Cheap Flights from Bismarck (BIS) to Sidney (SDY)

Popular airlines from Bismarck, ND (BIS-Bismarck Municipal) to Sidney, MT (SDY-Sidney-Richland Municipal)

Frequently asked questions

How much does a flight from Bismarck Municipal Airport (BIS) to Sidney-Richland Municipal Airport (SDY) cost?
Secure a cheap one-way flight or cheap return flight from Bismarck Municipal Airport (BIS) to Sidney-Richland Municipal Airport (SDY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Bismarck Municipal Airport (BIS) to Sidney-Richland Municipal Airport (SDY)?
The cheapest month to fly from BIS to SDY is , when demand is low. Off-peak season is typically when better flight deals are available between these airports.
What is the cheapest airline that flies from Bismarck Municipal Airport (BIS) to Sidney-Richland Municipal Airport (SDY)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from BIS to SDY. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Bismarck Municipal Airport (BIS) to Sidney-Richland Municipal Airport (SDY)?
There are no daily nonstop flights departing from Bismarck Municipal Airport (BIS) to Sidney-Richland Municipal Airport (SDY). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from BIS to SDY?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Bismarck Municipal Airport (BIS) to Sidney-Richland Municipal Airport (SDY)?
To reach Sidney-Richland Municipal Airport (SDY) without delays, pick a flight that takes off from Bismarck Municipal Airport (BIS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Bismarck Municipal Airport (BIS) to Sidney-Richland Municipal Airport (SDY) last-minute?
Holding off until just before your departure to book a ticket from BIS to SDY often results in higher prices. While you may find some last-minute discounts, there's no guarantee. Keep your travel plans flexible to maximize your chances of snagging a bargain.
Is it cheaper to book a BIS to SDY flight and hotel package?
You'll generally save money by booking a BIS to SDY flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After choosing your preferred flights and accommodations, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Bismarck Municipal Airport (BIS) to Sidney-Richland Municipal Airport (SDY)?
In most cases, you're able to reschedule or cancel your BIS to SDY flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want more details, head to our Customer Service portal.

Travel information

Origin airport
Bismarck Municipal
Destination airport
Sidney-Richland Municipal
Distance
173 mi

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Bismarck to Sidney Flights

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

 

The best time to book a flight from Bismarck to Sidney

Sunday is one of the best days to book for cheap flights from Bismarck 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 Bismarck 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 Bismarck 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 Bismarck 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 Bismarck 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.

 

Bismarck to Sidney Flights

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*Available to One Key members.