$559 Cheap Flights from Oslo (OSL) to Rapid City (RAP)

View $559 flight on Wed, Sep 10, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $559 for one-way flights and $697 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Jul 30 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$697 Roundtrip, found 3 days ago
$697
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jul 30 from Oslo to Rapid City, returning Sun, Aug 3, priced at $697 found 3 days ago
United
Wed, Jul 30 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$697 Roundtrip, found 3 days ago
$697
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jul 30 from Oslo to Rapid City, returning Sun, Aug 3, priced at $697 found 3 days ago
United
Wed, Jul 30 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$731 Roundtrip, found 3 days ago
$731
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jul 30 from Oslo to Rapid City, returning Sun, Aug 3, priced at $731 found 3 days ago
United
Wed, Jul 30 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$733 Roundtrip, found 3 days ago
$733
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jul 30 from Oslo to Rapid City, returning Sun, Aug 3, priced at $733 found 3 days ago
Brussels Airlines
Wed, Jul 30 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$744 Roundtrip, found 3 days ago
$744
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Wed, Jul 30 from Oslo to Rapid City, returning Sun, Aug 3, priced at $744 found 3 days ago
American Airlines
Sun, Jul 27 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$745 Roundtrip, found 3 days ago
$745
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Jul 27 from Oslo to Rapid City, returning Sun, Aug 3, priced at $745 found 3 days ago
United
Wed, Jul 30 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$761 Roundtrip, found 3 days ago
$761
Roundtrip
found 3 days ago
Select United flight, departing Wed, Jul 30 from Oslo to Rapid City, returning Sun, Aug 3, priced at $761 found 3 days ago
Swiss International Air Lines
Wed, Jul 30 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$770 Roundtrip, found 3 days ago
$770
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Wed, Jul 30 from Oslo to Rapid City, returning Sun, Aug 3, priced at $770 found 3 days ago
Brussels Airlines
Wed, Jul 30 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$778 Roundtrip, found 3 days ago
$778
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Wed, Jul 30 from Oslo to Rapid City, returning Sun, Aug 3, priced at $778 found 3 days ago
British Airways
Wed, Jul 30 - Sun, Aug 3
OSL
Oslo
RAP
Rapid City
$809 Roundtrip, found 3 days ago
$809
Roundtrip
found 3 days ago
Select British Airways flight, departing Wed, Jul 30 from Oslo to Rapid City, returning Sun, Aug 3, priced at $809 found 3 days ago
Flights from Oslo (OSL) to Rapid City (RAP)
Origin airport
Gardermoen
Destination airport
Rapid City Regional
Roundtrip price
$696
Distance
4339 mi

Oslo to Rapid City Flights

The cheapest times to fly from Oslo to Rapid City

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

 

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

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

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 Oslo to Rapid City in 2025. You can also book with separate airlines for your outbound and return journeys, from $559 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 Oslo to Rapid City 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 Oslo to Rapid City 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 Gardermoen Airport (OSL) to Rapid City Regional Airport (RAP) cost?
Discover the latest flight deals from OSL to RAP 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 OSL to RAP?
The cheapest flights from OSL to RAP 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 OSL to RAP?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from OSL to RAP. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Gardermoen Airport (OSL) to Rapid City Regional Airport (RAP)?
Direct flights from Gardermoen Airport (OSL) to Rapid City Regional Airport (RAP) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from OSL to RAP?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Gardermoen Airport (OSL) to Rapid City Regional Airport (RAP)?
Select a flight from Gardermoen Airport (OSL) to Rapid City Regional Airport (RAP) that takes off before 3 PM to reduce the risk of cancellations and delays. Departures later than this 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 Gardermoen Airport (OSL) to Rapid City Regional Airport (RAP) last-minute?
Booking your flight from OSL to RAP just before your trip is typically more expensive. But if you're flexible with your schedule, you could score a cheap last-minute fare.
Is it cheaper to book an OSL to RAP flight and hotel package?
Securing an OSL to RAP flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Pick from our impressive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Gardermoen Airport (OSL) to Rapid City Regional Airport (RAP)?
If you reserved your OSL to RAP flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

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*Available to One Key members.