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 74% 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 January 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.

$153 Cheap Flights from Portland to Helena in 2026

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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.

8:10 am - 6:11 pm

PDX

HLN

9h 01m1 stop

6:48 pm - 9:29 am

HLN

PDX

15h 41m1 stop

$223Alaska Airlines

Sat, Feb 7 - Tue, Feb 10

1:36 pm - 3:59 pm

PDX

HLN

25h 23m1 stop

4:36 pm - 10:46 am

HLN

PDX

19h 10m1 stop

$243Alaska Airlines

Fri, Feb 20 - Fri, Feb 27

9:10 am - 6:11 pm

PDX

HLN

8h 01m1 stop

6:48 pm - 10:46 pm

HLN

PDX

4h 58m1 stop

$245Alaska Airlines

Sat, Feb 7 - Tue, Feb 10

3:52 pm - 3:59 pm

PDX

HLN

23h 07m1 stop

4:36 pm - 10:46 am

HLN

PDX

19h 10m1 stop

$255Alaska Airlines

Tue, Mar 10 - Fri, Mar 13

11:28 am - 3:59 pm

PDX

HLN

27h 31m2 stops

4:36 pm - 8:49 am

HLN

PDX

17h 13m1 stop

$261Hawaiian Airlines

Fri, Feb 20 - Fri, Feb 27

7:10 am - 6:11 pm

PDX

HLN

10h 01m1 stop

6:48 pm - 4:49 pm

HLN

PDX

23h 01m2 stops

$262Alaska Airlines

Sat, Feb 7 - Tue, Feb 10

9:10 am - 6:11 pm

PDX

HLN

8h 01m1 stop

6:48 pm - 9:49 am

HLN

PDX

40h 01m2 stops

$302Alaska Airlines

Sat, Feb 7 - Tue, Feb 10

9:40 pm - 3:59 pm

PDX

HLN

17h 19m2 stops

4:36 pm - 10:46 am

HLN

PDX

19h 10m1 stop

$303Alaska Airlines

Tue, Mar 3 - Sat, Mar 14

7:10 am - 6:11 pm

PDX

HLN

10h 01m1 stop

6:48 pm - 10:46 pm

HLN

PDX

4h 58m1 stop

$305Alaska Airlines

Thu, Jan 29 - Sun, Feb 1

11:28 am - 3:59 pm

PDX

HLN

27h 31m2 stops

4:36 pm - 4:47 pm

HLN

PDX

25h 11m2 stops

$320Alaska Airlines

Fri, Feb 20 - Fri, Feb 27

Alaska Airlines flights from Portland to Helena

Our best Alaska Airlines deals on Portland to Helena flight tickets

Alaska Airlines

Feb 7

PDX8:10 amPortland

9h 01m

1 stop

HLN6:11 pmHelena

Feb 10

HLN6:48 pmHelena

15h 41m

1 stop

PDX9:29 amPortland

$223

Find similar

Alaska Airlines

Feb 20

PDX1:36 pmPortland

25h 23m

1 stop

HLN3:59 pmHelena

Feb 27

HLN4:36 pmHelena

19h 10m

1 stop

PDX10:46 amPortland

$243

Find similar

Alaska Airlines

Feb 7

PDX9:10 amPortland

8h 01m

1 stop

HLN6:11 pmHelena

Feb 10

HLN6:48 pmHelena

4h 58m

1 stop

PDX10:46 pmPortland

$245

Find similar

Delta flights from Portland to Helena

Our best Delta deals on Portland to Helena flight tickets

Delta

Feb 12

PDX5:45 amPortland

5h 40m

1 stop

HLN12:25 pmHelena

Feb 15

HLN5:30 amHelena

4h 45m

1 stop

PDX9:15 amPortland

$510

Find similar

Delta

Jan 19

PDX5:50 amPortland

5h 37m

1 stop

HLN12:27 pmHelena

Jan 23

HLN5:30 amHelena

4h 39m

1 stop

PDX9:09 amPortland

$537

Find similar

Delta

Feb 13

PDX5:45 amPortland

5h 40m

1 stop

HLN12:25 pmHelena

Feb 15

HLN5:30 amHelena

4h 45m

1 stop

PDX9:15 amPortland

$550

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 2/7

8:10 am-6:11 pm

1 stop9h 01m

Helena

Tue 2/10

6:48 pm-9:29 am

1 stop15h 41m

$223

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 2/20

1:36 pm-3:59 pm

1 stop25h 23m

Helena

Fri 2/27

4:36 pm-10:46 am

1 stop19h 10m

$243

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 2/7

9:10 am-6:11 pm

1 stop8h 01m

Helena

Tue 2/10

6:48 pm-10:46 pm

1 stop4h 58m

$245

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 3/10

3:52 pm-3:59 pm

1 stop23h 07m

Helena

Fri 3/13

4:36 pm-10:46 am

1 stop19h 10m

$255

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 2/20

11:28 am-3:59 pm

2 stops27h 31m

Helena

Fri 2/27

4:36 pm-8:49 am

1 stop17h 13m

$261

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 2/7

7:10 am-6:11 pm

1 stop10h 01m

Helena

Tue 2/10

6:48 pm-4:49 pm

2 stops23h 01m

$262

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 2/7

9:10 am-6:11 pm

1 stop8h 01m

Helena

Tue 2/10

6:48 pm-9:49 am

2 stops40h 01m

$302

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 3/3

9:40 pm-3:59 pm

2 stops17h 19m

Helena

Sat 3/14

4:36 pm-10:46 am

1 stop19h 10m

$303

PortlandHelena

PDX - HLN

PDXHLN

Portland

Thu 1/29

7:10 am-6:11 pm

1 stop10h 01m

Helena

Sun 2/1

6:48 pm-10:46 pm

1 stop4h 58m

$305

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 2/20

11:28 am-3:59 pm

2 stops27h 31m

Helena

Fri 2/27

4:36 pm-4:47 pm

2 stops25h 11m

$320

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 March is also cheap. Prices for this month can be found on momondo for an average of $342.

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	5h 19m
Direct flights	None

The fastest flight from Portland to Helena takes 5h 19m

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 5h 19m.
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 January 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 55% of all bookings. The subsequent popular airline is Delta at 45%.

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 $184	Free Cancellation	Rating 7.9 8,017 reviews		Search Delta flights
Alaska Airlines	PriceFrom $304	Free Cancellation	Rating 8.0 11,648 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.