Cheap Flights from Cheyenne (CYS) to Sidney (SDY)

Popular airlines from Cheyenne, WY (CYS-Cheyenne Regional) to Sidney, MT (SDY-Sidney-Richland Municipal)

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Frequently asked questions

How much does a flight from Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY) cost?
Grab a cheap one-way flight or cheap return flight from Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY)?
Planning your getaway for is a great way to save, as it's the cheapest month for flights between CYS and SDY. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from CYS to SDY. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY)?
There are no daily direct flights available from Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY). 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.
What day of the week has the most flights from CYS to SDY?
You'll generally find Tuesday the quietest day for flights, while Fridays are often 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 Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY)?
Select a flight from Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY) that takes off before 3 PM to reduce the likelihood of delays. Later departures have a 22% higher chance of being canceled, on average.**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 Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY) last-minute?
Booking your flight from CYS to SDY right before your getaway is usually more expensive. However, if there's some wiggle room with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a CYS to SDY flight and hotel package?
Compared with arranging hotels and flights separately, booking a CYS to SDY flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one place will take the stress out of planning your trip. Just secure your flights and select from our extensive range of stays, then tailor your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Cheyenne Regional Airport (CYS) to Sidney-Richland Municipal Airport (SDY)?
It's usually possible to cancel or reschedule your CYS to SDY flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to 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

Origin airport
Cheyenne Regional
Destination airport
Sidney-Richland Municipal
Distance
454 mi

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Cheyenne to Sidney Flights

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

 

The best time to book a flight from Cheyenne to Sidney

Sunday is one of the best days to book for cheap flights from Cheyenne 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 Cheyenne 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 Cheyenne to Sidney in 2026. 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 Cheyenne 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 Cheyenne 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.

 

Cheyenne to Sidney Flights

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*Available to One Key members.