PDX - HLN

$124 Find Cheap Flights from Portland to Helena

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Helena departing on 5/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Helena

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Helena, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Helena, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$245
Overall average: $424
Alaska Airlines
Sat 4/11Tue 4/14
PDX - HLN • 1 stop
Cheapest one-way
$124
Alaska Airlines
Tue 5/19
PDX - HLN • 1 stop
Top airlines
Cheapest • from $245 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Portland and Helena. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $449 (round-trip)
Shortest trip • 4h 58m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 36% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Helena!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Helena (PDX-HLN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Helena that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Helena

Sat, Apr 11 - Tue, Apr 14
Alaska Airlines Logo
9:00 am - 5:45 pm
PDX
-
HLN
7h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 8:10 am
HLN
-
PDX
14h 48m
1 stop
$245Alaska Airlines
Sat, Apr 11 - Tue, Apr 14
Alaska Airlines Logo
9:00 am - 5:45 pm
PDX
-
HLN
7h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 10:36 am
HLN
-
PDX
17h 14m
1 stop
$283Alaska Airlines
Sat, Apr 11 - Tue, Apr 14
Alaska Airlines Logo
9:00 am - 5:45 pm
PDX
-
HLN
7h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 10:36 am
HLN
-
PDX
17h 14m
1 stop
$294Alaska Airlines
Fri, May 1 - Mon, May 4
Alaska Airlines Logo
8:45 am - 5:45 pm
PDX
-
HLN
8h 00m
1 stop
Alaska Airlines Logo
6:22 pm - 6:14 am
HLN
-
PDX
12h 52m
2 stops
$303Alaska Airlines
Sat, Apr 11 - Tue, Apr 14
Alaska Airlines Logo
9:00 am - 5:45 pm
PDX
-
HLN
7h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 9:28 am
HLN
-
PDX
16h 06m
2 stops
$323Alaska Airlines
Sat, Apr 11 - Tue, Apr 14
Alaska Airlines Logo
9:00 am - 5:45 pm
PDX
-
HLN
7h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 1:37 pm
HLN
-
PDX
20h 15m
2 stops
$341Alaska Airlines
Fri, May 1 - Sun, May 3
Alaska Airlines Logo
8:45 am - 5:45 pm
PDX
-
HLN
8h 00m
1 stop
Alaska Airlines Logo
6:22 pm - 10:53 pm
HLN
-
PDX
5h 31m
1 stop
$342Alaska Airlines
Sat, Apr 11 - Tue, Apr 14
Alaska Airlines Logo
6:00 am - 5:45 pm
PDX
-
HLN
10h 45m
1 stop
Alaska Airlines Logo
6:22 pm - 9:35 am
HLN
-
PDX
16h 13m
2 stops
$361Alaska Airlines
Sun, Apr 12 - Sun, Apr 19
Alaska Airlines Logo
2:34 pm - 5:45 pm
PDX
-
HLN
26h 11m
2 stops
Alaska Airlines Logo
6:22 pm - 9:38 pm
HLN
-
PDX
4h 16m
1 stop
$367Alaska Airlines
Fri, Apr 24 - Sun, Apr 26
Alaska Airlines Logo
11:59 am - 5:45 pm
PDX
-
HLN
4h 46m
1 stop
Alaska Airlines Logo
6:22 pm - 7:34 pm
HLN
-
PDX
26h 12m
1 stop
$398Alaska Airlines
Booking Insights

KAYAK's insights & trends for Portland to Helena flights

Get data-powered insights and trends into flights from Portland to Helena to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Portland to Helena?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Helena, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Helena is October, where tickets cost $326 (return) on average. On the other hand, the most expensive months are January and November, where the average cost of round-trip tickets is $810 and $650 respectively.

Good to know

Low seasonJanuary
Cheapest flight$124
Best time to beat the crowds but there is an average 59% increase in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Portland to Helena

When to book flights from Portland to Helena

Are your dates flexible? Find out the best times to travel from Portland to Helena based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Helena

  • What is the cheapest flight from Portland to Helena?

    In the last 3 days, the lowest price for a flight from Portland to Helena was $124 for a one-way ticket and $245 for a round-trip.

  • Do I need a passport to fly between Portland and Helena?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Portland to Helena?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Helena?

    SkyTeam, and oneworld are the airline alliances operating flights between Portland and Helena, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Helena, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Portland to Helena are Alaska Airlines and Delta. With an average price for the route of $455 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $434 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Portland to Helena?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Helena.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Helena?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Helena from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Helena?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Helena with an airline and back to Portland with another airline. Booking your flights between Portland and HLN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Helena?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Helena from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Portland to Helena

 
See real verified KAYAK customer reviews for airlines flying from Portland to Helena. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Helena? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12052 reviews
8.5Crew
7.8Comfort
8.1Boarding
7.0Entertainment
7.1Food
Airline reviews

Never got on because first part of trip was cancelled and we have no idea when we will get rebooked…

2.0 MediocreAnonymous, Mar 2026
PDX - SEA
Read more Alaska Airlines reviews

Never got on because first part of trip was cancelled and we have no idea when we will get rebooked…

Wonderful as always! Pleasant staff, smooth ride, and timely departure.

Everything ran like it should. Staff was professional. Looking forward to flying with them again.

Liked the attention and speed when getting wheelchair..........Was assured by phone that my needs would be taken care of and they were with my name.

The seats were spacious and comfortable. Even in basic economy. However, the flight boarded 30 minutes late.

Alaska used to be a top notch airline. With it's growth it is now in line with the big airlines. Not bad, not great.

Great. I did have a little issue getting into the Lounge, which is likely more an American Airlines issue. I did not carry my physical AAdvantage Executive credit card with me on this trip, which Admirals Club membership is a part of the benefits of having this card. The instructions on the AA website and the Citi cards website make it seem like you don't need the physical card, as both sites state you can enter with your boarding pass and driver's license. But both lounges said you were required to present the physical card (and not the digital version, via Apple Pay), as only the physical card says "Admirals Club" on the back.I also do not have a physical Admirals Club membership card, so while both lounges eventually let me in, both denied me entrance initially for this reason.

Everything from the time I booked my flight through to the end when I got home was smooth and wonderful. Service was great, the flight attendants were attentive and there were no outstanding delays.

Delayed and no entertainment? I also forgot my headphones and immediately reported it and have not heard back yet.

The crew was very friendly. Boarding was quick and efficient.

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Everything you need to know for your flight from Portland to Helena

Information on your arrival and departure airports