$494 Cheap Flights from Rapid City (RAP) to Oslo (OSL)

View $494 flight on Mon, Sep 1, 2025Opens in a new window

Popular airlines from Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL)

Cheap Flights from Rapid City to Oslo (RAP-OSL)

Prices were available within the past 7 days and start at $494 for one-way flights and $726 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$726 Roundtrip, found 11 hours ago
$726
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $726 found 11 hours ago
United
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$737 Roundtrip, found 11 hours ago
$737
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $737 found 11 hours ago
United
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$764 Roundtrip, found 11 hours ago
$764
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $764 found 11 hours ago
United
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$765 Roundtrip, found 11 hours ago
$765
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $765 found 11 hours ago
United
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$775 Roundtrip, found 11 hours ago
$775
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $775 found 11 hours ago
United
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$776 Roundtrip, found 11 hours ago
$776
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $776 found 11 hours ago
Delta
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$778 Roundtrip, found 11 hours ago
$778
Roundtrip
found 11 hours ago
Select Delta flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $778 found 11 hours ago
United
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$783 Roundtrip, found 11 hours ago
$783
Roundtrip
found 11 hours ago
Select United flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $783 found 11 hours ago
American Airlines
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$842 Roundtrip, found 11 hours ago
$842
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $842 found 11 hours ago
KLM
Mon, Sep 1 - Wed, Sep 10
RAP
Rapid City
OSL
Oslo
$861 Roundtrip, found 11 hours ago
$861
Roundtrip
found 11 hours ago
Select KLM flight, departing Mon, Sep 1 from Rapid City to Oslo, returning Wed, Sep 10, priced at $861 found 11 hours ago
Flights from Rapid City (RAP) to Oslo (OSL)
Origin airport
Rapid City Regional
Destination airport
Gardermoen
Airlines serving
American Airlines, Delta, KLM, United
Roundtrip price
$725
Distance
4339 mi

Rapid City to Oslo Flights

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

 

The best time to book a flight from Rapid City to Oslo

Sunday is one of the best days to book for cheap flights from Rapid City 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 Rapid City 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 Rapid City to Oslo in 2025. You can also book with separate airlines for your outbound and return journeys, from $494 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 Rapid City 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 Rapid City 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 Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL) cost?
Get a cheap one-way flight from $494 or cheap return flight from $726 from Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL)?
Planning your getaway for September is a great way to save, as it's the cheapest month for flights between RAP and OSL. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest RAP to OSL flight.
How many flights per day from Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL)?
There aren't any daily direct flights available from Rapid City Regional Airport (RAP) 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 RAP to OSL?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the airline, time of year 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 Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL)?
To avoid potential delays on the Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being 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 Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL) last-minute?
Last-minute fares from RAP to OSL are usually more expensive. To lock in the cheapest rates, start looking for flights well in advance. That said, if you can play around with your travel dates, you may score a cheap ticket right before your trip.
Is it cheaper to book a RAP to OSL flight and hotel package?
Compared with arranging hotels and flights separately, booking a RAP to OSL flight and hotel package with Expedia could result in significant savings. Better still, having everything in one convenient place takes the hassle out of planning your trip. Simply secure your flights and select from our extensive range of hotels, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Rapid City Regional Airport (RAP) to Gardermoen Airport (OSL)?
In most cases, you're able to cancel or reschedule your RAP to OSL flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you need more information, visit our Customer Service portal.

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*Available to One Key members.