$219 Cheap Flights from Portland (PDX) to Butte (BTM)

View $219 flight on Fri, Oct 31, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Butte, MT (BTM-Bert Mooney)

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Cheap Flights from Portland to Butte (PDX-BTM)

Prices were available within the past 7 days and start at $219 for one-way flights and $302 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Oct 14 - Tue, Oct 21
PDX
Portland
BTM
Butte
$302 Roundtrip, found 2 days ago
$302
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 14 from Portland to Butte, returning Tue, Oct 21, priced at $302 found 2 days ago
Delta
Tue, Oct 14 - Sat, Oct 18
PDX
Portland
BTM
Butte
$312 Roundtrip, found 2 days ago
$312
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 14 from Portland to Butte, returning Sat, Oct 18, priced at $312 found 2 days ago
Delta
Wed, Oct 15 - Tue, Oct 21
PDX
Portland
BTM
Butte
$316 Roundtrip, found 2 days ago
$316
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 15 from Portland to Butte, returning Tue, Oct 21, priced at $316 found 2 days ago
Delta
Thu, Oct 16 - Sat, Oct 18
PDX
Portland
BTM
Butte
$322 Roundtrip, found 2 days ago
$322
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Oct 16 from Portland to Butte, returning Sat, Oct 18, priced at $322 found 2 days ago
Delta
Sat, Dec 6 - Mon, Dec 22
PDX
Portland
BTM
Butte
$326 Roundtrip, found 2 days ago
$326
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Dec 6 from Portland to Butte, returning Mon, Dec 22, priced at $326 found 2 days ago
Delta
Wed, Oct 15 - Sat, Oct 18
PDX
Portland
BTM
Butte
$326 Roundtrip, found 2 days ago
$326
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 15 from Portland to Butte, returning Sat, Oct 18, priced at $326 found 2 days ago
Delta
Mon, Oct 6 - Sat, Oct 25
PDX
Portland
BTM
Butte
$332 Roundtrip, found 2 days ago
$332
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Oct 6 from Portland to Butte, returning Sat, Oct 25, priced at $332 found 2 days ago
Delta
Wed, Oct 22 - Tue, Nov 4
PDX
Portland
BTM
Butte
$336 Roundtrip, found 2 days ago
$336
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 22 from Portland to Butte, returning Tue, Nov 4, priced at $336 found 2 days ago
Delta
Sat, Oct 18 - Tue, Oct 21
PDX
Portland
BTM
Butte
$342 Roundtrip, found 2 days ago
$342
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Oct 18 from Portland to Butte, returning Tue, Oct 21, priced at $342 found 2 days ago
United
Tue, Dec 16 - Wed, Dec 24
PDX
Portland
BTM
Butte
$436 Roundtrip, found 6 days ago
$436
Roundtrip
found 6 days ago
Select United flight, departing Tue, Dec 16 from Portland to Butte, returning Wed, Dec 24, priced at $436 found 6 days ago

Find the cheapest month to fly from Portland (PDX) to Butte (BTM)

August is typically the cheapest month to fly

From $292 - $752 per traveler.

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM) cost?
Snag a cheap one-way flight from $219 or cheap return flight from $302 from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM)?
Flying in October can help you save, as it's the cheapest month for flights between PDX and BTM. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest PDX to BTM flight.
How many flights per day from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM)?
You'll need to take a flight with a layover if you're traveling from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from PDX to BTM?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM)?
Select a flight from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM) last-minute?
Last-minute fares from PDX to BTM are typically more expensive. To lock in the best prices, start searching for flights as early as possible. That said, if you're flexible with your travel plans, it's possible to land a cheap ticket right before you leave.
Is it cheaper to book a PDX to BTM flight and hotel package?
Compared with arranging flights and hotels separately, booking a PDX to BTM flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place takes the hassle out of planning your trip. Just secure your flights and choose from our extensive range of stays, then tailor your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Bert Mooney Airport (BTM)?
It's generally possible to reschedule or cancel your PDX to BTM flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Portland Intl.
Destination airport
Bert Mooney
Airlines serving
Delta, United
Roundtrip price
$302
Distance
486 mi

Book with confidence

Book with confidence

Portland to Butte Flights

The cheapest times to fly from Portland to Butte

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Butte are during the month of October. You can find some of the cheapest flights from Portland to Butte with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Butte

Sunday is one of the best days to book for cheap flights from Portland to Butte: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Butte

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Butte in 2025. You can also book with separate airlines for your outbound and return journeys, from $219 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Butte flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Butte airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to Butte Flights

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*Available to One Key members.