Cheap Flights from Oslo (OSL) to Sidney (SDY)

Popular airlines from Gardermoen Airport (OSL) to Sidney, MT (SDY-Sidney-Richland Municipal)

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Frequently asked questions

How much does a flight from Gardermoen Airport (OSL) to Sidney-Richland Municipal Airport (SDY) cost?
Secure a cheap one-way flight or cheap return flight from Gardermoen Airport (OSL) to Sidney-Richland Municipal Airport (SDY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Gardermoen Airport (OSL) to Sidney-Richland Municipal Airport (SDY)?
The cheapest month to fly from OSL to SDY is , when there's less demand. Off-peak months are often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Gardermoen Airport (OSL) to Sidney-Richland Municipal Airport (SDY)?
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 OSL to SDY flight.
How many flights per day from Gardermoen Airport (OSL) to Sidney-Richland Municipal Airport (SDY)?
Nonstop flights from Gardermoen Airport (OSL) to Sidney-Richland Municipal Airport (SDY) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's 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 SDY?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can change based on various factors, such as the time of year and carrier.*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 Sidney-Richland Municipal Airport (SDY)?
To avoid potential delays on the Gardermoen Airport (OSL) to Sidney-Richland Municipal Airport (SDY) route, travel before 3 PM. Later flights are 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 Sidney-Richland Municipal Airport (SDY) last-minute?
Last-minute bookings from OSL to SDY are typically more expensive. To lock in the best rates, start looking for flights as soon as possible. That said, if you're flexible with your travel plans, it's possible to land a cheap fare right before you leave.
Is it cheaper to book an OSL to SDY flight and hotel package?
Opting for an OSL to SDY flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our extensive range of accommodations and then add flights, car rentals and activities 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 Sidney-Richland Municipal Airport (SDY)?
You can usually cancel or reschedule your OSL to SDY flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Travel information

Origin airport
Gardermoen
Destination airport
Sidney-Richland Municipal
Distance
4149 mi

Book with confidence

Book with confidence

Oslo to Sidney Flights

The cheapest times to fly from Oslo to Sidney

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

 

The best time to book a flight from Oslo to Sidney

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

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 Sidney in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Sidney 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 Sidney 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.

 

Oslo to Sidney Flights

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