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 78% 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 June 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.

$228 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 $428 to $376. The lowest price recently found on this route was $333.

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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.

10:45 am - 4:04 pm

PDX

HLN

4h 19m

1 stop

4:41 pm - 7:41 pm

HLN

PDX

4h 00m

1 stop

$333Alaska Airlines

Sat, Nov 14 - Wed, Nov 18

5:45 am - 12:15 pm

PDX

HLN

5h 30m

1 stop

5:40 am - 8:37 am

HLN

PDX

3h 57m

1 stop

$384Delta

Tue, Aug 18 - Fri, Aug 21

8:14 am - 4:41 pm

PDX

HLN

7h 27m

1 stop

5:18 pm - 8:47 pm

HLN

PDX

4h 29m

1 stop

$393Alaska Airlines

Fri, Sep 25 - Sun, Sep 27

12:03 pm - 4:32 pm

PDX

HLN

3h 29m

1 stop

5:32 pm - 8:11 am

HLN

PDX

15h 39m

1 stop

$394Alaska Airlines

Tue, Aug 18 - Fri, Aug 21

8:35 pm - 4:34 pm

PDX

HLN

18h 59m

2 stops

5:11 pm - 7:50 pm

HLN

PDX

3h 39m

1 stop

$404Alaska Airlines

Wed, Aug 26 - Sat, Aug 29

5:36 pm - 4:34 pm

PDX

HLN

21h 58m

2 stops

5:32 pm - 10:01 pm

HLN

PDX

5h 29m

1 stop

$411Alaska Airlines

Tue, Aug 18 - Fri, Aug 21

9:28 am - 4:11 pm

PDX

HLN

5h 43m

1 stop

4:41 pm - 4:34 pm

HLN

PDX

24h 53m

2 stops

$413Alaska Airlines

Sat, Oct 31 - Wed, Nov 4

2:30 pm - 4:34 pm

PDX

HLN

25h 04m

2 stops

5:32 pm - 10:01 pm

HLN

PDX

5h 29m

1 stop

$414Alaska Airlines

Tue, Aug 18 - Fri, Aug 21

7:12 am - 4:04 pm

PDX

HLN

7h 52m

2 stops

4:41 pm - 9:55 pm

HLN

PDX

6h 14m

1 stop

$418Alaska Airlines

Sat, Nov 14 - Wed, Nov 18

5:14 pm - 10:39 pm

PDX

HLN

4h 25m

1 stop

12:55 pm - 4:09 pm

HLN

PDX

4h 14m

1 stop

$435Delta

Tue, Jul 14 - Fri, Jul 17

Alaska Airlines flights from Portland to Helena

Our best Alaska Airlines deals on Portland to Helena flight tickets

Alaska Airlines

Nov 14

PDX10:45 amPortland

4h 19m

1 stop

HLN4:04 pmHelena

Nov 18

HLN4:41 pmHelena

6h 14m

1 stop

PDX9:55 pmPortland

$333

Alaska Airlines

Sep 25

PDX8:14 amPortland

7h 27m

1 stop

HLN4:41 pmHelena

Sep 27

HLN5:18 pmHelena

4h 29m

1 stop

PDX8:47 pmPortland

$393

Alaska Airlines

Aug 18

PDX12:03 pmPortland

3h 29m

1 stop

HLN4:32 pmHelena

Aug 21

HLN5:32 pmHelena

15h 39m

1 stop

PDX8:11 amPortland

$394

Delta flights from Portland to Helena

Our best Delta deals on Portland to Helena flight tickets

Delta

Aug 18

PDX5:45 amPortland

5h 30m

1 stop

HLN12:15 pmHelena

Aug 21

HLN5:40 amHelena

3h 57m

1 stop

PDX8:37 amPortland

$384

Delta

Jul 14

PDX5:14 pmPortland

4h 25m

1 stop

HLN10:39 pmHelena

Jul 17

HLN12:55 pmHelena

4h 14m

1 stop

PDX4:09 pmPortland

$435

Delta

Jul 14

PDX5:14 pmPortland

4h 25m

1 stop

HLN10:39 pmHelena

Jul 17

HLN12:55 pmHelena

4h 14m

1 stop

PDX4:09 pmPortland

$467

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 11/14

10:45 am-4:04 pm

1 stop4h 19m

Helena

Wed 11/18

4:41 pm-7:41 pm

1 stop4h 00m

$333

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 8/18

5:45 am-12:15 pm

1 stop5h 30m

Helena

Fri 8/21

5:40 am-8:37 am

1 stop3h 57m

$384

PortlandHelena

PDX - HLN

PDXHLN

Portland

Fri 9/25

8:14 am-4:41 pm

1 stop7h 27m

Helena

Sun 9/27

5:18 pm-8:47 pm

1 stop4h 29m

$393

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 8/18

12:03 pm-4:32 pm

1 stop3h 29m

Helena

Fri 8/21

5:32 pm-8:11 am

1 stop15h 39m

$394

PortlandHelena

PDX - HLN

PDXHLN

Portland

Wed 8/26

8:35 pm-4:34 pm

2 stops18h 59m

Helena

Sat 8/29

5:11 pm-7:50 pm

1 stop3h 39m

$404

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 8/18

5:36 pm-4:34 pm

2 stops21h 58m

Helena

Fri 8/21

5:32 pm-10:01 pm

1 stop5h 29m

$411

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 10/31

9:28 am-4:11 pm

1 stop5h 43m

Helena

Wed 11/4

4:41 pm-4:34 pm

2 stops24h 53m

$413

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 8/18

2:30 pm-4:34 pm

2 stops25h 04m

Helena

Fri 8/21

5:32 pm-10:01 pm

1 stop5h 29m

$414

PortlandHelena

PDX - HLN

PDXHLN

Portland

Sat 11/14

7:12 am-4:04 pm

2 stops7h 52m

Helena

Wed 11/18

4:41 pm-9:55 pm

1 stop6h 14m

$418

PortlandHelena

PDX - HLN

PDXHLN

Portland

Tue 7/14

5:14 pm-10:39 pm

1 stop4h 25m

Helena

Fri 7/17

12:55 pm-4:09 pm

1 stop4h 14m

$435

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 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 July, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $326.

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 07m
Direct flights	None

The fastest flight from Portland to Helena takes 4h 07m

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 07m.
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 June 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 68% of all bookings. The subsequent popular airline is Delta at 32%.

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 8,400 reviews		Search Delta flights
Alaska Airlines	PriceFrom $341	Free Cancellation	Rating 7.9 12,445 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.