$201+ Cheap flights from Portland to Helena (PDX - HLN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — HLN
Aug 21 — Aug 281
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Helena with Cheapflights
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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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Best
Last-minute
One-way
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 July 22, 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 July 22, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/19. 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 10/206:09 am
PDX
- HLN
1 stop9h 40m
Alaska Airlines
Sat 10/245:26 pm
HLN
- PDX
1 stop6h 36m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 7/20. 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.
Sat 9/55:08 pm
PDX
- HLN
1 stop4h 22m
Delta
Sat 9/1212:57 pm
HLN
- PDX
1 stop4h 08m
Delta
Deal found 7/20![Delta logo]()
$391
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 8/279:30 am
PDX
- HLN
1 stop6h 04m
Alaska Airlines
Mon 8/315:11 pm
HLN
- PDX
1 stop26h 26m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$393
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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 10/911:03 am
PDX
- HLN
1 stop4h 46m
Alaska Airlines
Sun 10/115:26 pm
HLN
- PDX
1 stop16h 02m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$407
This Delta deal was found by Cheapflights users on 7/19. 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 8/205:45 am
PDX
- HLN
1 stop5h 30m
Delta
Sun 8/235:40 am
HLN
- PDX
1 stop3h 57m
Delta
Deal found 7/19![Delta logo]()
$411
This Delta deal was found by Cheapflights users on 7/19. 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 8/185:45 am
PDX
- HLN
1 stop5h 30m
Delta
Mon 8/245:40 am
HLN
- PDX
1 stop3h 57m
Delta
Deal found 7/19![Delta logo]()
$413
This Delta deal was found by Cheapflights users on 7/20. 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 8/275:45 am
PDX
- HLN
1 stop5h 30m
Delta
Mon 8/315:40 am
HLN
- PDX
2 stops6h 02m
Delta
Deal found 7/20![Delta logo]()
$416
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 July 22, 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 July 22, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/19. 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 10/206:09 am
PDX
- HLN
1 stop9h 40m
Alaska Airlines
Sat 10/245:26 pm
HLN
- PDX
1 stop6h 36m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$363
This Delta deal was found by Cheapflights users on 7/19. 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 8/205:45 am
PDX
- HLN
1 stop5h 30m
Delta
Sun 8/235:40 am
HLN
- PDX
1 stop3h 57m
Delta
Deal found 7/19![Delta logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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 10/911:03 am
PDX
- HLN
1 stop4h 46m
Alaska Airlines
Sun 10/115:26 pm
HLN
- PDX
1 stop16h 02m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$407
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 8/279:30 am
PDX
- HLN
1 stop6h 04m
Alaska Airlines
Mon 8/315:11 pm
HLN
- PDX
2 stops41h 36m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 7/21. 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 8/185:45 am
PDX
- HLN
1 stop5h 30m
Delta
Mon 8/245:40 am
HLN
- PDX
1 stop3h 57m
Delta
Deal found 7/21![Delta logo]()
$458
Last-minute flights from Portland to HelenaDiscover last-minute flight deals from Portland to Helena. Data last updated July 22, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Helena. Data last updated July 22, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/20. 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.
Sun 8/165:08 pm
PDX
- HLN
1 stop4h 22m
Delta
Mon 8/1712:55 pm
HLN
- PDX
1 stop4h 08m
Delta
Deal found 7/20![Delta logo]()
$485
This Delta deal was found by Cheapflights users on 7/19. 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 8/185:45 am
PDX
- HLN
1 stop5h 30m
Delta
Mon 8/245:40 am
HLN
- PDX
1 stop3h 57m
Delta
Deal found 7/19![Delta logo]()
$413
This Delta deal was found by Cheapflights users on 7/19. 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 8/205:45 am
PDX
- HLN
1 stop5h 30m
Delta
Sun 8/235:40 am
HLN
- PDX
1 stop3h 57m
Delta
Deal found 7/19![Delta logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 8/279:30 am
PDX
- HLN
1 stop6h 04m
Alaska Airlines
Mon 8/315:11 pm
HLN
- PDX
1 stop26h 26m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$393
This Delta deal was found by Cheapflights users on 7/20. 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 8/275:45 am
PDX
- HLN
1 stop5h 30m
Delta
Mon 8/315:40 am
HLN
- PDX
2 stops6h 02m
Delta
Deal found 7/20![Delta logo]()
$416
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 July 22, 2026.
Search for one-way flight options from Portland to Helena. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
This Delta deal was found by Cheapflights users on 7/21. 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 8/255:08 pm
PDX
- HLN
1 stop4h 22m
Delta
Deal found 7/21![Delta logo]()
$201
This Delta deal was found by Cheapflights users on 7/19. 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.
Sun 9/205:40 am
PDX
- HLN
1 stop5h 37m
Delta
Deal found 7/19![Delta logo]()
$206
This Delta deal was found by Cheapflights users on 7/19. 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 8/115:45 am
PDX
- HLN
1 stop5h 30m
Delta
Deal found 7/19![Delta logo]()
$243
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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 8/262:40 pm
PDX
- HLN
2 stops24h 54m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$261
This Delta deal was found by Cheapflights users on 7/17. 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.
Sat 8/15:14 pm
PDX
- HLN
1 stop4h 25m
Delta
Deal found 7/17![Delta logo]()
$294
This Booking.com deal was found by Cheapflights users on 7/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/252:30 pm
PDX
- HLN
2 stops25h 04m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$297
This Booking.com deal was found by Cheapflights users on 7/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/205:53 pm
PDX
- HLN
2 stops21h 48m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$316
This Booking.com deal was found by Cheapflights users on 7/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/119:30 pm
PDX
- HLN
2 stops18h 02m
Alaska Airlines
Deal found 7/19![Alaska Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/269:46 pm
PDX
- HLN
3 stops17h 48m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$532
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:56 pm
PDX
- HLN
3 stops45h 38m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$536
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:46 pm
PDX
- HLN
3 stops41h 55m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$547
This Expedia deal was found by Cheapflights users on 7/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:37 am
PDX
- HLN
2 stops7h 55m
Alaska Airlines
Deal found 7/17![Alaska Airlines logo]()
$557
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 July 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $363 (Alaska Airlines) |
One-way from | $201 (Delta) |
Popular in | January |
Cheapest in | October |
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 2,558,603 searches. Data last updated July 22, 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 - HLN
PDXHLN
Portland
Tue 10/20
6:09 am-4:49 pm
1 stop9h 40m
Helena
Sat 10/24
5:26 pm-11:02 pm
1 stop6h 36m
$363
PortlandHelena
PDX - HLN
PDXHLN
Portland
Fri 10/9
11:03 am-4:49 pm
1 stop4h 46m
Helena
Sun 10/11
5:26 pm-8:28 am
1 stop16h 02m
$407
Quickest round-trip
PortlandHelena
PDX - HLN
PDXHLN
Portland
Thu 8/20
5:45 am-12:15 pm
1 stop5h 30m
Helena
Sun 8/23
5:40 am-8:37 am
1 stop3h 57m
$411
PortlandHelena
PDX - HLN
PDXHLN
Portland
Thu 8/27
9:30 am-4:34 pm
1 stop6h 04m
Helena
Mon 8/31
5:11 pm-9:47 am
2 stops41h 36m
$411
PortlandHelena
PDX - HLN
PDXHLN
Portland
Tue 8/18
5:45 am-12:15 pm
1 stop5h 30m
Helena
Mon 8/24
5:40 am-8:37 am
1 stop3h 57m
$458
Cheapest one-way
Quickest one-way
PortlandHelena
PDX - HLN
PDXHLN
Portland
Tue 8/25
5:08 pm-10:30 pm
1 stop4h 22m
$201
PortlandHelena
PDX - HLN
PDXHLN
Portland
Wed 8/26
8:07 am-4:34 pm
1 stop7h 27m
$201
PortlandHelena
PDX - HLN
PDXHLN
Portland
Sun 9/20
5:40 am-12:17 pm
1 stop5h 37m
$206
PortlandHelena
PDX - HLN
PDXHLN
Portland
Tue 8/11
5:45 am-12:15 pm
1 stop5h 30m
$243
PortlandHelena
PDX - HLN
PDXHLN
Portland
Sat 8/1
5:14 pm-10:39 pm
1 stop4h 25m
$294
Showing 1-10 of 13 resultsSorted 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 July.
| 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 July 22, 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.
Overall
7.9
Comfort
7.8
Boarding
8.1
Food
7.1
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Overall
7.9
Comfort
7.8
Boarding
8.1
Food
7.1
Crew
8.5
Entertainment
7.0
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Overall
7.9
Comfort
7.8
Boarding
8.1
Food
7.1
Crew
8.5
Entertainment
7.0
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 July 22, 2026.
Portland and Helena flights
Browse other Portland and Helena flight options. Last updated on July 22, 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 July 22, 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 2,558,603 searches. Data last updated July 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$158 | Average$478 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$341 | Average$455 | FlexibilityNo cancel fee | On-time75% |