What airlines fly to Portland?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Portland from Helena 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 Portland. Keep in mind that there are 3 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Helena Airport to Portland Airport?

Prices for flights from Helena Airport to Portland Airport were last updated today.

How many operators does momondo search for flights from Helena Airport to Portland Airport?

The number of operators available for flights from Helena Airport to Portland Airport is 2 as of November 2025.

How old do you have to be to fly from Helena Airport to Portland 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 Helena Airport to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The required travel and health documents for your Portland 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 Portland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$134 Cheap Flights from Helena to Portland in 2025/26

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

Prices are currently low for flights on this route. Typical prices usually range from $441 to $539. The lowest price recently found on this route was $245.

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Find the cheapest flights from Helena to Portland

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:59 pm - 10:46 pmHLN-PDX

5h 47m1 stop

9:30 pm - 5:22 pmPDX-HLN

18h 52m1 stop

$245Alaska Airlines

Find Deal

Thu, Jan 15 - Sun, Jan 18

6:28 pm - 1:50 pmHLN-PDX

20h 22m1 stop

10:40 am - 5:51 pmPDX-HLN

6h 11m1 stop

$253Alaska Airlines

Find Deal

Mon, Dec 8 - Sun, Dec 14

5:30 am - 9:10 amHLN-PDX

4h 40m1 stop

5:30 am - 12:25 pmPDX-HLN

5h 55m1 stop

$255Delta

Find Deal

Thu, Dec 11 - Tue, Dec 16

5:30 am - 9:10 amHLN-PDX

4h 40m1 stop

5:30 am - 12:25 pmPDX-HLN

5h 55m1 stop

$277Delta

Find Deal

Thu, Dec 11 - Fri, Dec 12

5:59 pm - 6:20 amHLN-PDX

37h 21m2 stops

7:10 am - 5:22 pmPDX-HLN

9h 12m1 stop

$293Alaska Airlines

Find Deal

Thu, Jan 15 - Sun, Jan 18

6:28 pm - 5:04 pmHLN-PDX

23h 36m2 stops

10:40 am - 5:51 pmPDX-HLN

6h 11m1 stop

$311Alaska Airlines

Find Deal

Mon, Dec 8 - Sun, Dec 14

1:06 pm - 6:14 pmHLN-PDX

6h 08m1 stop

5:30 am - 12:25 pmPDX-HLN

5h 55m1 stop

$368Delta

Find Deal

Thu, Dec 11 - Tue, Dec 16

12:50 pm - 6:11 pmHLN-PDX

6h 21m1 stop

6:00 am - 12:23 pmPDX-HLN

5h 23m1 stop

$397Delta

Find Deal

Wed, Apr 29 - Sun, May 3

4:10 pm - 8:43 pmHLN-PDX

5h 33m1 stop

9:40 am - 3:38 pmPDX-HLN

4h 58m1 stop

$403Alaska Airlines

Find Deal

Wed, Apr 29 - Sun, May 3

2:22 pm - 10:53 amHLN-PDX

21h 31m2 stops

3:54 pm - 9:22 pmPDX-HLN

28h 28m2 stops

$800United Airlines

Find Deal

Thu, Nov 20 - Mon, Nov 24

Delta flights from Helena to Portland

Our best Delta deals on Helena to Portland flight tickets

Delta

Dec 11

HLN5:30 amHelena

4h 40m

1 stop

PDX9:10 amPortland

Dec 16

PDX5:30 amPortland

5h 55m

1 stop

HLN12:25 pmHelena

$255

Find similar

Delta

Dec 11

HLN5:30 amHelena

4h 40m

1 stop

PDX9:10 amPortland

Dec 12

PDX5:30 amPortland

5h 55m

1 stop

HLN12:25 pmHelena

$277

Find similar

Delta

Dec 11

HLN1:06 pmHelena

6h 08m

1 stop

PDX6:14 pmPortland

Dec 16

PDX5:30 amPortland

5h 55m

1 stop

HLN12:25 pmHelena

$368

Find similar

Alaska Airlines flights from Helena to Portland

Our best Alaska Airlines deals on Helena to Portland flight tickets

Alaska Airlines

Jan 15

HLN5:59 pmHelena

5h 47m

1 stop

PDX10:46 pmPortland

Jan 18

PDX9:30 pmPortland

18h 52m

1 stop

HLN5:22 pmHelena

$245

Find similar

Alaska Airlines

Dec 8

HLN6:28 pmHelena

20h 22m

1 stop

PDX1:50 pmPortland

Dec 14

PDX10:40 amPortland

6h 11m

1 stop

HLN5:51 pmHelena

$253

Find similar

Alaska Airlines

Jan 15

HLN5:59 pmHelena

37h 21m

2 stops

PDX6:20 amPortland

Jan 18

PDX7:10 amPortland

9h 12m

1 stop

HLN5:22 pmHelena

$293

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 1/15

5:59 pm-10:46 pm

1 stop5h 47m

Portland

Sun 1/18

9:30 pm-5:22 pm

1 stop18h 52m

$245

HelenaPortland

HLN - PDX

HLNPDX

Helena

Mon 12/8

6:28 pm-1:50 pm

1 stop20h 22m

Portland

Sun 12/14

10:40 am-5:51 pm

1 stop6h 11m

$253

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 12/11

5:30 am-9:10 am

1 stop4h 40m

Portland

Tue 12/16

5:30 am-12:25 pm

1 stop5h 55m

$255

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 12/11

5:30 am-9:10 am

1 stop4h 40m

Portland

Fri 12/12

5:30 am-12:25 pm

1 stop5h 55m

$277

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 1/15

5:59 pm-6:20 am

2 stops37h 21m

Portland

Sun 1/18

7:10 am-5:22 pm

1 stop9h 12m

$293

HelenaPortland

HLN - PDX

HLNPDX

Helena

Mon 12/8

6:28 pm-5:04 pm

2 stops23h 36m

Portland

Sun 12/14

10:40 am-5:51 pm

1 stop6h 11m

$311

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 12/11

1:06 pm-6:14 pm

1 stop6h 08m

Portland

Tue 12/16

5:30 am-12:25 pm

1 stop5h 55m

$368

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 4/29

12:50 pm-6:11 pm

1 stop6h 21m

Portland

Sun 5/3

6:00 am-12:23 pm

1 stop5h 23m

$397

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 4/29

4:10 pm-8:43 pm

1 stop5h 33m

Portland

Sun 5/3

9:40 am-3:38 pm

1 stop4h 58m

$403

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 11/20

2:22 pm-10:53 am

2 stops21h 31m

Portland

Mon 11/24

3:54 pm-9:22 pm

2 stops28h 28m

$800

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Helena to Portland

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 Helena and Portland?

What is the cheapest month to fly to Portland?

The cheapest month to fly to Portland from Helena is in July. Flight prices, which tend to average around $238, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in July, then you should wait until January to fly from Helena, when ticket prices are also cheap, with an average price of $244.

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

The cheapest day to depart on your flight to Portland is on a Tuesday when prices can be found for as low as $308. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around $732.

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

The cheapest time of day to fly to Portland is at noon when flights can be purchased for as low as $347. In the morning is when there is more demand to fly to Portland, so prices are often more expensive at around $393 per ticket.

When to book flights from Helena to Portland

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to Portland according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Helena to Portland (HLN to PDX) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to Portland

Direct flights	None

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

Search flight deals

How far is Helena to Portland by plane?
Portland is 514.7 mi away from Helena. By plane, this route typically takes 4h 40m.
When did momondo last update prices for flights from Helena Airport to Portland Airport?
Prices for flights from Helena Airport to Portland Airport were last updated today.
How many operators does momondo search for flights from Helena Airport to Portland Airport?
The number of operators available for flights from Helena Airport to Portland Airport is 2 as of November 2025.
How old do you have to be to fly from Helena Airport to Portland 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 Helena Airport to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The required travel and health documents for your Portland 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 Portland 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 Helena to Portland?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Helena to Portland is Delta (60% of total bookings). The next most popular airline is Alaska Airlines (40%).

Best airlines flying from Helena to Portland

Compare and see reviews for airlines that fly from Helena to Portland with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $177	Free Cancellation	Rating 8.0 11,246 reviews		Search Alaska Airlines flights
Delta	PriceFrom $178	Free Cancellation	Rating 7.9 8,001 reviews		Search Delta flights

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Why use momondo?

Why should I use momondo to find a flight deal from Helena to Portland?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Helena to Portland. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Helena to Portland with flexible booking policies on momondo?

All flight searches from Helena to Portland on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Helena to Portland?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Portland from Helena.

I’m not ready to book a flight from Helena to Portland right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Portland from Helena. 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.