$50 Cheap Flights from Billings (BIL) to Sidney (SDY)

View $50 flight on Wed, May 14, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Billings to Sidney (BIL-SDY)

Prices were available within the past 7 days and start at $50 for one-way flights and $92 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cape Air
Tue, May 20 - Wed, May 28
BIL
Billings
SDY
Sidney
$92 Roundtrip, found 2 days ago
$92
Roundtrip
found 2 days ago
Select Cape Air flight, departing Tue, May 20 from Billings to Sidney, returning Wed, May 28, priced at $92 found 2 days ago
Cape Air
Thu, May 29 - Wed, Jun 4
BIL
Billings
SDY
Sidney
$100 Roundtrip, found 8 hours ago
$100
Roundtrip
found 8 hours ago
Select Cape Air flight, departing Thu, May 29 from Billings to Sidney, returning Wed, Jun 4, priced at $100 found 8 hours ago
Cape Air
Thu, May 8 - Thu, May 15
BIL
Billings
SDY
Sidney
$110 Roundtrip, found 1 day ago
$110
Roundtrip
found 1 day ago
Select Cape Air flight, departing Thu, May 8 from Billings to Sidney, returning Thu, May 15, priced at $110 found 1 day ago
Cape Air
Mon, Apr 28 - Fri, May 2
BIL
Billings
SDY
Sidney
$120 Roundtrip, found 2 days ago
$120
Roundtrip
found 2 days ago
Select Cape Air flight, departing Mon, Apr 28 from Billings to Sidney, returning Fri, May 2, priced at $120 found 2 days ago
Cape Air
Mon, Apr 28 - Fri, May 2
BIL
Billings
SDY
Sidney
$130 Roundtrip, found 2 days ago
$130
Roundtrip
found 2 days ago
Select Cape Air flight, departing Mon, Apr 28 from Billings to Sidney, returning Fri, May 2, priced at $130 found 2 days ago
Cape Air
Mon, Apr 28 - Fri, May 2
BIL
Billings
SDY
Sidney
$140 Roundtrip, found 2 days ago
$140
Roundtrip
found 2 days ago
Select Cape Air flight, departing Mon, Apr 28 from Billings to Sidney, returning Fri, May 2, priced at $140 found 2 days ago
Flights from Billings (BIL) to Sidney (SDY)
Origin airport
Logan Intl.
Destination airport
Sidney-Richland Municipal
Airlines serving
Cape Air
Roundtrip price
$92
Distance
244 mi

Billings to Sidney Flights

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

 

The best time to book a flight from Billings to Sidney

Sunday is one of the best days to book for cheap flights from Billings 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 Billings 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 Billings to Sidney in 2025. You can also book with separate airlines for your outbound and return journeys, from $50 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 Billings 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 Billings 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.

 

Frequently asked questions

How long does it take to fly from BIL to Sidney-Richland Airport?
Cape Air has a direct flight departing from Billings Logan International Airport at 7:12AM and reaching SDY at 8:55AM — a total flight duration of 1 hour and 43 minutes. Book your preferred seat, bring a magazine to keep you entertained and the time will whiz by.
Is it cheaper to buy a plane ticket from Billings Logan International Airport to SDY last minute?
Booking your journey from BIL to SDY at the last minute could save you dollars if you’re lucky to find a real bargain. However, fares generally don’t get cheaper closer to the departure date. If you hold off, flights could also be booked solid or the best seats long gone. If you’d rather not hedge your bets, book well in advance of when you want to leave. In fact, you can find some of the biggest deals up to 12 months in advance. If your preferred carrier hasn’t released tickets yet, check back regularly as deals are constantly updated on Expedia.
What airports do you fly into for Sidney from Billings?
With Sidney-Richland Municipal Airport (SDY), Dawson Community Airport (GDV) and Basin Intl. Airport (XWA) to select from, making your way from Billings to Sidney is simple. The city’s key hub, Sidney-Richland Municipal Airport (SDY), is around 1 mi west of the center. Apart from ticket costs, consider things like the ease of getting from the airport and the distance to your hotel when choosing where to fly into. Get your Sidney adventure off to an exciting start by visiting Sidney Country Club and MonDak Heritage Center.
What are the most popular departure times for flights from Logan Intl. Airport (BIL) to SDY?
Between 7:00 AM - 8:00 AM is when you’ll find many Cape Air flights making their way from BIL to Sidney-Richland Municipal Airport (SDY). Our tip? Choose a flight that departs sometime in the morning. With air traffic yet to build up around airports, your odds of traveling on a delay-free flight are higher.
Can I change the date of my flight from Billings Logan International Airport to Sidney-Richland Municipal Airport (SDY)?
You can quickly make changes to your Billings Logan International Airport to SDY flight by logging in to the Expedia Trips portal. But before you begin, read the fare conditions in your itinerary to see what the carrier will let you do and if fees apply. Some airlines have a change fee per person, on top of any difference in prices. However, if you booked in the last 24 hours, you may be able to cancel for free and book new flights. You can also head to our Customer Service portal for more info and to connect with our Virtual Agent.

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*Available to One Key members.