$105 Cheap Flights from Bismarck (BIS) to Portland (PDX)

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Find available prices by choosing your travel dates.

Cheap Flights from Bismarck to Portland (BIS-PDX)

Prices were available within the past 7 days and start at $105 for one-way flights and $235 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Delta
Delta
United
United
Delta
Delta
Delta
United
American Airlines
Flights from Bismarck (BIS) to Portland (PDX)
Origin airport
Bismarck Municipal
Destination airport
Portland Intl.
Airlines serving
American Airlines, Delta, United
Roundtrip price
$235
Distance
1044 mi

Bismarck to Portland Flights

The cheapest times to fly from Bismarck to Portland

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

The best time to book a flight from Bismarck to Portland

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

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 Bismarck to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $105 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 Bismarck to Portland 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 Bismarck to Portland 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

Is it cheaper to buy a plane ticket from BIS to Portland Airport last minute?
When it’s time to book your flights, being organized pays off. While it may be possible to pick up a deal on a BIS to PDX Airport flight at the last minute, fares usually don’t get cheaper as the departure date nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to lock in a domestic flight is between 28 – 35 days ahead. For international trips it’s three to four months.
What airports do you fly into for Portland from Bismarck?
Portland Intl. Airport (PDX), Salem, OR (SLE-McNary Field) and Portland - Troutdale Airport (TTD) are your options when connecting from Bismarck to Portland. Roughly 7 mi northeast of central Portland, Portland Intl. Airport (PDX) is the city’s principal hub. Take into account factors like flight arrival and departure times and the distance to your hotel before choosing an airport. Oregon Zoo and Portland State University are a couple of awesome attractions to put on your must-see list when you reach your destination.
Can I change the date of my flight from Bismarck Municipal Airport to Portland Airport?
Sometimes life gets in the way of plans, so Expedia is here to help make things as easy as possible. First, access your Bismarck Municipal Airport to Portland Airport itinerary through the Expedia Trips portal and check the fare conditions about what sorts of changes are allowed. If you booked in the last 24 hours, some carriers will let you cancel without charge and book new flights. If you booked your fare more than 24 hours ago, get in touch with us through our Customer Service portal to find out what your options are.

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