PDX - HLN

$155 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 6/6. 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
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Everything you should know

Cheapest round-trip
$350
Typical prices: $415-$376
Delta
Mon 6/1Tue 6/9
PDX - HLN • 1 stop
Cheapest one-way
$155
Delta
Sat 6/6
PDX - HLN • 1 stop
Top airlines
Cheapest • from $350 (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 $467 (round-trip)
Shortest trip • 4h 41m (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

Mon, Jun 1 - Tue, Jun 9
Delta Logo
5:05 pm - 10:33 pm
PDX
-
HLN
4h 28m
1 stop
Delta Logo
1:00 pm - 6:22 pm
HLN
-
PDX
6h 22m
1 stop
$350Delta
Tue, May 26 - Tue, Jun 2
Delta Logo
5:05 pm - 10:33 pm
PDX
-
HLN
4h 28m
1 stop
Delta Logo
5:45 am - 8:52 am
HLN
-
PDX
4h 07m
1 stop
$357Delta
Mon, Jun 1 - Tue, Jun 9
Alaska Airlines Logo
5:00 am - 4:06 pm
PDX
-
HLN
10h 06m
1 stop
Alaska Airlines Logo
4:43 pm - 9:28 pm
HLN
-
PDX
5h 45m
1 stop
$361Alaska Airlines
Tue, May 26 - Tue, Jun 2
Alaska Airlines Logo
5:00 am - 4:06 pm
PDX
-
HLN
10h 06m
1 stop
Alaska Airlines Logo
4:43 pm - 9:28 pm
HLN
-
PDX
5h 45m
1 stop
$367Alaska Airlines
Sat, May 30 - Wed, Jun 3
Alaska Airlines Logo
9:44 am - 4:06 pm
PDX
-
HLN
5h 22m
1 stop
Alaska Airlines Logo
4:43 pm - 9:28 pm
HLN
-
PDX
5h 45m
1 stop
$371Alaska Airlines
Tue, Jun 2 - Fri, Jun 5
Alaska Airlines Logo
5:00 am - 4:06 pm
PDX
-
HLN
10h 06m
1 stop
Alaska Airlines Logo
4:43 pm - 8:21 pm
HLN
-
PDX
4h 38m
1 stop
$396Alaska Airlines
Tue, May 26 - Tue, Jun 2
Alaska Airlines Logo
2:35 pm - 4:06 pm
PDX
-
HLN
24h 31m
2 stops
Alaska Airlines Logo
4:43 pm - 8:02 am
HLN
-
PDX
16h 19m
1 stop
$411Alaska Airlines
Sat, May 30 - Wed, Jun 3
Alaska Airlines Logo
8:44 am - 4:06 pm
PDX
-
HLN
6h 22m
1 stop
Alaska Airlines Logo
4:43 pm - 7:46 pm
HLN
-
PDX
28h 03m
2 stops
$418Alaska Airlines
Mon, Jun 1 - Fri, Jun 5
Alaska Airlines Logo
5:46 pm - 4:06 pm
PDX
-
HLN
21h 20m
1 stop
Alaska Airlines Logo
4:43 pm - 4:50 pm
HLN
-
PDX
25h 07m
1 stop
$433Alaska Airlines
Fri, Sep 4 - Tue, Sep 8
Alaska Airlines Logo
9:30 am - 4:34 pm
PDX
-
HLN
6h 04m
1 stop
Alaska Airlines Logo
5:18 pm - 10:01 pm
HLN
-
PDX
5h 43m
1 stop
$435Alaska 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.

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

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

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$155
Best time to beat the crowds but there is an average 59% increase in price.
Most popular time to fly and prices are also 12% 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 $155 for a one-way ticket and $350 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 $452 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 $428 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 12314 reviews
7.1Food
7.8Comfort
8.1Boarding
7.0Entertainment
8.5Crew
Airline reviews

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

10.0 ExcellentAnonymous, Apr 2026
PDX - SEA
Read more Alaska Airlines reviews

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

great experience just at the end, we got in early and there wasn't anyone at the gate for 30 min so we had to just sit on the tarmac

Generally Good. Outbound flight was marred by a continuously s creaming baby. Fortunately the flight was only 90 mins long it would be nice if people traveling with small childres could be centered in one part of the plane. Also, you need to adapt your servey to include a "not applicable " option for things like food and entertainment, which are not offered on shorter flights. I fily Alaska by choice as given all the cirumstances, I fel\el you do a good job.

I was seating in 26A and the children in 27A and B were kicking me non-stop. They kicked me for hours nonstop and the parents refused to get off their phones or correct them. I kindly asked multiple times and got screamed at by the mom that her son is disabled. I told her I get it, but that I matter too and she is responsible for her child. He then kicked me so hard my drink spilled. Not one crew member or other passenger said or did a thing. It was so horrible.

Birding was slow. extremely slow; please do experiments on efficient plane boarding experiences; especially regarding passengers that pass their seat number…

Pretty smooth ride!… a little tight in the back and would’ve loved to had a movie screen… couldn’t beat the price to the West Coast!

I like not much people. Could tell the kids to be quiet.

I liked everything except, I left a brand new Switch 2 on the plane and talking to anybody about it is nearly impossible. I had to fill out a form and hope they get back to me in the next 2 weeks. I really hope they contact me. I saved for that thing for over a year and my son is heart broken.

Fight attendant excellent Food very good, not great Seats were stiff and uncomfortable Flight was overall very nice. Last three flights were burdened with miserably uncomfortable seats. Hard stiff no padding.

The ground crew was very good. They communicated clearly and continued updating. The flight crew was fine. The flight crew on the March 20th flight from MCI to Portland was excellent.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

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

Information on your arrival and departure airports