$273+ Cheap flights from Portland to Helena (PDX - HLN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — HLN
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portland to Helena
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Cheapest flights from Portland to HelenaExplore the most affordable flight options available from Portland to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
Explore the most affordable flight options available from Portland to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/125:00 am -
1 stop9h 31m
Tue 12/154:08 pm -
1 stop9h 02m
Deal found 9/6![Alaska Airlines logo]()
$313
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:03 am -
1 stop4h 46m
Sun 10/185:26 pm -
1 stop16h 02m
Deal found 9/4![Alaska Airlines logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:31 am -
1 stop6h 18m
Sat 10/245:26 pm -
1 stop6h 36m
Deal found 9/4![Alaska Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:44 pm -
2 stops14h 44m
Sat 10/241:08 pm -
2 stops7h 52m
Deal found 9/4![Delta logo]()
$433
This Priceline deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:09 am -
1 stop7h 40m
Sat 10/245:26 pm -
1 stop6h 36m
Deal found 9/4![Alaska Airlines logo]()
$438
This Alaska Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:31 am -
1 stop6h 18m
Mon 10/125:26 pm -
1 stop5h 30m
Deal found 9/3![Alaska Airlines logo]()
$445
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:53 pm -
2 stops24h 56m
Sat 10/245:26 pm -
1 stop17h 21m
Deal found 9/4![Alaska Airlines logo]()
$456
This Alaska Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:32 pm -
1 stop18h 17m
Tue 10/65:26 pm -
1 stop16h 02m
Deal found 9/7![Alaska Airlines logo]()
$463
Best flights from Portland to HelenaDiscover carefully curated flight deals from Portland to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from Portland to Helena that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/125:00 am -
1 stop9h 31m
Tue 12/154:08 pm -
1 stop9h 02m
Deal found 9/6![Alaska Airlines logo]()
$313
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:15 pm -
1 stop4h 09m
Fri 10/237:15 am -
1 stop5h 48m
Deal found 9/4![Delta logo]()
$465
This Alaska Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:31 am -
1 stop6h 18m
Mon 10/125:26 pm -
1 stop5h 30m
Deal found 9/3![Alaska Airlines logo]()
$445
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:33 am -
1 stop5h 55m
Fri 10/237:15 am -
1 stop5h 48m
Deal found 9/4![Delta logo]()
$485
This Alaska Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:32 pm -
1 stop18h 17m
Tue 10/65:26 pm -
1 stop16h 02m
Deal found 9/7![Alaska Airlines logo]()
$463
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:24 pm -
1 stop4h 02m
Sat 11/211:07 pm -
2 stops8h 37m
Deal found 9/4![Delta logo]()
$490
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:40 am -
1 stop5h 37m
Sat 10/312:57 pm -
2 stops10h 34m
Deal found 9/7![Delta logo]()
$570
Last-minute flights from Portland to HelenaDiscover last-minute flight deals from Portland to Helena. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Helena. Data last updated September 8, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:32 pm -
1 stop18h 17m
Tue 10/65:26 pm -
1 stop16h 02m
Deal found 9/7![Alaska Airlines logo]()
$463
This Alaska Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:31 am -
1 stop6h 18m
Mon 10/125:26 pm -
1 stop5h 30m
Deal found 9/3![Alaska Airlines logo]()
$445
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:03 am -
1 stop4h 46m
Sun 10/185:26 pm -
1 stop16h 02m
Deal found 9/4![Alaska Airlines logo]()
$404
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:31 am -
1 stop6h 18m
Sat 10/245:26 pm -
1 stop6h 36m
Deal found 9/4![Alaska Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/208:44 pm -
2 stops14h 44m
Sat 10/241:08 pm -
2 stops7h 52m
Deal found 9/4![Delta logo]()
$433
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:33 am -
1 stop5h 55m
Fri 10/231:08 pm -
2 stops9h 48m
Deal found 9/4![Delta logo]()
$464
This Alaska Airlines deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:53 pm -
2 stops24h 56m
Sat 10/245:26 pm -
1 stop17h 21m
Deal found 9/4![Alaska Airlines logo]()
$456
This Priceline deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:09 am -
1 stop7h 40m
Sat 10/245:26 pm -
1 stop6h 36m
Deal found 9/4![Alaska Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:33 am -
1 stop5h 55m
Fri 10/231:08 pm -
2 stops9h 48m
Deal found 9/4![Delta logo]()
$484
One-way flights from Portland to HelenaSearch for one-way flight options from Portland to Helena. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
Search for one-way flight options from Portland to Helena. Find affordable one-way fares based on user searches. Data last updated September 8, 2026.
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:40 am -
1 stop5h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:23 pm -
2 stops21h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$404
Find flight deals from Portland to Helena
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Helena (HLN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $404 (Alaska Airlines) |
One-way from | $273 (Delta) |
Popular in | July |
Cheapest in | February |
Average price | $502 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Helena that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 8, 2026.
Use the filters below to find and compare flights from Portland to Helena that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandHelena
PDX Portland - HLN Helena
PDXHLN
Portland
Sat 12/12
5:00 am-3:31 pm
1 stop9h 31m
Helena
Tue 12/15
4:08 pm-12:10 am
1 stop9h 02m
$313
PortlandHelena
PDX Portland - HLN Helena
PDXHLN
Portland
Fri 9/25
3:23 pm-1:48 pm
2 stops21h 25m
Helena
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$404
PortlandHelena
PDX Portland - HLN Helena
PDXHLN
Portland
Wed 10/7
9:31 am-4:49 pm
1 stop6h 18m
Helena
Mon 10/12
5:26 pm-9:56 pm
1 stop5h 30m
$445
PortlandHelena
PDX Portland - HLN Helena
PDXHLN
Portland
Fri 10/2
9:32 pm-4:49 pm
1 stop18h 17m
Helena
Tue 10/6
5:26 pm-8:28 am
1 stop16h 02m
$463
Quickest round-trip
PortlandHelena
PDX Portland - HLN Helena
PDXHLN
Portland
Tue 10/20
5:15 pm-10:24 pm
1 stop4h 09m
Helena
Fri 10/23
7:15 am-12:03 pm
1 stop5h 48m
$465
PortlandHelena
PDX Portland - HLN Helena
PDXHLN
Portland
Thu 10/22
5:33 am-12:28 pm
1 stop5h 55m
Helena
Fri 10/23
7:15 am-12:03 pm
1 stop5h 48m
$485
PortlandHelena
PDX Portland - HLN Helena
PDXHLN
Portland
Thu 11/19
5:24 pm-10:26 pm
1 stop4h 02m
Helena
Sat 11/21
1:07 pm-8:44 pm
2 stops8h 37m
$490
PortlandHelena
PDX Portland - HLN Helena
PDXHLN
Portland
Fri 10/2
5:40 am-12:17 pm
1 stop5h 37m
Helena
Sat 10/3
12:57 pm-10:31 pm
2 stops10h 34m
$570
Sorted by cheapest first
Compare providers for flights from Portland to Helena
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Helena in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Helena flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Helena flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Helena flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-Helena flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Helena flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Portland to Helena
Have a flexible travel schedule? Discover the best time to fly to Helena from Portland with our price prediction graph.
PDX-HLN
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Reviews of airlines servicing Helena
Get insights into the airlines that provide service to Helena. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helena. Reviews last updated September 8, 2026.
Read through reviews of airlines operating flights from Portland to Helena, such as Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Related info for your journey
Find useful and relevant information for your journey from Portland to Helena. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Portland to Helena
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Complete your trip
Complete your trip to Helena by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Helena by cabin class
Find flights from Portland to Helena, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Helena
Explore flights to Helena departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 8, 2026.
Portland and Helena flights
Browse other Portland and Helena flight options. Last updated on September 8, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on September 8, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from Portland to Helena
Discover the top 2 airlines that operate flights from Portland to Helena. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$158 | Average$478 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$367 | Average$489 | FlexibilityNo cancel fee | On-time75% |