PDX - BIS

$309 Find Cheap Flights from Portland to Bismarck - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Bismarck departing on 8/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$315
Typical prices: $460-$547
Delta
Mon 8/17Mon 8/24
PDX - BIS • 1 stop
Cheapest one-way
$309
United Airlines
Fri 8/21
PDX - BIS • 1 stop
Top airlines
Cheapest • from $325 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Portland and Bismarck. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $538 (round-trip)
Shortest trip • 5h 55m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Bismarck!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Bismarck (PDX-BIS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Bismarck that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Bismarck

Mon, Aug 17 - Mon, Aug 24
Delta Logo
12:35 am - 10:30 am
PDX
-
BIS
7h 55m
1 stop
Delta Logo
1:27 pm - 8:17 pm
BIS
-
PDX
8h 50m
1 stop
$315Delta
Tue, Sep 22 - Sun, Sep 27
Delta Logo
12:25 am - 10:32 am
PDX
-
BIS
8h 07m
1 stop
Delta Logo
3:10 pm - 8:16 pm
BIS
-
PDX
7h 06m
1 stop
$325Delta
Wed, Aug 19 - Thu, Aug 27
Delta Logo
12:35 am - 10:30 am
PDX
-
BIS
7h 55m
1 stop
Delta Logo
5:36 pm - 11:20 pm
BIS
-
PDX
7h 44m
1 stop
$329Delta
Wed, Aug 19 - Tue, Aug 25
Delta Logo
12:35 am - 10:30 am
PDX
-
BIS
7h 55m
1 stop
Delta Logo
5:00 am - 10:41 am
BIS
-
PDX
7h 41m
1 stop
$335Delta
Fri, Aug 21 - Fri, Aug 28
Delta Logo
3:00 pm - 11:12 pm
PDX
-
BIS
6h 12m
1 stop
Delta Logo
1:27 pm - 8:17 pm
BIS
-
PDX
8h 50m
1 stop
$339Delta
Fri, Aug 21 - Fri, Aug 28
United Airlines Logo
9:00 am - 11:38 pm
PDX
-
BIS
12h 38m
2 stops
United Airlines Logo
6:35 pm - 10:54 pm
BIS
-
PDX
6h 19m
1 stop
$395United Airlines
Mon, Aug 17 - Mon, Aug 24
Delta Logo
12:35 am - 10:30 am
PDX
-
BIS
7h 55m
1 stop
Delta Logo
5:00 am - 11:45 am
BIS
-
PDX
8h 45m
2 stops
$433Delta
Fri, Aug 21 - Fri, Aug 28
United Airlines Logo
1:03 pm - 11:38 pm
PDX
-
BIS
8h 35m
2 stops
United Airlines Logo
1:40 pm - 10:45 pm
BIS
-
PDX
11h 05m
2 stops
$435United Airlines
Wed, Aug 19 - Tue, Aug 25
Delta Logo
12:35 am - 10:30 am
PDX
-
BIS
7h 55m
1 stop
Delta Logo
5:00 am - 11:45 am
BIS
-
PDX
8h 45m
2 stops
$448Delta
Thu, Aug 27 - Fri, Sep 4
Delta Logo
8:24 pm - 10:30 am
PDX
-
BIS
12h 06m
2 stops
Delta Logo
5:36 pm - 11:20 pm
BIS
-
PDX
7h 44m
1 stop
$452Delta
Booking Insights

KAYAK's insights & trends for Portland to Bismarck flights

Get data-powered insights and trends into flights from Portland to Bismarck to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Portland to Bismarck?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland to Bismarck departing in August.

Flight prices are below average for this route right now.

Flights to Bismarck from Portland usually cost between $428 and $558 in August.
The lowest price found in the past 5 days was $315 on Delta (Aug 17-Aug 24).

What is the cheapest month to fly from Portland to Bismarck?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Bismarck, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Bismarck is September, where tickets cost $0 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $802 and $764 respectively.

Good to know

Low season

February

Cheapest flight

$309
Best time to beat the crowds with an average 51% drop in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Portland to Bismarck

When to book flights from Portland to Bismarck

Are your dates flexible? Find out the best times to travel from Portland to Bismarck based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Bismarck

  • What is the cheapest flight from Portland to Bismarck?

    In the last 5 days, the lowest price for a flight from Portland to Bismarck was $309 for a one-way ticket and $325 for a round-trip.

  • Do I need a passport to fly between Portland and Bismarck?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Portland to Bismarck?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Bismarck?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Portland and Bismarck, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Portland to Bismarck, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Portland to Bismarck are Delta and United Airlines. With an average price for the route of $569 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $547 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Portland to Bismarck?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Bismarck.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Bismarck?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bismarck from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Bismarck?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bismarck with an airline and back to Portland with another airline. Booking your flights between Portland and BIS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Bismarck?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bismarck from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Portland to Bismarck

 
See real verified KAYAK customer reviews for airlines flying from Portland to Bismarck. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Bismarck? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8482 reviews
8.1Boarding
7.2Food
7.8Entertainment
8.5Crew
7.8Comfort
Airline reviews

First The flight got delayed because one of the crew members was late and we couldn’t board until she arrived. Then we all boarded and got held in the tarmac for another 30 min.

4.0 OkayJose, Jul 2026
LAX - LAS
Read more Delta reviews

First The flight got delayed because one of the crew members was late and we couldn’t board until she arrived. Then we all boarded and got held in the tarmac for another 30 min.

We got stuck on the tarmac taxiing after landing early so we didn’t get off the plane until an hour later than we thought we would

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

Second flight in a row where the entertainment system is broken. 5 hour long flight with no entertainment and flight attendants did not seem interested in resolving the matter. Very shocked to be treated this poorly considering I paid for a first class experience and have Diamond Medallion status.

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

My seat had no padding, it was literally plywood with a plastic cover. I could not change seats on my 10 hour flight. My excitement for this trip helped me deal with the pain.

The flight was great. The crew were a little terse about the size of my bag. It fit fine.

The flights were on time- Great service Would have liked more options for food choices.

The brakes on the A220 are sensitive and uncomfortably grabby

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

This was a very average flight. The seat was out of alignment so more uncomfortable than usual. The cabin felt not well maintained. But I safely got where I needed to go.

We had a 90 minute delay due to equipment failure that was detected just before we took off. United rebooked my connecting flight.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

Flight cancelled because of the grounded 737s. United was good about it and got us onto a later Alaska Airlines flight to Oakland (not San Francisco as originally intended). Had to go through security again and my wife dropped her MacBook Pro, which broke, a $2,500 whoopsie. But we made it home.

I liked being upgraded to first class. The flight was a redeye, so I did sleep most of it.

Everything you need to know for your flight from Portland to Bismarck

Information on your arrival and departure airports