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Cheap flights from Helena to Portland from $198

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to Portland departing on 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Helena to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
4:41 pm - 9:55 pm
HLN
-
PDX
6h 14m
1 stop
Alaska Airlines Logo
7:35 pm - 4:04 pm
PDX
-
HLN
19h 29m
1 stop
$363Alaska Airlines
Sat, Nov 7 - Tue, Nov 10
Alaska Airlines Logo
5:18 pm - 4:50 pm
HLN
-
PDX
24h 32m
1 stop
Alaska Airlines Logo
9:32 pm - 4:41 pm
PDX
-
HLN
18h 09m
1 stop
$373Alaska Airlines
Tue, Sep 15 - Fri, Sep 18
Alaska Airlines Logo
4:41 pm - 9:55 pm
HLN
-
PDX
6h 14m
1 stop
Alaska Airlines Logo
10:45 am - 4:04 pm
PDX
-
HLN
4h 19m
1 stop
$395Alaska Airlines
Sat, Nov 7 - Tue, Nov 10
Alaska Airlines Logo
4:41 pm - 11:00 pm
HLN
-
PDX
7h 19m
1 stop
Alaska Airlines Logo
11:52 am - 4:04 pm
PDX
-
HLN
27h 12m
2 stops
$401Alaska Airlines
Sat, Nov 7 - Tue, Nov 10
Alaska Airlines Logo
5:11 pm - 1:10 pm
HLN
-
PDX
20h 59m
1 stop
Alaska Airlines Logo
9:30 am - 4:55 pm
PDX
-
HLN
6h 25m
1 stop
$409Alaska Airlines
Wed, Aug 19 - Sat, Aug 22
Alaska Airlines Logo
5:11 pm - 9:45 am
HLN
-
PDX
17h 34m
2 stops
Alaska Airlines Logo
10:45 am - 4:55 pm
PDX
-
HLN
5h 10m
1 stop
$412Alaska Airlines
Wed, Aug 19 - Sat, Aug 22
Alaska Airlines Logo
4:41 pm - 9:55 pm
HLN
-
PDX
6h 14m
1 stop
Alaska Airlines Logo
9:32 pm - 4:04 pm
PDX
-
HLN
17h 32m
2 stops
$417Alaska Airlines
Sat, Nov 7 - Tue, Nov 10
Alaska Airlines Logo
5:18 pm - 4:50 pm
HLN
-
PDX
24h 32m
2 stops
Alaska Airlines Logo
5:41 pm - 4:41 pm
PDX
-
HLN
22h 00m
1 stop
$430Alaska Airlines
Tue, Sep 15 - Fri, Sep 18
Alaska Airlines Logo
5:11 pm - 9:45 am
HLN
-
PDX
17h 34m
2 stops
Alaska Airlines Logo
7:00 am - 4:55 pm
PDX
-
HLN
8h 55m
2 stops
$469Alaska Airlines
Wed, Aug 19 - Sat, Aug 22
Delta Logo
5:40 am - 8:37 am
HLN
-
PDX
3h 57m
1 stop
Delta Logo
5:45 am - 12:15 pm
PDX
-
HLN
5h 30m
1 stop
$470Delta
Thu, Jul 30 - Sun, Aug 2

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Alaska Airlines flights from Helena to Portland

Our best Alaska Airlines deals on Helena to Portland flight tickets
Alaska Airlines
Nov 7
HLN4:41 pmHelena
6h 14m
1 stop
PDX9:55 pmPortland
Nov 10
PDX7:35 pmPortland
19h 29m
1 stop
HLN4:04 pmHelena
$363
Alaska Airlines
Sep 15
HLN5:18 pmHelena
24h 32m
1 stop
PDX4:50 pmPortland
Sep 18
PDX9:32 pmPortland
18h 09m
1 stop
HLN4:41 pmHelena
$373
Alaska Airlines
Nov 7
HLN4:41 pmHelena
6h 14m
1 stop
PDX9:55 pmPortland
Nov 10
PDX10:45 amPortland
4h 19m
1 stop
HLN4:04 pmHelena
$395

Delta flights from Helena to Portland

Our best Delta deals on Helena to Portland flight tickets
Delta
Jul 30
HLN5:40 amHelena
3h 57m
1 stop
PDX8:37 amPortland
Aug 2
PDX5:45 amPortland
5h 30m
1 stop
HLN12:15 pmHelena
$470
Delta
Jul 26
HLN12:55 pmHelena
4h 14m
1 stop
PDX4:09 pmPortland
Aug 3
PDX5:45 amPortland
5h 30m
1 stop
HLN12:15 pmHelena
$495
Delta
Jul 30
HLN12:55 pmHelena
6h 23m
1 stop
PDX6:18 pmPortland
Aug 2
PDX5:45 amPortland
5h 30m
1 stop
HLN12:15 pmHelena
$510

momondo Fare Finder

 
Customize your flight search to find flights from Helena to Portland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated July 2, 2026.
Use the filters below to find and compare flights from Helena to Portland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sat 11/7

4:41 pm-9:55 pm

1 stop6h 14m

Portland

Tue 11/10

7:35 pm-4:04 pm

1 stop19h 29m

$363

HelenaPortland

HLN - PDX

HLNPDX

Helena

Tue 9/15

5:18 pm-4:50 pm

1 stop24h 32m

Portland

Fri 9/18

9:32 pm-4:41 pm

1 stop18h 09m

$373

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sat 11/7

4:41 pm-9:55 pm

1 stop6h 14m

Portland

Tue 11/10

10:45 am-4:04 pm

1 stop4h 19m

$395

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sat 11/7

4:41 pm-11:00 pm

1 stop7h 19m

Portland

Tue 11/10

11:52 am-4:04 pm

2 stops27h 12m

$401

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 8/19

5:11 pm-1:10 pm

1 stop20h 59m

Portland

Sat 8/22

9:30 am-4:55 pm

1 stop6h 25m

$409

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 8/19

5:11 pm-9:45 am

2 stops17h 34m

Portland

Sat 8/22

10:45 am-4:55 pm

1 stop5h 10m

$412

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sat 11/7

4:41 pm-9:55 pm

1 stop6h 14m

Portland

Tue 11/10

9:32 pm-4:04 pm

2 stops17h 32m

$417

HelenaPortland

HLN - PDX

HLNPDX

Helena

Tue 9/15

5:18 pm-4:50 pm

2 stops24h 32m

Portland

Fri 9/18

5:41 pm-4:41 pm

1 stop22h 00m

$430

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 8/19

5:11 pm-9:45 am

2 stops17h 34m

Portland

Sat 8/22

7:00 am-4:55 pm

2 stops8h 55m

$469
Quickest round-trip

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 7/30

5:40 am-8:37 am

1 stop3h 57m

Portland

Sun 8/2

5:45 am-12:15 pm

1 stop5h 30m

$470

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Portland from

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

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, 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 76% 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 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

3h 57m

Direct flights

None
The fastest flight from Helena to Portland takes 3h 57m
There are no direct flights from Helena to Portland. There are no popular flight routes from Helena to Portland.
Search flight deals

Frequently asked questions about flying from Helena to Portland

  • How far is Helena to Portland by plane?

    Portland is 514.7 mi away from Helena. By plane, this route typically takes 3h 57m.

  • 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?

  • 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?

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
DeltaPriceFrom $183Free CancellationRating
7.8
8,452 reviews
Search Delta flights

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Lincoln City
Seaside
Cannon Beach
Vancouver
Salem
Astoria
Long Beach
Beaverton
Rockaway Beach
Hillsboro
Depoe Bay
Tigard
Hood River
Longview
Newberg
Clackamas
Troutdale
Gresham
McMinnville
The Dalles

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.

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