PDX - HLN

$204 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 12/26. 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

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
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Flights 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

Wed, Sep 3 - Tue, Sep 9
Alaska Airlines Logo
6:05 am - 3:21 pmPDX-HLN
8h 16m1 stop
Alaska Airlines Logo
4:02 pm - 12:15 amHLN-PDX
9h 13m1 stop
$284Alaska Airlines
Find Deal
Wed, Aug 20 - Mon, Aug 25
Alaska Airlines Logo
1:24 pm - 3:21 pmPDX-HLN
24h 57m1 stop
Alaska Airlines Logo
4:02 pm - 12:24 pmHLN-PDX
21h 22m1 stop
$322Alaska Airlines
Find Deal
Wed, Sep 3 - Tue, Sep 9
Alaska Airlines Logo
6:05 am - 3:21 pmPDX-HLN
8h 16m1 stop
Alaska Airlines Logo
4:02 pm - 6:17 amHLN-PDX
15h 15m2 stops
$323Alaska Airlines
Find Deal
Fri, Aug 29 - Wed, Sep 3
Alaska Airlines Logo
4:46 pm - 3:21 pmPDX-HLN
21h 35m1 stop
Alaska Airlines Logo
4:02 pm - 10:47 pmHLN-PDX
7h 45m1 stop
$334Alaska Airlines
Find Deal
Fri, Aug 29 - Wed, Sep 3
Delta Logo
5:35 am - 12:20 pmPDX-HLN
5h 45m1 stop
Delta Logo
5:50 am - 8:51 amHLN-PDX
4h 01m1 stop
$337Delta
Find Deal
Fri, Aug 29 - Wed, Sep 3
Delta Logo
5:35 am - 12:20 pmPDX-HLN
5h 45m1 stop
Delta Logo
5:50 am - 8:51 amHLN-PDX
4h 01m1 stop
$338Delta
Find Deal
Fri, Aug 22 - Sun, Aug 24
Delta Logo
5:05 pm - 10:13 pmPDX-HLN
4h 08m1 stop
Delta Logo
5:50 am - 8:51 amHLN-PDX
4h 01m1 stop
$367Delta
Find Deal
Fri, Aug 29 - Wed, Sep 3
United Airlines Logo
6:27 pm - 1:30 pmPDX-HLN
18h 03m1 stop
United Airlines Logo
5:20 pm - 8:37 pmHLN-PDX
28h 17m2 stops
$550United Airlines
Find Deal
Wed, Aug 27 - Tue, Sep 2
United Airlines Logo
5:40 pm - 9:11 pmPDX-HLN
26h 31m2 stops
United Airlines Logo
5:20 pm - 6:29 pmHLN-PDX
26h 09m2 stops
$561United Airlines
Find Deal
Fri, Aug 29 - Wed, Sep 3
United Airlines Logo
5:40 pm - 4:04 pmPDX-HLN
21h 24m2 stops
United Airlines Logo
5:20 pm - 8:37 pmHLN-PDX
28h 17m2 stops
$566United Airlines
Find Deal
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’s the cheapest day of the week to fly from Portland to Helena?

The average price of all round-trip flights from Portland to Helena clicked on KAYAK for each day over the last 12 months.

When flying from Portland to Helena, you should consider leaving on a Saturday and avoid Mondays if you are looking for the best rates. For your return to Portland, you’ll find the best rates on Tuesdays and the most expensive ones on Sundays.

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 January, where tickets cost $286 (return) on average. On the other hand, the most expensive months are October and February, where the average cost of round-trip tickets is $615 and $473 respectively.

Good to know

Low seasonJanuary
Cheapest flight$204
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 8% 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 3 days, the lowest price for a flight from Portland to Helena was $204 for a one-way ticket and $284 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, oneworld, and Star Alliance 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 $397 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $398 and an overall rating of 8.0.

  • 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.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Entertainment
8.5Crew
7.1Food
8.1Boarding
7.8Comfort
Airline reviews

TERRIFIC! Thank you all. Jason Robert Kidwell My favorite flight attendants.

10.0 ExcellentJason, Jul 2025PDX - DCA
Read more Alaska Airlines reviews

TERRIFIC! Thank you all. Jason Robert Kidwell My favorite flight attendants.

I liked Alaska better than other carriers that I have EVER used. Unfortunately, the plane from LAX to Guanacaste leg of my journey had some mechanical problems and had to return to LAX - causing my journey to be very long and added a day to my total trip. The Airline was very prompt in offering their apology and have given me credit to use for my next flight. I thought the terminal in LAX was too cold for comfort, especially if there is a long wait between flights.

Not having to pay 160$ for a 20 lb and 12 lb bag that were clearly under 50 lbs and they overcharged me for them

We have always flown with Alaska when we can. As they have great customer service. This trip we had to transfer to Air LINGUS in Denver to go to Dublin. That’s where things went bad! Our checked luggage didn’t arrive. The process to make a claim was way more complicated than it should be. It took 5 days to recover our luggage. The whole time we couldn’t talk to a real person who could tell us anything. The whole time Alaska blamed Air lingus and vis a versa. No one seemed want to help us. That was the worst part.

I'm a platinum member with American Airlines, however, my ticket did not display status and thus I did not board with an early group. I traveled with my two daughters and we were given a row of seats that did not recline. Not the treatment I would have expected for a platinum customer. The flight was also a bit late leaving Portland. Also on my flight to Portland we were not given premium seats. In fact, we were in the last row of the aircraft.

5 hour delay from Portland to Newark. Boarded and then were told we had to get off and wait five hours for flight. No food vouchers or any other compensation because they said it was an air traffic control issue. Plane is bare minimum like a discount airline. They have free entertainment but you have to get to it on your own device no screens in the seats

Very good. Gate personnel were excellent flight attendants were also able to change my seat at the last minute everyone, courteous, polite, and.

On time, smooth take off and landing, efficient boarding. Gate staff excellent, stewardess grumpy, but civil enough.

No WiFi available. It was too late to order food also. Guy next to me was huge (not fat) so had his shoulder & thigh next to me the whole way. Plane was delayed leaving PDX due to 8 other planes waiting. Not my best Alaska airlines flight.

Check in, they should have told me that upon arrival i needed to exit the secure area and re-check in with Eva Air. I wasn't sure what to do upon arrival at S.F.

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Food was surprisingly good but the WiFi was not great

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

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