HLN - PDX

$141 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 3/8. 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 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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Everything you should know

Cheapest round-trip
$259
Typical prices: $326-$456
Alaska Airlines
Sat 4/25Tue 5/5
HLN - PDX • 1 stop
Cheapest one-way
$141
Delta
Sun 3/8
HLN - PDX • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $259 (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 • 30% price drop
May
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 Portland!
Flight Deals
Booking Insights
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, Apr 25 - Tue, May 5
Alaska Airlines Logo
6:22 pm - 10:53 pm
HLN
-
PDX
5h 31m
1 stop
Alaska Airlines Logo
11:59 am - 5:45 pm
PDX
-
HLN
4h 46m
1 stop
$259Alaska Airlines
Sat, Mar 7 - Sat, Mar 14
Delta Logo
5:30 am - 9:15 am
HLN
-
PDX
4h 45m
1 stop
Delta Logo
5:45 am - 12:21 pm
PDX
-
HLN
5h 36m
1 stop
$288Delta
Sat, Apr 25 - Tue, May 5
Alaska Airlines Logo
6:22 pm - 10:53 pm
HLN
-
PDX
5h 31m
1 stop
Alaska Airlines Logo
2:50 pm - 5:45 pm
PDX
-
HLN
25h 55m
2 stops
$304Alaska Airlines
Mon, Mar 2 - Sat, Mar 7
Delta Logo
5:30 am - 9:15 am
HLN
-
PDX
4h 45m
1 stop
Delta Logo
5:45 am - 12:25 pm
PDX
-
HLN
5h 40m
1 stop
$366Delta
Sat, Apr 25 - Tue, May 5
Alaska Airlines Logo
6:22 pm - 6:14 am
HLN
-
PDX
12h 52m
2 stops
Alaska Airlines Logo
7:50 am - 5:45 pm
PDX
-
HLN
8h 55m
2 stops
$370Alaska Airlines
Wed, Jun 17 - Tue, Jun 23
Alaska Airlines Logo
4:59 pm - 9:35 pm
HLN
-
PDX
5h 36m
1 stop
Alaska Airlines Logo
9:00 am - 4:22 pm
PDX
-
HLN
6h 22m
1 stop
$375Alaska Airlines
Fri, Mar 6 - Sun, Mar 8
Alaska Airlines Logo
4:36 pm - 8:49 am
HLN
-
PDX
17h 13m
1 stop
Alaska Airlines Logo
6:00 am - 3:59 pm
PDX
-
HLN
8h 59m
1 stop
$383Alaska Airlines
Fri, Jun 5 - Sun, Jun 7
Alaska Airlines Logo
4:43 pm - 9:28 pm
HLN
-
PDX
5h 45m
1 stop
Alaska Airlines Logo
10:31 am - 4:06 pm
PDX
-
HLN
4h 35m
1 stop
$409Alaska Airlines
Fri, Mar 6 - Sun, Mar 8
Delta Logo
1:10 pm - 6:16 pm
HLN
-
PDX
6h 06m
1 stop
Delta Logo
5:45 am - 12:21 pm
PDX
-
HLN
5h 36m
1 stop
$417Delta
Fri, Mar 6 - Sun, Mar 8
Alaska Airlines Logo
4:36 pm - 4:47 pm
HLN
-
PDX
25h 11m
2 stops
Alaska Airlines Logo
8:30 am - 3:59 pm
PDX
-
HLN
6h 29m
1 stop
$426Alaska Airlines
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?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Helena to Portland departing in April.

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 $441 and $427 respectively.

Good to know

Low seasonJanuary
Cheapest flight$141
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 25% 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 $141 for a one-way ticket and $259 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?

    oneworld, and SkyTeam are the airline alliances operating flights between Helena and Portland, with oneworld 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 $350 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 $428 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 11884 reviews
7.0Entertainment
8.1Boarding
7.8Comfort
7.1Food
8.5Crew
Airline reviews

Everything was fine. The snacks are a little on the tiny side.

10.0 ExcellentAnonymous, Feb 2026
MFR - PDX
Read more Alaska Airlines reviews

Everything was fine. The snacks are a little on the tiny side.

Santa Rosa Airport is the best! Glad to have experienced it.

Delay for switching planes. Then delay after delay (mechanical) after boarding so that we were almost 3 hrs late, getting in at 230am. Crew was good.

Flight attendants made this flight wonderful. They made sure everyone had what they needed and anticipated future needs. They made adjustments as needed. It was clear this was an experienced crew.

Very delayed for seemingly no reason. Made me miss an event

we bought Mediterranean boxes for lunch. The salami in mine had gone bad long ago, but my partner had good salami and could eat it. Could I buy assigned seats? I guess that I didn't spend enough, so sat at the back of the plane

the flight attendant was so great and the upgrade to first class was top notch

There was no food or entertainment, thus thus the neutral rating.

The Alaska Airlines app made it very difficult to find my boarding pass. It was very frustrating to use! The flight itself was flawless.

No communication with delayed and canceled flights. Completely in the dark for the whole experience.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Good experience and the flight landed early. There was no food I had or entertainment.

Flight was delayed and no reasons provided. After the passengers were boarded, the crew made announcement that the captain has jot arrived and he would take another 15 mins. All passengers patiently sat until the captain came and started. Terrible experience!

Flight was delayed. No information on why it was delayed. After we boarded the flight, , the crew made announcement that the captain hs not arrived and he will take 15 mins more to arrive. Passengers were just sitting patiently for the captain to arrive and start, Terrible experience.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

Smallest leg room I've ever had on a plane.

They took all carry-on luggage from Groups 6 -9 - I was group 5 and waiting in line to board - they made me check my luggage too. That then went to baggage claim and delayed departure from the airport. There was overhead room in my seating area - Delta over reacted. Also, had a gentleman next to me that took up 1/2 my seat.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

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

Information on your arrival and departure airports