Helena

Wed 3/11

4:36 pm-9:10 pm

1 stop5h 34m

$388

PortlandHelena

PDX - HLN

PDXHLN

Portland

Mon 6/15

6:15 am-4:22 pm

1 stop9h 07m

Helena

Fri 6/19

4:59 pm-9:35 pm

1 stop5h 36m

$409

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 6/23

9:00 am-4:22 pm

1 stop6h 22m

Helena

Tue 6/30

4:59 pm-8:49 pm

2 stops28h 50m

$415

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 October, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $376.

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 27m
Direct flights	None

The fastest flight from Portland to Helena takes 4h 27m

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

Search flight deals

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 27m.
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 February 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 50% of all bookings. The subsequent popular airline is Delta at 50%.

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 8,215 reviews		Search Delta flights
Alaska Airlines	PriceFrom $304	Free Cancellation	Rating 8.0 11,907 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.