$375 Cheap Flights from Bismarck (BIS) to Oslo (OSL)

View $375 flight on Mon, Jan 19, 2026Opens in a new window

Popular airlines from Bismarck, ND (BIS-Bismarck Municipal) to Gardermoen Airport (OSL)

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Cheap Flights from Bismarck to Oslo (BIS-OSL)

Prices were available within the past 7 days and start at $375 for one-way flights and $493 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Mar 9 - Wed, Mar 25
BIS
Bismarck
OSL
Oslo
$493 Roundtrip, found 6 days ago
$493
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Mar 9 from Bismarck to Oslo, returning Wed, Mar 25, priced at $493 found 6 days ago
Delta
Tue, Apr 21 - Thu, May 7
BIS
Bismarck
OSL
Oslo
$497 Roundtrip, found 6 days ago
$497
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Apr 21 from Bismarck to Oslo, returning Thu, May 7, priced at $497 found 6 days ago
American Airlines
Wed, Feb 18 - Wed, Mar 4
BIS
Bismarck
OSL
Oslo
$504 Roundtrip, found 6 days ago
$504
Roundtrip
found 6 days ago
Select American Airlines flight, departing Wed, Feb 18 from Bismarck to Oslo, returning Wed, Mar 4, priced at $504 found 6 days ago
American Airlines
Mon, Mar 30 - Tue, Apr 28
BIS
Bismarck
OSL
Oslo
$504 Roundtrip, found 13 hours ago
$504
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Mon, Mar 30 from Bismarck to Oslo, returning Tue, Apr 28, priced at $504 found 13 hours ago
American Airlines
Mon, Jan 19 - Mon, Feb 2
BIS
Bismarck
OSL
Oslo
$505 Roundtrip, found 13 hours ago
$505
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Mon, Jan 19 from Bismarck to Oslo, returning Mon, Feb 2, priced at $505 found 13 hours ago
American Airlines
Mon, Jan 19 - Mon, Feb 2
BIS
Bismarck
OSL
Oslo
$507 Roundtrip, found 13 hours ago
$507
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Mon, Jan 19 from Bismarck to Oslo, returning Mon, Feb 2, priced at $507 found 13 hours ago
Delta
Mon, Mar 16 - Wed, Apr 1
BIS
Bismarck
OSL
Oslo
$508 Roundtrip, found 6 days ago
$508
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Mar 16 from Bismarck to Oslo, returning Wed, Apr 1, priced at $508 found 6 days ago
United
Sun, Apr 26 - Wed, May 13
BIS
Bismarck
OSL
Oslo
$522 Roundtrip, found 6 days ago
$522
Roundtrip
found 6 days ago
Select United flight, departing Sun, Apr 26 from Bismarck to Oslo, returning Wed, May 13, priced at $522 found 6 days ago
KLM
Mon, Jan 19 - Mon, Feb 2
BIS
Bismarck
OSL
Oslo
$579 Roundtrip, found 13 hours ago
$579
Roundtrip
found 13 hours ago
Select KLM flight, departing Mon, Jan 19 from Bismarck to Oslo, returning Mon, Feb 2, priced at $579 found 13 hours ago
Air France
Mon, Dec 29 - Tue, Jan 13
BIS
Bismarck
OSL
Oslo
$829 Roundtrip, found 6 days ago
$829
Roundtrip
found 6 days ago
Select Air France flight, departing Mon, Dec 29 from Bismarck to Oslo, returning Tue, Jan 13, priced at $829 found 6 days ago
Flights from Bismarck (BIS) to Oslo (OSL)
Origin airport
Bismarck Municipal
Destination airport
Gardermoen
Airlines serving
Air France, American Airlines, Delta, KLM, United
Roundtrip price
$492
Distance
4120 mi

Bismarck to Oslo Flights

The cheapest times to fly from Bismarck to Oslo

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

 

The best time to book a flight from Bismarck to Oslo

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

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 Oslo in 2026. You can also book with separate airlines for your outbound and return journeys, from $375 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 Oslo 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 Oslo 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 Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL) cost?
Get a cheap one-way flight from $375 or cheap return flight from $493 from Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL) 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 Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL)?
March is the most affordable month to fly from BIS to OSL. Planning your trip for the off-season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll fly you from BIS to OSL. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL)?
There aren't any daily direct flights available from Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time at all.
What day of the week has the most flights from BIS to OSL?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL)?
Select a flight from Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time 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 Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL) last-minute?
Booking your flight from BIS to OSL right before your journey is usually more expensive. But if you're flexible with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a BIS to OSL flight and hotel package?
Compared with arranging hotels and flights separately, booking a BIS to OSL flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place takes the hassle out of planning your trip. Simply pick your flights and select from our extensive range of hotels, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Bismarck Municipal Airport (BIS) to Gardermoen Airport (OSL)?
Usually, it's possible to cancel or reschedule your BIS to OSL flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.