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Cheap flights from Helena to Portland from $222

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 9/18. 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
0 bags

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Find the cheapest flights from Helena to Portland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:22 pm - 7:34 pm
HLN
-
PDX
26h 12m
1 stop
Alaska Airlines Logo
8:45 am - 5:45 pm
PDX
-
HLN
8h 00m
1 stop
$363Alaska Airlines
Th. 3, Thg. 5 5 - Th. 7, Thg. 5 9
Alaska Airlines Logo
6:22 pm - 9:31 am
HLN
-
PDX
16h 09m
1 stop
Alaska Airlines Logo
8:30 pm - 5:45 pm
PDX
-
HLN
20h 15m
1 stop
$383Alaska Airlines
Th. 7, Thg. 4 25 - Th. 3, Thg. 4 28
Alaska Airlines Logo
6:22 pm - 10:53 pm
HLN
-
PDX
5h 31m
1 stop
Alaska Airlines Logo
11:59 am - 5:45 pm
PDX
-
HLN
4h 46m
1 stop
$390Alaska Airlines
Th. 7, Thg. 4 25 - Th. 3, Thg. 4 28
Alaska Airlines Logo
6:22 pm - 7:34 pm
HLN
-
PDX
26h 12m
1 stop
Alaska Airlines Logo
2:45 pm - 5:45 pm
PDX
-
HLN
26h 00m
1 stop
$393Alaska Airlines
Th. 7, Thg. 4 25 - Th. 3, Thg. 4 28
Alaska Airlines Logo
6:22 pm - 7:34 pm
HLN
-
PDX
26h 12m
1 stop
Alaska Airlines Logo
2:27 pm - 5:45 pm
PDX
-
HLN
26h 18m
2 stops
$399Alaska Airlines
Th. 3, Thg. 5 5 - Th. 7, Thg. 5 9
Alaska Airlines Logo
6:22 pm - 4:43 pm
HLN
-
PDX
23h 21m
2 stops
Alaska Airlines Logo
11:59 am - 5:45 pm
PDX
-
HLN
4h 46m
1 stop
$410Alaska Airlines
Th. 7, Thg. 4 25 - Th. 3, Thg. 4 28
Delta Logo
5:45 am - 9:03 am
HLN
-
PDX
4h 18m
1 stop
Delta Logo
6:00 am - 12:23 pm
PDX
-
HLN
5h 23m
1 stop
$415Delta
Th. 4, Thg. 9 2 - Th. 4, Thg. 9 9
Alaska Airlines Logo
6:22 pm - 10:53 pm
HLN
-
PDX
5h 31m
1 stop
Alaska Airlines Logo
2:50 pm - 5:45 pm
PDX
-
HLN
25h 55m
2 stops
$420Alaska Airlines
Th. 7, Thg. 4 25 - Th. 3, Thg. 4 28
Alaska Airlines Logo
4:43 pm - 8:41 pm
HLN
-
PDX
28h 58m
2 stops
Alaska Airlines Logo
9:44 am - 4:06 pm
PDX
-
HLN
5h 22m
1 stop
$427Alaska Airlines
Th. 6, Thg. 5 29 - Th. 4, Thg. 6 3
Delta Logo
5:45 am - 8:52 am
HLN
-
PDX
4h 07m
1 stop
Delta Logo
5:05 pm - 10:33 pm
PDX
-
HLN
4h 28m
1 stop
$429Delta
Th. 7, Thg. 5 30 - Th. 4, Thg. 6 3

Alaska Airlines flights from Helena to Portland

Our best Alaska Airlines deals on Helena to Portland flight tickets
Alaska Airlines
May 5
HLN6:22 pmHelena
26h 12m
1 stop
PDX7:34 pmPortland
May 9
PDX8:45 amPortland
8h 00m
1 stop
HLN5:45 pmHelena
$363
Alaska Airlines
Apr 25
HLN6:22 pmHelena
16h 09m
1 stop
PDX9:31 amPortland
Apr 28
PDX8:30 pmPortland
20h 15m
1 stop
HLN5:45 pmHelena
$383
Alaska Airlines
Apr 25
HLN6:22 pmHelena
5h 31m
1 stop
PDX10:53 pmPortland
Apr 28
PDX11:59 amPortland
4h 46m
1 stop
HLN5:45 pmHelena
$390

Delta flights from Helena to Portland

Our best Delta deals on Helena to Portland flight tickets
Delta
May 30
HLN5:45 amHelena
4h 07m
1 stop
PDX8:52 amPortland
Jun 3
PDX5:05 pmPortland
4h 28m
1 stop
HLN10:33 pmHelena
$429
Delta
May 30
HLN5:45 amHelena
4h 07m
1 stop
PDX8:52 amPortland
Jun 3
PDX6:50 amPortland
14h 43m
2 stops
HLN10:33 pmHelena
$530
Delta
Jun 5
HLN5:45 amHelena
4h 07m
1 stop
PDX8:52 amPortland
Jun 5
PDX5:05 pmPortland
4h 28m
1 stop
HLN10:33 pmHelena
$759

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 Tháng Ba 26, 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

Th. 3 5/5

6:22 pm-7:34 pm

1 stop26h 12m

Portland

Th. 7 5/9

8:45 am-5:45 pm

1 stop8h 00m

$363

HelenaPortland

HLN - PDX

HLNPDX

Helena

Th. 7 4/25

6:22 pm-9:31 am

1 stop16h 09m

Portland

Th. 3 4/28

8:30 pm-5:45 pm

1 stop20h 15m

$383

HelenaPortland

HLN - PDX

HLNPDX

Helena

Th. 7 4/25

6:22 pm-10:53 pm

1 stop5h 31m

Portland

Th. 3 4/28

11:59 am-5:45 pm

1 stop4h 46m

$390

HelenaPortland

HLN - PDX

HLNPDX

Helena

Th. 7 4/25

6:22 pm-7:34 pm

1 stop26h 12m

Portland

Th. 3 4/28

2:45 pm-5:45 pm

1 stop26h 00m

$393

HelenaPortland

HLN - PDX

HLNPDX

Helena

Th. 3 5/5

6:22 pm-7:34 pm

1 stop26h 12m

Portland

Th. 7 5/9

2:27 pm-5:45 pm

2 stops26h 18m

$399

HelenaPortland

HLN - PDX

HLNPDX

Helena

Th. 7 4/25

6:22 pm-4:43 pm

2 stops23h 21m

Portland

Th. 3 4/28

11:59 am-5:45 pm

1 stop4h 46m

$410

HelenaPortland

HLN - PDX

HLNPDX

Helena

Th. 4 9/2

5:45 am-9:03 am

1 stop4h 18m

Portland

Th. 4 9/9

6:00 am-12:23 pm

1 stop5h 23m

$415

HelenaPortland

HLN - PDX

HLNPDX

Helena

Th. 7 4/25

6:22 pm-10:53 pm

1 stop5h 31m

Portland

Th. 3 4/28

2:50 pm-5:45 pm

2 stops25h 55m

$420

HelenaPortland

HLN - PDX

HLNPDX

Helena

Th. 6 5/29

4:43 pm-8:41 pm

2 stops28h 58m

Portland

Th. 4 6/3

9:44 am-4:06 pm

1 stop5h 22m

$427
Quickest round-trip

HelenaPortland

HLN - PDX

HLNPDX

Helena

Th. 7 5/30

5:45 am-8:52 am

1 stop4h 07m

Portland

Th. 4 6/3

5:05 pm-10:33 pm

1 stop4h 28m

$429

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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 and Alaska Airlines are the most popular carriers 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 74% 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

4h 34m

Direct flights

None
The fastest flight from Helena to Portland takes 4h 34m
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 34m.

  • 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
Alaska AirlinesPriceFrom $147Free CancellationRating
7.9
12,116 reviews
Search Alaska Airlines flights
DeltaPriceFrom $178Free CancellationRating
7.9
8,331 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
Rockaway Beach
Depoe Bay
Beaverton
Hillsboro
Tigard
Hood River
Longview
Troutdale
Newberg
McMinnville
The Dalles
Manzanita
Pacific City

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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Th. 7 4/25
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