What is the cheapest airline that flies from Helena to Portland?

Delta is the most popular carrier operating from Helena to Portland

What airlines fly to Portland?

Alaska Airlines, Hawaiian Airlines and Delta 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 January 2026.

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.

$133 Cheap Flights from Helena to Portland in 2026

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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.

6:48 pm - 10:46 pm

HLN

PDX

4h 58m1 stop

1:38 pm - 6:11 pm

PDX

HLN

3h 33m1 stop

$223Alaska Airlines

Wed, Jan 28 - Sat, Jan 31

6:48 pm - 10:46 pm

HLN

PDX

4h 58m1 stop

10:55 am - 6:11 pm

PDX

HLN

6h 16m2 stops

$262Alaska Airlines

Wed, Jan 28 - Sat, Jan 31

6:48 pm - 12:38 pm

HLN

PDX

18h 50m1 stop

8:30 am - 3:59 pm

PDX

HLN

6h 29m1 stop

$263Alaska Airlines

Thu, Feb 5 - Thu, Feb 12

4:43 pm - 9:24 pm

HLN

PDX

5h 41m1 stop

9:39 am - 4:06 pm

PDX

HLN

5h 27m1 stop

$285Alaska Airlines

Thu, May 14 - Fri, May 15

6:48 pm - 1:44 pm

HLN

PDX

43h 56m2 stops

6:00 am - 3:59 pm

PDX

HLN

8h 59m1 stop

$292Alaska Airlines

Thu, Feb 5 - Thu, Feb 12

4:43 pm - 9:24 pm

HLN

PDX

5h 41m1 stop

9:39 am - 4:06 pm

PDX

HLN

5h 27m1 stop

$330Alaska Airlines

Thu, May 14 - Sun, May 17

6:48 pm - 6:20 am

HLN

PDX

36h 32m2 stops

9:55 pm - 3:59 pm

PDX

HLN

17h 04m2 stops

$332Alaska Airlines

Thu, Feb 5 - Thu, Feb 12

4:43 pm - 6:06 am

HLN

PDX

14h 23m2 stops

10:39 am - 4:06 pm

PDX

HLN

4h 27m1 stop

$353Alaska Airlines

Thu, May 14 - Fri, May 15

6:48 pm - 6:07 am

HLN

PDX

12h 19m2 stops

10:55 am - 6:11 pm

PDX

HLN

6h 16m2 stops

$356Alaska Airlines

Wed, Jan 28 - Sat, Jan 31

6:48 pm - 9:45 am

HLN

PDX

15h 57m2 stops

9:10 am - 6:11 pm

PDX

HLN

8h 01m1 stop

$390Alaska Airlines

Mon, Jan 26 - Thu, Jan 29

Delta flights from Helena to Portland

Our best Delta deals on Helena to Portland flight tickets

Delta

Jan 21

HLN5:30 amHelena

4h 39m

1 stop

PDX9:09 amPortland

Jan 25

PDX5:50 amPortland

5h 37m

1 stop

HLN12:27 pmHelena

$537

Delta

Jan 12

HLN5:30 amHelena

4h 33m

1 stop

PDX9:03 amPortland

Jan 12

PDX5:00 pmPortland

4h 29m

1 stop

HLN10:29 pmHelena

$955

Alaska Airlines flights from Helena to Portland

Our best Alaska Airlines deals on Helena to Portland flight tickets

Alaska Airlines

Jan 28

HLN6:48 pmHelena

4h 58m

1 stop

PDX10:46 pmPortland

Jan 31

PDX1:38 pmPortland

3h 33m

1 stop

HLN6:11 pmHelena

$223

Alaska Airlines

Jan 28

HLN6:48 pmHelena

4h 58m

1 stop

PDX10:46 pmPortland

Jan 31

PDX10:55 amPortland

6h 16m

2 stops

HLN6:11 pmHelena

$262

Alaska Airlines

Feb 5

HLN6:48 pmHelena

18h 50m

1 stop

PDX12:38 pmPortland

Feb 12

PDX8:30 amPortland

6h 29m

1 stop

HLN3:59 pmHelena

$263

Fly from

Fly to

Route

Depart

Return

Price

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 1/28

6:48 pm-10:46 pm

1 stop4h 58m

Portland

Sat 1/31

1:38 pm-6:11 pm

1 stop3h 33m

$223

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 1/28

6:48 pm-10:46 pm

1 stop4h 58m

Portland

Sat 1/31

10:55 am-6:11 pm

2 stops6h 16m

$262

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 2/5

6:48 pm-12:38 pm

1 stop18h 50m

Portland

Thu 2/12

8:30 am-3:59 pm

1 stop6h 29m

$263

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 5/14

4:43 pm-9:24 pm

1 stop5h 41m

Portland

Fri 5/15

9:39 am-4:06 pm

1 stop5h 27m

$285

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 2/5

6:48 pm-1:44 pm

2 stops43h 56m

Portland

Thu 2/12

6:00 am-3:59 pm

1 stop8h 59m

$292

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 5/14

4:43 pm-9:24 pm

1 stop5h 41m

Portland

Sun 5/17

9:39 am-4:06 pm

1 stop5h 27m

$330

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 2/5

6:48 pm-6:20 am

2 stops36h 32m

Portland

Thu 2/12

9:55 pm-3:59 pm

2 stops17h 04m

$332

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 5/14

4:43 pm-6:06 am

2 stops14h 23m

Portland

Fri 5/15

10:39 am-4:06 pm

1 stop4h 27m

$353

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 1/28

6:48 pm-6:07 am

2 stops12h 19m

Portland

Sat 1/31

10:55 am-6:11 pm

2 stops6h 16m

$356

HelenaPortland

HLN - PDX

HLNPDX

Helena

Mon 1/26

6:48 pm-9:45 am

2 stops15h 57m

Portland

Thu 1/29

9:10 am-6:11 pm

1 stop8h 01m

$390

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 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 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 December to fly from Helena, when ticket prices are also cheap, with an average price of $251.

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

Fastest flight time	4h 18m
Direct flights	None

The fastest flight from Helena to Portland takes 4h 18m

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 18m.
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 January 2026.
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 (63% of total bookings). The next most popular airline is Alaska Airlines (37%).

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 $147	Free Cancellation	Rating 8.0 11,663 reviews		Search Alaska Airlines flights
Delta	PriceFrom $178	Free Cancellation	Rating 7.9 8,027 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.