PDX - HLN

$167 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 8/25. 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
$333
Typical prices: $837-$455
Delta
Tue 9/15Tue 9/22
PDX - HLN • 1 stop
Cheapest one-way
$167
Delta
Tue 8/25
PDX - HLN • 1 stop
Top airlines
Cheapest • from $333 (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 $508 (round-trip)
Shortest trip • 4h 42m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 34% 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

Tue, Sep 15 - Tue, Sep 22
Delta Logo
5:50 am - 12:17 pm
PDX
-
HLN
5h 27m
1 stop
Delta Logo
12:57 pm - 4:05 pm
HLN
-
PDX
4h 08m
1 stop
$333Delta
Tue, Sep 15 - Tue, Sep 22
Delta Logo
5:50 am - 12:17 pm
PDX
-
HLN
5h 27m
1 stop
Delta Logo
12:57 pm - 10:02 pm
HLN
-
PDX
10h 05m
2 stops
$338Delta
Thu, Sep 17 - Wed, Sep 23
Alaska Airlines Logo
11:48 am - 4:41 pm
PDX
-
HLN
3h 53m
1 stop
Alaska Airlines Logo
5:18 pm - 10:01 pm
HLN
-
PDX
5h 43m
1 stop
$343Alaska Airlines
Mon, Sep 14 - Wed, Sep 23
Delta Logo
5:50 am - 12:17 pm
PDX
-
HLN
5h 27m
1 stop
Delta Logo
12:57 pm - 10:02 pm
HLN
-
PDX
10h 05m
2 stops
$348Delta
Tue, Sep 15 - Tue, Sep 22
Delta Logo
5:50 pm - 12:17 pm
PDX
-
HLN
17h 27m
2 stops
Delta Logo
12:57 pm - 10:02 pm
HLN
-
PDX
10h 05m
2 stops
$353Delta
Mon, Sep 14 - Sat, Sep 19
Alaska Airlines Logo
3:00 pm - 4:41 pm
PDX
-
HLN
24h 41m
1 stop
Alaska Airlines Logo
5:18 pm - 10:01 pm
HLN
-
PDX
5h 43m
1 stop
$358Alaska Airlines
Mon, Sep 14 - Tue, Sep 22
Delta Logo
8:44 pm - 12:17 pm
PDX
-
HLN
14h 33m
2 stops
Delta Logo
12:57 pm - 11:54 pm
HLN
-
PDX
11h 57m
2 stops
$363Delta
Tue, Sep 15 - Mon, Sep 21
Delta Logo
5:50 pm - 12:17 pm
PDX
-
HLN
17h 27m
2 stops
Delta Logo
12:57 pm - 10:02 pm
HLN
-
PDX
10h 05m
2 stops
$364Delta
Wed, Sep 16 - Wed, Sep 23
Delta Logo
12:36 pm - 12:17 pm
PDX
-
HLN
22h 41m
2 stops
Delta Logo
12:57 pm - 10:02 pm
HLN
-
PDX
10h 05m
2 stops
$368Delta
Mon, Sep 14 - Mon, Sep 21
Delta Logo
8:44 pm - 12:17 pm
PDX
-
HLN
14h 33m
2 stops
Delta Logo
12:57 pm - 10:02 pm
HLN
-
PDX
10h 05m
2 stops
$374Delta
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 $335 (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 $810 respectively.

Good to know

Low seasonJanuary
Cheapest flight$167
Best time to beat the crowds but there is an average 58% increase in price.
Most popular time to fly with an average 20% increase in price.
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 5 days, the lowest price for a flight from Portland to Helena was $167 for a one-way ticket and $333 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 $478 and an overall rating of 7.8.

  • 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 12532 reviews
7.8Comfort
8.5Crew
7.0Entertainment
7.0Food
8.1Boarding
Airline reviews

Great trip. No complaints. Impressed with the crew’s response to various challenges pre-boarding.

10.0 ExcellentAnonymous, Jun 2026
PDX - OAK
Read more Alaska Airlines reviews

Great trip. No complaints. Impressed with the crew’s response to various challenges pre-boarding.

We were 35 minutes late because the caterer had not stocked the plane. Plane was fully loaded and ready to go 15 minutes before departure time. We sat there 35 minutes?

The seats are too small/crowded. It is frustrating to be forced to sit with someone who is overweight as they crown the other seat. Nothing against the person…just the airline companies who continue(over decades!)to reduce seat sizes. Americans are fat. Those of us who are not are tired of being compromised by the airline companies who don’t faces that fact and make adjustments. Maybe have “overweight seats”? Maybe give us a discount for being forced into an uncomfortable flight due to others overweightness? Please, make adjustments…be accountable. Thanks!

I flew standby with my two children and completely forgot it was Memorial Day weekend. We tried to fly from PDX to YVR. Unfortunately, after four attempts, we gave up and tried SEA instead after the holiday. The ground crew was very helpful, checking us in and accommodating us when we were finally able to get on a flight. The sad part was that they accidentally loaded one of my suitcases on the Vancouver flight without us during one of our attempts to get on a flight, even though it had a standby tag on it. I filed a report with baggage services, and thankfully, it was returned to PDX the following day. AS was in touch with us and updated us on the process of returning the luggage to the USA.

Internet was great. It was nice to watch a movie. The crew was very nice.

On this flight there wer only 25 people on board. So no one in 5 rows ahead of me and noone in 7 rows behind me. So very chill.

Considering my flight to Portland was in a broken chair that I had paid extra for, this one was great. So yeah, wonderful.

Some food or at least snacks need to be offered on long flights. I thought I had ordered food for my husband and I prior to the flight, but was told during the flight that I had not. Perhaps, if you must charge extra for food, let people order on board. We did get some food, which evidently others had decided they didn’t want onboard, but it wasn’t very good. We did like the adherence to takeoff and landing times, and the quick return of our luggage.

Our meal order was screwed up. We had to choose from basic boxes. I was not happy.

very nice blankets and comfortable seats. great service. Great flights.

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

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

Information on your arrival and departure airports