$268 Cheap Flights from Sidney (SDY) to Raleigh (RDU)

View $268 flight on Wed, Dec 10, 2025Opens in a new window

Popular airlines from Sidney, MT (SDY-Sidney-Richland Municipal) to Raleigh-Durham International Airport (RDU)

Cheap Flights from Sidney to Raleigh (SDY-RDU)

Prices were available within the past 7 days and start at $268 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Sidney (SDY) to Raleigh (RDU)
Origin airport
Sidney-Richland Municipal
Destination airport
Raleigh - Durham Intl.
Distance
1531 mi

Sidney to Raleigh Flights

The cheapest times to fly from Sidney to Raleigh

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

 

The best time to book a flight from Sidney to Raleigh

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

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 Sidney to Raleigh in 2025. You can also book with separate airlines for your outbound and return journeys, from $268 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 Sidney to Raleigh 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 Sidney to Raleigh 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 Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU) cost?
Secure a cheap one-way flight from $268 or cheap return flight from Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU) 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 Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU)?
Planning your trip for may help you find better deals, as it's the cheapest month for flights between SDY and RDU. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SDY to RDU. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU)?
You'll need to take a flight with a layover if you're traveling from Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from SDY to RDU?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on various factors, such as 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 Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU)?
To avoid possible delays on the Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU) route, aim to travel before 3 PM. Departures after this hour 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 Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU) last-minute?
Last-minute bookings from SDY to RDU are typically more expensive. To lock in the best rates, start looking for flights as early as possible. That said, if you're flexible with your travel dates, it's possible to score a cheap ticket just before your departure.
Is it cheaper to book a SDY to RDU flight and hotel package?
Compared with arranging hotels and flights separately, booking a SDY to RDU flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place takes the hassle out of planning your trip. Just secure your flights and choose from our extensive range of stays, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Sidney-Richland Municipal Airport (SDY) to Raleigh - Durham Intl. Airport (RDU)?
You can usually cancel or reschedule your SDY to RDU flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible 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.