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Cheap flights from Helena to Portland from $165

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 6/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Delta Logo
5:45 am - 8:52 am
HLN
-
PDX
4h 07m
1 stop
Delta Logo
5:45 am - 12:20 pm
PDX
-
HLN
5h 35m
1 stop
$392Delta
Sat, Jun 6 - Sat, Jun 13
Alaska Airlines Logo
4:48 pm - 9:59 pm
HLN
-
PDX
6h 11m
1 stop
Alaska Airlines Logo
9:28 am - 4:11 pm
PDX
-
HLN
5h 43m
1 stop
$435Alaska Airlines
Wed, Oct 28 - Sat, Oct 31
Alaska Airlines Logo
4:48 pm - 7:54 pm
HLN
-
PDX
4h 06m
1 stop
Alaska Airlines Logo
10:45 am - 4:04 pm
PDX
-
HLN
4h 19m
1 stop
$445Alaska Airlines
Thu, Oct 29 - Tue, Nov 3
Alaska Airlines Logo
5:09 pm - 10:25 pm
HLN
-
PDX
6h 16m
1 stop
Alaska Airlines Logo
7:19 am - 4:32 pm
PDX
-
HLN
8h 13m
1 stop
$455Alaska Airlines
Thu, Aug 6 - Mon, Aug 10
Alaska Airlines Logo
4:43 pm - 8:21 pm
HLN
-
PDX
4h 38m
1 stop
Alaska Airlines Logo
8:44 am - 4:06 pm
PDX
-
HLN
6h 22m
1 stop
$458Alaska Airlines
Wed, May 27 - Sat, May 30
Alaska Airlines Logo
4:48 pm - 4:50 pm
HLN
-
PDX
25h 02m
2 stops
Alaska Airlines Logo
10:51 am - 4:11 pm
PDX
-
HLN
4h 20m
1 stop
$470Alaska Airlines
Wed, Oct 28 - Sat, Oct 31
Alaska Airlines Logo
4:43 pm - 7:46 pm
HLN
-
PDX
28h 03m
2 stops
Alaska Airlines Logo
8:44 am - 4:06 pm
PDX
-
HLN
6h 22m
1 stop
$477Alaska Airlines
Wed, May 27 - Sat, May 30
Alaska Airlines Logo
5:09 pm - 10:25 pm
HLN
-
PDX
6h 16m
1 stop
Alaska Airlines Logo
9:30 pm - 4:32 pm
PDX
-
HLN
18h 02m
2 stops
$495Alaska Airlines
Thu, Aug 6 - Mon, Aug 10
Alaska Airlines Logo
4:48 pm - 9:41 am
HLN
-
PDX
17h 53m
2 stops
Alaska Airlines Logo
5:00 pm - 5:04 pm
PDX
-
HLN
23h 04m
2 stops
$511Alaska Airlines
Wed, Oct 28 - Sat, Oct 31
Alaska Airlines Logo
5:09 pm - 10:25 pm
HLN
-
PDX
6h 16m
1 stop
Alaska Airlines Logo
7:52 am - 4:32 pm
PDX
-
HLN
7h 40m
2 stops
$530Alaska Airlines
Sat, Aug 8 - Sat, Aug 15

Alaska Airlines flights from Helena to Portland

Our best Alaska Airlines deals on Helena to Portland flight tickets
Alaska Airlines
Oct 28
HLN4:48 pmHelena
6h 11m
1 stop
PDX9:59 pmPortland
Oct 31
PDX9:28 amPortland
5h 43m
1 stop
HLN4:11 pmHelena
$435
Alaska Airlines
Oct 29
HLN4:48 pmHelena
4h 06m
1 stop
PDX7:54 pmPortland
Nov 3
PDX10:45 amPortland
4h 19m
1 stop
HLN4:04 pmHelena
$445
Alaska Airlines
Aug 6
HLN5:09 pmHelena
6h 16m
1 stop
PDX10:25 pmPortland
Aug 10
PDX7:19 amPortland
8h 13m
1 stop
HLN4:32 pmHelena
$455

United Airlines flights from Helena to Portland

Our best United Airlines deals on Helena to Portland flight tickets
United Airlines
May 23
HLN6:15 amHelena
17h 48m
2 stops
PDX11:03 pmPortland
May 26
PDX5:15 amPortland
31h 18m
3 stops
HLN1:33 pmHelena
$945
United Airlines
May 22
HLN6:15 amHelena
17h 45m
1 stop
PDX11:00 pmPortland
May 25
PDX5:15 amPortland
31h 18m
3 stops
HLN1:33 pmHelena
$967
United Airlines
May 22
HLN2:20 pmHelena
28h 26m
1 stop
PDX5:46 pmPortland
May 25
PDX5:15 amPortland
31h 18m
3 stops
HLN1:33 pmHelena
$996

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 May 13, 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 6/6

5:45 am-8:52 am

1 stop4h 07m

Portland

Sat 6/13

5:45 am-12:20 pm

1 stop5h 35m

$392

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 10/28

4:48 pm-9:59 pm

1 stop6h 11m

Portland

Sat 10/31

9:28 am-4:11 pm

1 stop5h 43m

$435
Quickest round-trip

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 10/29

4:48 pm-7:54 pm

1 stop4h 06m

Portland

Tue 11/3

10:45 am-4:04 pm

1 stop4h 19m

$445

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 8/6

5:09 pm-10:25 pm

1 stop6h 16m

Portland

Mon 8/10

7:19 am-4:32 pm

1 stop8h 13m

$455

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 5/27

4:43 pm-8:21 pm

1 stop4h 38m

Portland

Sat 5/30

8:44 am-4:06 pm

1 stop6h 22m

$458

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 10/28

4:48 pm-4:50 pm

2 stops25h 02m

Portland

Sat 10/31

10:51 am-4:11 pm

1 stop4h 20m

$470

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 5/27

4:43 pm-7:46 pm

2 stops28h 03m

Portland

Sat 5/30

8:44 am-4:06 pm

1 stop6h 22m

$477

HelenaPortland

HLN - PDX

HLNPDX

Helena

Thu 8/6

5:09 pm-10:25 pm

1 stop6h 16m

Portland

Mon 8/10

9:30 pm-4:32 pm

2 stops18h 02m

$495

HelenaPortland

HLN - PDX

HLNPDX

Helena

Wed 10/28

4:48 pm-9:41 am

2 stops17h 53m

Portland

Sat 10/31

5:00 pm-5:04 pm

2 stops23h 04m

$511

HelenaPortland

HLN - PDX

HLNPDX

Helena

Sat 8/8

5:09 pm-10:25 pm

1 stop6h 16m

Portland

Sat 8/15

7:52 am-4:32 pm

2 stops7h 40m

$530

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 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 April. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in April, then you should wait until July to fly from Helena, when ticket prices are also cheap, with an average price of $238.

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 06m

Direct flights

None
The fastest flight from Helena to Portland takes 4h 06m
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 4h 06m.

  • 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 $142Free CancellationRating
7.9
8,450 reviews
Search Delta flights
Alaska AirlinesPriceFrom $147Free CancellationRating
7.9
12,360 reviews
Search Alaska Airlines 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
Beaverton
Depoe Bay
Hillsboro
Tigard
Longview
Hood River
Troutdale
Newberg
The Dalles
Gresham
McMinnville
Manzanita

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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