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Find cheap one-way flights from Helena to Portland starting at US$171.

Whether you’re going for a one-way or round-trip to Portland, we’ve got you covered! Check out these different flight options from Helena below.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Helena to Portland Flight time & Schedules

Flight info.
Departure
Arrival
Weekly Schedule
  1. DL3901

    05:45

    HLN

    1.5h

    07:13

    SLC

    SMTWTFS
  2. DL1209

    11:31

    SLC

    1.9h

    12:28

    PDX

    SMTWTFS
  3. DL3901

    05:45

    HLN

    1.5h

    07:13

    SLC

    SMTWTFS
  4. DL1203

    08:05

    SLC

    2.0h

    09:05

    PDX

    SMTWTFS
  5. DL3880

    13:00

    HLN

    1.5h

    14:30

    SLC

    SMTWTFS
  6. DL2817

    15:15

    SLC

    2.4h

    16:40

    SEA

    SMTWTFS
  7. DL3913

    18:16

    SEA

    1.0h

    19:18

    PDX

    SMTWTFS
  8. DL3880

    13:00

    HLN

    1.5h

    14:30

    SLC

    SMTWTFS
  9. DL714

    17:10

    SLC

    2.1h

    18:16

    PDX

    S--WT-S
  10. AS2222

    16:11

    HLN

    1.8h

    16:56

    SEA

    SMTWTFS
  11. AS2076

    17:59

    SEA

    1.0h

    18:57

    GEG

    SMTWT--
  12. AS2372

    21:24

    GEG

    1.6h

    22:59

    PDX

    SMTWT-S
  13. AS2222

    16:11

    HLN

    1.8h

    16:56

    SEA

    SMTWTFS
  14. AS146

    20:59

    SEA

    0.9h

    21:54

    PDX

    SMTWTFS
  15. AS2222

    16:11

    HLN

    1.8h

    16:56

    SEA

    SMTWTFS
  16. AS958

    19:55

    SEA

    0.9h

    20:51

    PDX

    SMTWTFS
  17. AS2222

    16:11

    HLN

    1.8h

    16:56

    SEA

    SMTWTFS
  18. AS3491

    18:30

    SEA

    0.9h

    19:22

    PDX

    S--WT--
  19. HA4908

    16:19

    HLN

    1.7h

    17:00

    SEA

    SMTWTFS
  20. HA6540

    20:59

    SEA

    0.9h

    21:54

    PDX

    SMTWTFS
  21. AS2322

    17:00

    HLN

    1.7h

    17:41

    SEA

    ------S
  22. AS2387

    19:50

    SEA

    0.9h

    20:45

    PDX

    SMTWTFS

Cheapest airlines flights from Helena to Portland

We have a range of prices from different airlines providing flights from Helena to Portland. Check below for the journey which best suits your travel needs.

Frequently Asked Questions

  • When are flight tickets from Helena (HLN) to Portland (PDX) the cheapest?

    Airlines adjust prices for flights from Helena to Portland based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Helena (HLN) to Portland (PDX) cost?

    According to Trip.com's data, the lowest price is around $397.

How to find a cheap flight from Helena to Portland

If you don’t know some of the key things to look out for when buying flight tickets, prices can often end up sky high or, worse, sold out! We’ve carefully compiled our six most important steps to help ensure you’re getting the best deals when planning your next journey.
1
Being flexible with your dates to get the cheapest Helena to Portland ticket.
Tap "Date" on flight search bar to scan through the calender for Helena to Portland airfare over next 6 months in 2025. If you would like to fly in next 3 months, it seems the cheapest date is on Mon, Mar 10 at US$171 for one-way flights.
2
Compare cheap Helena to Portland flight deals from over hundreds of airlines.
Our extensive search allows you to compare prices from over 500 airlines to choose the cheapest flight tickets from Helena to Portland. The cheapest airline operating is Alaska Airlines.
3
Set up a Price Alert
By setting up a Price Alert for your Helena to Portland route, you can easily track the price of your airline tickets from Helena to Portland without manually checking every day.
4
Don't miss cheap Helena to Portland flight deals and promo codes.
You can always get the latest deals through Trip.com Deals and Promo Codes for cheap flights for cheap flights. If registering a free membership, you can receive more deals for your flights.
5
Book early or wait unitl the last minute.
It's always better to book early. Flight tickets tend to be the cheapest when they are first released, normally about a year before the departure date. So, check online as soon as the flights you want become available. If you miss the cheapest time, you can still find lower-priced tickets as the flight date approaches.
6
Search for flights on the go.
To get the best flight booking experience on the go, download Trip.com free app and search for cheap flight tickets from Helena to Portland to get exclusive deals for you.

Helena to Portland Flight Information

Cheapest nonstop flight price$170
Off-season for travelJanuary
Peak season for travelDecember
Flight distance825.61 km
Popular airlineAlaska Airlines