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.

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

Alaska Airlines, Delta, and United Airlines are the most popular carriers operating from Helena to Portland

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 August 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

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Find the cheapest flights from Helena to Portland

Round-trip

One-way

Cheap round-trip flights

4:02 pm - 12:15 amHLN-PDX

9h 13m1 stop

6:05 am - 3:21 pmPDX-HLN

8h 16m1 stop

$302Alaska Airlines

Find Deal

Sat, Sep 13 - Tue, Sep 16

4:02 pm - 12:27 pmHLN-PDX

21h 25m1 stop

1:24 pm - 3:21 pmPDX-HLN

24h 57m1 stop

$342Alaska Airlines

Find Deal

Mon, Sep 15 - Mon, Sep 22

4:02 pm - 6:18 amHLN-PDX

15h 16m2 stops

6:05 am - 3:21 pmPDX-HLN

8h 16m1 stop

$351Alaska Airlines

Find Deal

Sat, Sep 13 - Tue, Sep 16

4:02 pm - 12:27 pmHLN-PDX

21h 25m1 stop

5:47 pm - 5:41 pmPDX-HLN

22h 54m1 stop

$352Alaska Airlines

Find Deal

Mon, Sep 29 - Fri, Oct 3

5:45 am - 8:55 amHLN-PDX

4h 10m1 stop

5:40 am - 12:20 pmPDX-HLN

5h 40m1 stop

$367Delta

Find Deal

Sun, Oct 5 - Thu, Oct 9

4:02 pm - 12:27 pmHLN-PDX

21h 25m1 stop

9:55 pm - 3:21 pmPDX-HLN

40h 26m2 stops

$371Alaska Airlines

Find Deal

Mon, Sep 15 - Mon, Sep 22

5:50 am - 8:51 amHLN-PDX

4h 01m1 stop

5:05 pm - 10:13 pmPDX-HLN

4h 08m1 stop

$403Delta

Find Deal

Sat, Aug 30 - Sat, Sep 6

4:02 pm - 4:50 pmHLN-PDX

25h 48m2 stops

9:55 pm - 3:21 pmPDX-HLN

40h 26m2 stops

$409Alaska Airlines

Find Deal

Mon, Sep 15 - Mon, Sep 22

6:18 pm - 10:45 pmHLN-PDX

5h 27m1 stop

2:30 pm - 5:41 pmPDX-HLN

26h 11m1 stop

$415Alaska Airlines

Find Deal

Sun, Oct 5 - Thu, Oct 9

6:30 am - 8:37 pmHLN-PDX

15h 07m2 stops

3:46 pm - 9:11 pmPDX-HLN

28h 25m2 stops

$566United Airlines

Find Deal

Sat, Aug 30 - Sat, Sep 6

Alaska Airlines flights from Helena to Portland

Our best Alaska Airlines deals on Helena to Portland flight tickets

Alaska Airlines

Sep 13

HLN4:02 pmHelena

9h 13m

1 stop

PDX12:15 amPortland

Sep 16

PDX6:05 amPortland

8h 16m

1 stop

HLN3:21 pmHelena

$302

Find similar

Alaska Airlines

Sep 15

HLN4:02 pmHelena

21h 25m

1 stop

PDX12:27 pmPortland

Sep 22

PDX1:24 pmPortland

24h 57m

1 stop

HLN3:21 pmHelena

$342

Find similar

Alaska Airlines

Sep 13

HLN4:02 pmHelena

15h 16m

2 stops

PDX6:18 amPortland

Sep 16

PDX6:05 amPortland

8h 16m

1 stop

HLN3:21 pmHelena

$351

Find similar

Delta flights from Helena to Portland

Our best Delta deals on Helena to Portland flight tickets

Delta

Oct 5

HLN5:45 amHelena

4h 10m

1 stop

PDX8:55 amPortland

Oct 9

PDX5:40 amPortland

5h 40m

1 stop

HLN12:20 pmHelena

$367

Find similar

Delta

Aug 30

HLN5:50 amHelena

4h 01m

1 stop

PDX8:51 amPortland

Sep 6

PDX5:05 pmPortland

4h 08m

1 stop

HLN10:13 pmHelena

$403

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sat 9/13

4:02 pm-12:15 am

1 stop9h 13m

Portland

Tue 9/16

6:05 am-3:21 pm

1 stop8h 16m

$302

HelenaPortland

HLN - PDX

HLNPDX

Helena

Mon 9/15

4:02 pm-12:27 pm

1 stop21h 25m

Portland

Mon 9/22

1:24 pm-3:21 pm

1 stop24h 57m

$342

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sat 9/13

4:02 pm-6:18 am

2 stops15h 16m

Portland

Tue 9/16

6:05 am-3:21 pm

1 stop8h 16m

$351

HelenaPortland

HLN - PDX

HLNPDX

Helena

Mon 9/29

4:02 pm-12:27 pm

1 stop21h 25m

Portland

Fri 10/3

5:47 pm-5:41 pm

1 stop22h 54m

$352

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sun 10/5

5:45 am-8:55 am

1 stop4h 10m

Portland

Thu 10/9

5:40 am-12:20 pm

1 stop5h 40m

$367

HelenaPortland

HLN - PDX

HLNPDX

Helena

Mon 9/15

4:02 pm-12:27 pm

1 stop21h 25m

Portland

Mon 9/22

9:55 pm-3:21 pm

2 stops40h 26m

$371

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sat 8/30

5:50 am-8:51 am

1 stop4h 01m

Portland

Sat 9/6

5:05 pm-10:13 pm

1 stop4h 08m

$403

HelenaPortland

HLN - PDX

HLNPDX

Helena

Mon 9/15

4:02 pm-4:50 pm

2 stops25h 48m

Portland

Mon 9/22

9:55 pm-3:21 pm

2 stops40h 26m

$409

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sun 10/5

6:18 pm-10:45 pm

1 stop5h 27m

Portland

Thu 10/9

2:30 pm-5:41 pm

1 stop26h 11m

$415

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sat 8/30

6:30 am-8:37 pm

2 stops15h 07m

Portland

Sat 9/6

3:46 pm-9:11 pm

2 stops28h 25m

$566

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 January to fly from Helena, when ticket prices are also cheap, with an average price of $243.

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

Best Price Found	$181
Fastest flight time	4h 01m
Direct flights	None
Airports in Portland	1 airport

The best one-way flight to Portland from Helena in the past 72 hours is $181. The best round-trip flight deal from Helena to Portland found on momondo in the last 72 hours is $302.

The fastest flight from Helena to Portland takes 4h 01m

There are no direct flights from Helena to Portland. Popular non-direct route for this connection is Helena Airport - Portland Airport.

There is 1 airport near Portland: Portland (PDX)

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How far is Helena to Portland by plane?
Portland is 514.7 mi away from Helena. By plane, this route typically takes 4h 01m.
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 August 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 (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
Delta	PriceFrom $227	Free Cancellation	Rating 8.0 7,981 reviews		Search Delta flights
Alaska Airlines	PriceFrom $231	Free Cancellation	Rating 8.0 10,000 reviews		Search Alaska Airlines 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.