$472 Cheap Flights from Boise (BOI) to Oslo (OSL)

View $472 flight on Wed, Sep 10, 2025Opens in a new window

Popular airlines from Boise Airport (BOI) to Gardermoen Airport (OSL)

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Cheap Flights from Boise to Oslo (BOI-OSL)

Prices were available within the past 7 days and start at $472 for one-way flights and $625 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Aug 31 - Tue, Sep 16
BOI
Boise
OSL
Oslo
$625 Roundtrip, found 5 days ago
$625
Roundtrip
found 5 days ago
Select United flight, departing Sun, Aug 31 from Boise to Oslo, returning Tue, Sep 16, priced at $625 found 5 days ago
American Airlines
Wed, Apr 1 - Wed, Apr 15
BOI
Boise
OSL
Oslo
$626 Roundtrip, found 1 day ago
$626
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, Apr 1 from Boise to Oslo, returning Wed, Apr 15, priced at $626 found 1 day ago
American Airlines
Wed, Feb 18 - Wed, Feb 25
BOI
Boise
OSL
Oslo
$629 Roundtrip, found 18 hours ago
$629
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Wed, Feb 18 from Boise to Oslo, returning Wed, Feb 25, priced at $629 found 18 hours ago
United
Wed, Oct 1 - Wed, Oct 8
BOI
Boise
OSL
Oslo
$630 Roundtrip, found 4 days ago
$630
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 1 from Boise to Oslo, returning Wed, Oct 8, priced at $630 found 4 days ago
United
Wed, May 6 - Wed, May 13
BOI
Boise
OSL
Oslo
$631 Roundtrip, found 1 day ago
$631
Roundtrip
found 1 day ago
Select United flight, departing Wed, May 6 from Boise to Oslo, returning Wed, May 13, priced at $631 found 1 day ago
Scandinavian Airlines
Mon, Aug 25 - Wed, Sep 10
BOI
Boise
OSL
Oslo
$632 Roundtrip, found 5 days ago
$632
Roundtrip
found 5 days ago
Select Scandinavian Airlines flight, departing Mon, Aug 25 from Boise to Oslo, returning Wed, Sep 10, priced at $632 found 5 days ago
Scandinavian Airlines
Tue, Nov 25 - Wed, Dec 3
BOI
Boise
OSL
Oslo
$633 Roundtrip, found 18 hours ago
$633
Roundtrip
found 18 hours ago
Select Scandinavian Airlines flight, departing Tue, Nov 25 from Boise to Oslo, returning Wed, Dec 3, priced at $633 found 18 hours ago
United
Wed, Apr 1 - Wed, Apr 15
BOI
Boise
OSL
Oslo
$636 Roundtrip, found 1 day ago
$636
Roundtrip
found 1 day ago
Select United flight, departing Wed, Apr 1 from Boise to Oslo, returning Wed, Apr 15, priced at $636 found 1 day ago
Delta
Wed, Apr 1 - Wed, Apr 15
BOI
Boise
OSL
Oslo
$640 Roundtrip, found 1 day ago
$640
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Apr 1 from Boise to Oslo, returning Wed, Apr 15, priced at $640 found 1 day ago
Lufthansa
Wed, Feb 18 - Wed, Feb 25
BOI
Boise
OSL
Oslo
$649 Roundtrip, found 18 hours ago
$649
Roundtrip
found 18 hours ago
Select Lufthansa flight, departing Wed, Feb 18 from Boise to Oslo, returning Wed, Feb 25, priced at $649 found 18 hours ago
Flights from Boise (BOI) to Oslo (OSL)
Origin airport
Boise
Destination airport
Gardermoen
Airlines serving
Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, United, Virgin Atlantic
Roundtrip price
$625
Distance
4676 mi

Boise to Oslo Flights

The cheapest times to fly from Boise 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 Boise to Oslo are during the month of August. You can find some of the cheapest flights from Boise to Oslo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to Oslo

Sunday is one of the best days to book for cheap flights from Boise 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 Boise 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 Boise to Oslo in 2025. You can also book with separate airlines for your outbound and return journeys, from $472 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 Boise 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 Boise 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 Boise Airport (BOI) to Gardermoen Airport (OSL) cost?
Discover the latest flight deals from BOI to OSL 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 BOI to OSL?
The cheapest flights from BOI to OSL 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 BOI to OSL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BOI to OSL. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Boise Airport (BOI) to Gardermoen Airport (OSL)?
You'll need to book a flight with a layover if you're traveling from Boise Airport (BOI) to Gardermoen Airport (OSL). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from BOI to OSL?
Usually you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the airline, season 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 Boise Airport (BOI) to Gardermoen Airport (OSL)?
To avoid potential delays on the Boise Airport (BOI) to Gardermoen Airport (OSL) route, aim to travel before 3 PM. Flights after this time have a 22% higher chance of cancellation.**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 Boise Airport (BOI) to Gardermoen Airport (OSL) last-minute?
Booking your flight from BOI to OSL right before your journey is typically more expensive. However, if you're flexible with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book a BOI to OSL flight and hotel package?
Opting for a BOI to OSL flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Select from our extensive range of accommodations and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Gardermoen Airport (OSL)?
Typically, you can reschedule or cancel your BOI to OSL flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further details, go to our Customer Service portal.

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*Available to One Key members.