Cheap Flights from Helena (HLN) to Portland (PDX)

Compare Helena to Portland flight deals

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Flight deals from Helena to Portland

Looking for a cheap last-minute deal or the best return flight from Helena to Portland? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Helena to Portland

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Helena to Portland flights are currently cheapest in July.

Helena to Portland: Alternative routes

Compare routes from Helena to Portland below. You may find an airport to fly into that's cheaper, faster, or easier than Portland.

Helena to Portland: Flight information

The things to know before you go.
Cheapest flight found$1,003
Cheapest month to flyJuly

Finding cheap flights from Helena to Portland: Frequently asked questions

The best price we found for a return flight from Helena to Portland is $1,003. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Helena to Portland. But we found flights with one or more stops from $1,003.
As of July 2025, there are no flights flying from Helena to Portland.
The cheapest month to fly from Helena to Portland is usually July.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Helena Airport to Portland Airport on Saturday, 19 July 2025.
No airlines currently offer direct flights between Helena Airport and Portland Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Portland but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Portland is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Delta offers the cheapest flight tickets to Portland.

Travelling from Helena Regional Airport (HLN) to Portland International Airport (PDX): what you need to know

  • The timezone in Portland is UTC-7, which is one hour behind Helena.

  • Give yourself enough time to catch your HLN to PDX flight. It's generally best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Flying during a peak time such as July? School holidays and other high seasons can result in longer lines at airport checkpoints. Play it safe and arrive up to four hours ahead of international flights and two hours before domestic departures.

  • Choose a stopover if you prefer to break up your flight. Just uncheck 'Direct flights only' to look at your options for tickets from Helena Regional Airport to Portland International Airport. Salt Lake City International Airport is a top stopover on the HLN to PDX route.

How to find the cheapest flights from Helena Regional Airport (HLN) to Portland International Airport (PDX)

  • At the moment, $335 is the lowest price we've found for a one-way Helena Regional Airport to Portland International Airport flight. The best price for a return plane ticket is $1,003. Remember that fares could change due to demand when booking.

  • To find cheap tickets from HLN to PDX, book as early as you can. Airlines tend to offer their best fares when flights are first released.

  • Getting cheap flights from Helena Regional Airport to Portland International Airport is more likely if you're flexible with your travel dates. Use the 'Whole month' function to see the lowest prices across the month and snap up a great deal.

  • Getting your hands on cheap flights from HLN to PDX is a cinch with Price Alerts. Simply create one of these automatic alerts and we'll let you know as soon as a lower fare pops up.

  • Select your ideal departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Helena Regional Airport to Portland International Airport.

Handy information about Helena Regional Airport (HLN)

  • HLN is located at 2850 Mercer Loop.

  • 85.76% of flights leaving Helena Regional Airport land at their destination on time. With its strong on-time performance, delays are unlikely when flying out of HLN.

  • Central Helena to Helena Regional Airport is approximately 6 kilometres. Depending on traffic, it'll take you about 15 minutes to get there if you're driving, ride-sharing or catching a cab.

  • You can expect a trip time of roughly 1 hour 50 minutes on public transport.

  • Searching for a convenient hotel close to HLN? If you're boarding an early flight from Helena Regional Airport to Portland International Airport, these stays will have you moments from your departure gate:

Arriving at Portland International Airport (PDX)

Getting from Portland International Airport (PDX) to central Portland

  • The street address for PDX is 7000 NE Airport Way.

  • From Portland International Airport, Portland is approximately 19 kilometres away. It takes around 20 minutes to reach the centre driving.

  • Getting to the centre by public transport will take you roughly 45 minutes.

When to fly to Portland International Airport (PDX)

  • It's time to work out your trip dates for your flight from Helena Regional Airport to Portland International Airport. July is the most popular month to visit Portland. If you want a more laid-back vibe, go in May.

  • When booking your flight from Helena Regional Airport to Portland International Airport, consider the kind of weather you like. August is the warmest month in Portland, with temperatures ranging from 12ºC (54ºF) to 31ºC (88ºF).

  • If you'd rather travel in cooler conditions, search for a cheap ticket from HLN to PDX in December. Average temperatures are between 0ºC (32ºF) and 9ºC (48ºF) then.

Explore more of United States

  • You've seen Portland, now it's time to discover other parts of United States. Journey about 241 kilometres north to Seattle to tick off its top attractions. From Greyhound: Bus Station to LMN Architects and Boeing Radiation Effects Lab, there's plenty to keep you on the go.

  • If you're ready to explore another great destination in United States, head for Spokane, roughly 467 kilometres north-east of Portland. Manito Park, Northwest Museum of Arts & Culture and Spokane Falls are the start of reasons to visit.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.