Cheap flights from Portland to Helena from $356
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Helena departing on 9/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Portland to Helena
Cheap round-trip flights
Hawaiian Airlines flights from Portland to Helena
Our best Hawaiian Airlines deals on Portland to Helena flight tickets
Delta flights from Portland to Helena
Our best Delta deals on Portland to Helena flight tickets
See travel insights to Helena from
How to get the cheapest flight ticket from Portland to Helena
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Helena?
If you aren’t able to travel to Helena during the month of January, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $288.
What is the cheapest day to depart on your flight to Helena?
The cheapest day to depart from Portland to Helena is on a Saturday. Travelers who choose to depart for Helena on a Saturday will often find tickets for as low as $321. The most expensive day to fly to Helena is Monday, with ticket prices averaging around $611.
When to book flights from Portland to Helena
Cheap Portland to Helena (PDX to HLN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland to Helena
How far is Portland to Helena by plane?
Helena is 514.7 mi away from Portland. A reasonable flight in good conditions will take 4h 17m.
When did momondo last update prices for flights from Portland Airport to Helena Airport?
Prices for flights from Portland Airport to Helena Airport refresh daily.
How many operators does momondo search for flights from Portland Airport to Helena Airport?
The number of operators available for flights from Portland Airport to Helena Airport is 2 as of March 2025.
How old do you have to be to fly from Portland Airport to Helena Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The required travel and health documents for your Helena Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Helena Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Portland to Helena?
momondo data reveals that the most frequently booked airline on the route from Portland to Helena is Alaska Airlines, representing 67% of all bookings. The subsequent popular airline is Delta at 33%.
Best airlines flying from Portland to Helena
Compare and see reviews for airlines that fly from Portland to Helena with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $278 | Free Cancellation | Rating 8.0 7,899 reviews | |||
| PriceFrom $287 | Free Cancellation | Rating 8.0 9,811 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Portland to Helena?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Helena from Portland.
Can I find flights from Portland to Helena with flexible booking policies on momondo?
Flights from Portland to Helena with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Portland to Helena?
momondo helps you find the best flight between Portland and Helena by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Portland to Helena right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Helena from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.