$136 Cheap Flights from Portland (PDX) to Bismarck (BIS)

View $136 flight on Wed, Oct 22, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Bismarck, ND (BIS-Bismarck Municipal)

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Cheap Flights from Portland to Bismarck (PDX-BIS)

Prices were available within the past 7 days and start at $136 for one-way flights and $259 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Sep 25 - Sat, Sep 27
PDX
Portland
BIS
Bismarck
$259 Roundtrip, found 8 hours ago
$259
Roundtrip
found 8 hours ago
Select Delta flight, departing Thu, Sep 25 from Portland to Bismarck, returning Sat, Sep 27, priced at $259 found 8 hours ago
American Airlines
Tue, Sep 9 - Sat, Sep 13
PDX
Portland
BIS
Bismarck
$264 Roundtrip, found 11 hours ago
$264
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Tue, Sep 9 from Portland to Bismarck, returning Sat, Sep 13, priced at $264 found 11 hours ago
Delta
Wed, Sep 24 - Wed, Oct 8
PDX
Portland
BIS
Bismarck
$269 Roundtrip, found 8 hours ago
$269
Roundtrip
found 8 hours ago
Select Delta flight, departing Wed, Sep 24 from Portland to Bismarck, returning Wed, Oct 8, priced at $269 found 8 hours ago
Delta
Mon, Nov 10 - Sun, Nov 23
PDX
Portland
BIS
Bismarck
$274 Roundtrip, found 1 day ago
$274
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Nov 10 from Portland to Bismarck, returning Sun, Nov 23, priced at $274 found 1 day ago
Delta
Mon, Nov 10 - Mon, Nov 24
PDX
Portland
BIS
Bismarck
$279 Roundtrip, found 1 day ago
$279
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Nov 10 from Portland to Bismarck, returning Mon, Nov 24, priced at $279 found 1 day ago
Delta
Wed, Oct 1 - Thu, Oct 23
PDX
Portland
BIS
Bismarck
$284 Roundtrip, found 6 days ago
$284
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Oct 1 from Portland to Bismarck, returning Thu, Oct 23, priced at $284 found 6 days ago
United
Sat, Sep 6 - Mon, Sep 8
PDX
Portland
BIS
Bismarck
$286 Roundtrip, found 2 days ago
$286
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 6 from Portland to Bismarck, returning Mon, Sep 8, priced at $286 found 2 days ago
United
Thu, Sep 4 - Mon, Sep 8
PDX
Portland
BIS
Bismarck
$288 Roundtrip, found 2 days ago
$288
Roundtrip
found 2 days ago
Select United flight, departing Thu, Sep 4 from Portland to Bismarck, returning Mon, Sep 8, priced at $288 found 2 days ago
United
Fri, Aug 15 - Sun, Aug 17
PDX
Portland
BIS
Bismarck
$289 Roundtrip, just found
$289
Roundtrip
just found
Select United flight, departing Fri, Aug 15 from Portland to Bismarck, returning Sun, Aug 17, priced at $289 just found
United
Sat, Sep 6 - Mon, Sep 8
PDX
Portland
BIS
Bismarck
$290 Roundtrip, found 2 days ago
$290
Roundtrip
found 2 days ago
Select United flight, departing Sat, Sep 6 from Portland to Bismarck, returning Mon, Sep 8, priced at $290 found 2 days ago

Find the cheapest month to fly from Portland (PDX) to Bismarck (BIS)

April is typically the cheapest month to fly

From $204 - $562 per traveler.

Graph displaying average flight prices per month

Alternative airports near Bismarck

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Bismarck Municipal BIS. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $289
BIS
Bismarck Municipal
CheapestClosest
Average driving time to city center6 min
Flights from $289
Flights from Portland (PDX) to Bismarck (BIS)
Origin airport
Portland Intl.
Destination airport
Bismarck Municipal
Airlines serving
American Airlines, Delta, United
Roundtrip price
$258
Distance
1044 mi

Portland to Bismarck Flights

The cheapest times to fly from Portland to Bismarck

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 Bismarck are during the month of September. You can find some of the cheapest flights from Portland to Bismarck with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Bismarck

Sunday is one of the best days to book for cheap flights from Portland to Bismarck: 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 Bismarck

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 Bismarck in 2025. You can also book with separate airlines for your outbound and return journeys, from $136 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 Bismarck 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 Bismarck 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.

 

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Bismarck Municipal Airport (BIS) cost?
Discover the latest flight deals from PDX to BIS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from PDX to BIS?
The cheapest flights from PDX to BIS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from PDX to BIS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PDX to BIS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Portland Intl. Airport (PDX) to Bismarck Municipal Airport (BIS)?
Nonstop flights from Portland Intl. Airport (PDX) to Bismarck Municipal Airport (BIS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PDX to BIS?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary based on the season, carrier and other factors.*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 Bismarck Municipal Airport (BIS)?
Choose a flight from Portland Intl. Airport (PDX) to Bismarck Municipal Airport (BIS) that leaves before 3 PM to reduce the risk of cancellations. Departures after this hour are on average 22% more likely to be canceled.**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 Bismarck Municipal Airport (BIS) last-minute?
Booking your ticket from PDX to BIS just before your trip is generally more expensive. But if there's some wiggle room with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book a PDX to BIS flight and hotel package?
Opting for a PDX to BIS flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Choose from our extensive range of hotels and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Bismarck Municipal Airport (BIS)?
If you booked your PDX to BIS flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.