HLN - PDX

$146 Find Cheap Flights from Helena to Portland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to Portland departing on 11/15. 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 Portland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to Portland, 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 Helena to Portland, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Helena to Portland (HLN-PDX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helena to Portland 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 Helena to Portland

Sat, Oct 11 - Sat, Oct 18
Delta Logo
1:00 pm - 7:19 pmHLN-PDX
7h 19m2 stops
Delta Logo
5:40 am - 12:20 pmPDX-HLN
5h 40m1 stop
$298Delta
Find Deal
Sat, Oct 11 - Fri, Oct 17
Delta Logo
1:00 pm - 7:19 pmHLN-PDX
7h 19m2 stops
Delta Logo
7:59 pm - 12:20 pmPDX-HLN
15h 21m2 stops
$309Delta
Find Deal
Fri, Oct 10 - Sat, Oct 18
Alaska Airlines Logo
6:18 pm - 6:20 amHLN-PDX
13h 02m1 stop
Alaska Airlines Logo
7:20 am - 5:41 pmPDX-HLN
9h 21m1 stop
$312Alaska Airlines
Find Deal
Thu, Dec 11 - Sun, Jan 11
Delta Logo
1:06 pm - 10:40 pmHLN-PDX
10h 34m2 stops
Delta Logo
5:55 am - 12:27 pmPDX-HLN
5h 32m1 stop
$321Delta
Find Deal
Fri, Oct 10 - Fri, Oct 17
Alaska Airlines Logo
6:18 pm - 12:25 pmHLN-PDX
19h 07m1 stop
Alaska Airlines Logo
2:30 pm - 5:41 pmPDX-HLN
26h 11m1 stop
$322Alaska Airlines
Find Deal
Fri, Nov 7 - Mon, Nov 10
Alaska Airlines Logo
6:13 pm - 6:17 amHLN-PDX
13h 04m1 stop
Alaska Airlines Logo
10:28 pm - 5:36 pmPDX-HLN
18h 08m1 stop
$343Alaska Airlines
Find Deal
Thu, Dec 11 - Sun, Jan 11
Delta Logo
1:06 pm - 10:40 pmHLN-PDX
10h 34m2 stops
Delta Logo
5:45 pm - 12:27 pmPDX-HLN
17h 42m2 stops
$351Delta
Find Deal
Sat, Oct 11 - Fri, Oct 17
Alaska Airlines Logo
6:18 pm - 6:20 amHLN-PDX
13h 02m1 stop
Alaska Airlines Logo
9:40 pm - 5:41 pmPDX-HLN
19h 01m2 stops
$361Alaska Airlines
Find Deal
Thu, Dec 11 - Sun, Jan 11
United Airlines Logo
6:30 am - 10:52 pmHLN-PDX
17h 22m2 stops
United Airlines Logo
5:00 am - 9:26 pmPDX-HLN
15h 26m1 stop
$518United Airlines
Find Deal
Wed, Nov 26 - Sun, Nov 30
United Airlines Logo
2:22 pm - 10:53 amHLN-PDX
21h 31m2 stops
United Airlines Logo
9:45 pm - 9:22 pmPDX-HLN
22h 37m1 stop
$928United Airlines
Find Deal

Everything you should know

Top airlines
Delta
Cheapest • from $298 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
July
Cheapest • 32% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$298
Typical prices: $246-384
Delta
Sat 10/11Sat 10/18
HLN - PDX • 2 stops
Cheapest one-way
$146
Delta
Sat 11/15
HLN - PDX • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Portland!
Booking Insights

KAYAK's insights & trends for Helena to Portland flights

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

How much is a round-trip flight from Helena to Portland?

What’s the cheapest day of the week to fly from Helena to Portland?

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

If your flying dates are flexible, you should consider flying to Portland on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Helena to Portland. For your return ticket, we recommend flying on a Saturday and avoiding Mondays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Helena to Portland, 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 Helena to Portland is July, where tickets cost $238 (return) on average. On the other hand, the most expensive months are November and May, where the average cost of round-trip tickets is $507 and $486 respectively.

Good to know

Low seasonApril
Cheapest flight$146
Best time to beat the crowds but there is an average 21% increase in price.
Most popular time to fly with an average 38% increase in price.
Flight from Helena to Portland

When to book flights from Helena to Portland

Are your dates flexible? Find out the best times to travel from Helena to Portland 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 Helena to Portland

  • What is the cheapest flight from Helena to Portland?

    In the last 3 days, the lowest price for a flight from Helena to Portland was $146 for a one-way ticket and $298 for a round-trip.

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

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

  • Which airports will I be using when flying from Helena to Portland?

    When flying out of Helena you will be using Helena. You will be landing at Portland, also known as Portland.

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

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

  • Which airline alliances offer flights from Helena to Portland?

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

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

    The two airlines most popular with KAYAK users for flights from Helena to Portland are Alaska Airlines and Delta. With an average price for the route of $277 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 $425 and an overall rating of 7.9.

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

    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 Helena to Portland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Helena 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 Helena to Portland?

    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 Portland with an airline and back to Helena with another airline. Booking your flights between Helena and PDX 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 Helena to Portland?

    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 Portland from Helena 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 Helena to Portland

 
See real verified KAYAK customer reviews for airlines flying from Helena to Portland. 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 Helena to Portland? 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
8.1Boarding
7.8Comfort
8.5Crew
7.1Entertainment
7.1Food
Airline reviews

The first leg of the trip was excellent. Lovely flight attendants and comfortable plane. The second leg left a lot to be desired. The flight attendant was rude when I asked for a Diet Coke, the boarding required quite a long walk and the plane was crammed and uncomfortable.

10.0 ExcellentAnonymous, Sep 2025ONT - PDX
Read more Alaska Airlines reviews

The first leg of the trip was excellent. Lovely flight attendants and comfortable plane. The second leg left a lot to be desired. The flight attendant was rude when I asked for a Diet Coke, the boarding required quite a long walk and the plane was crammed and uncomfortable.

Planes were on time. Pilot kept everyone updated. Crew was friendly and helpful

You no longer give receipts for baggage at the counter. And it is next to impossible to get it on your webpage. Spent 20 min trying and gave up... I need receipt to submit for reimbursement and don't have time to waste on your poor webpage Disappointing .....

The flight attendants were unkempt and show no customer service skills. They avoided eye contact. There were no smiles and they were dismissive and snarky.

Complete flight rebooked and 6 hours delayed. Zero accountability from the airline or Kayak for the issues and I’m injured which is why I opted to pay more to fly than drive because it’s painful to sit or stand too long. What was supposed to be a 3ish hour travel day turned into a 9 hour excruciatingly painful experience that has left me in worse pain than when I initially started.

It was a good flight, short so there was no food or water service

Checking in very confusing compared to Hawaiian Airlines - much simpler! Front checking in at airport can improve. Hawaiian service always gives the extra mile, with a smile. Alaska can use and spread the Aloha Spirit. Mahalo nui loa Thank you 🤙

Plane was delayed getting boarded and then again delayed in take-off order. Alaska Airlines must have very little clout at JFK so they don't get priority treatment. All the delays meant we missed the last flight from Portland to Eugene. Alaska did give us hotel voucher for the night...but sent us to a downtown Portland hotel rather than to a nearby airport motel which made for a longer ride at night and then again in the morning. Just made an already long, late night even longer. Hotel was an old outdated Hilton in a slightly seedy part of town. Alaska gave us Lyft vouchers for getting to the hotel, but the return voucher for getting back to the airport in the morning didn't work.

Not a fan of a 5 hour delay. I received a text from Alaska Airlines advising I would get a $100 travel voucher via email. Several days later I still haven’t received it.

My email notifications were silenced, so I didn't get word that the departing flight had changed gates. It wasn't until I noticed that few people had gathered for the flight that I checked the airport schedule board, 20 minutes before boarding. I then told several people at the old gate of the change. If I was to receive a text I would have been notified of the change earlier, Or to hear an announcement over the airport intercom.

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

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

Information on your arrival and departure airports

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