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

View $50 flight on Fri, Nov 14, 2025Opens in a new window

Popular airlines from Billings Logan Intl. Airport (BIL) to Sidney, MT (SDY-Sidney-Richland Municipal)

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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 $110 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cape Air
Thu, Nov 13 - Mon, Nov 17
BIL
Billings
SDY
Sidney
$110 Roundtrip, found 1 day ago
$110
Roundtrip
found 1 day ago
Select Cape Air flight, departing Thu, Nov 13 from Billings to Sidney, returning Mon, Nov 17, priced at $110 found 1 day ago
Cape Air
Mon, Nov 3 - Wed, Nov 5
BIL
Billings
SDY
Sidney
$120 Roundtrip, found 1 day ago
$120
Roundtrip
found 1 day ago
Select Cape Air flight, departing Mon, Nov 3 from Billings to Sidney, returning Wed, Nov 5, priced at $120 found 1 day ago
Cape Air
Mon, Nov 3 - Wed, Nov 5
BIL
Billings
SDY
Sidney
$130 Roundtrip, found 1 day ago
$130
Roundtrip
found 1 day ago
Select Cape Air flight, departing Mon, Nov 3 from Billings to Sidney, returning Wed, Nov 5, priced at $130 found 1 day ago

Alternative airports near Sidney

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Sidney-Richland Municipal SDY. Cheapest and Closest option available. Average driving time to city center is 3 minutes. Flights from $100
SDY
Sidney-Richland Municipal
CheapestClosest
Average driving time to city center3 min
Flights from $100
Flights from Billings (BIL) to Sidney (SDY)
Origin airport
Logan Intl.
Destination airport
Sidney-Richland Municipal
Airlines serving
Cape Air
Roundtrip price
$94
Distance
244 mi
Average flight time
1 hour 42 mins

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 November. 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 much does a flight from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY) cost?
Lock in a cheap one-way flight from $50 or cheap return flight from $110 from Logan Intl. Airport (BIL) 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 Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY)?
Traveling in November may help you find better deals, as it's the cheapest month for flights between BIL and SDY. You'll typically find the lowest fares during off-peak months.
Which airlines fly direct from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY)?
If you're departing from Logan Intl. Airport (BIL), you can jump on a direct flight to Sidney-Richland Municipal Airport (SDY) with Cape Air.
What is the cheapest airline that flies from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest BIL to SDY flight.
How many flights per day from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY)?
Every day on average, 5 nonstop flights take off from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY). Select the departure date that best suits your plans.
What are the most popular departure times for flights from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY)?
More passengers fly between BIL and SDY at 7 AM than at any other time. Prefer a quieter experience? Travel outside of rush hours and you're likely to save on your ticket as well.
What day of the week has the most flights from BIL to SDY?
If you jet off on a Friday, you'll get the largest range of options for flights from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY).
What is the earliest flight from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY)?
Logan Intl. Airport (BIL)'s first flight to Sidney-Richland Municipal Airport (SDY) is at approximately 7:15AM UTC-7. With a total travel time of 1h 43m, you'll touch down at around 8:58AM UTC-7.
How long does it take to fly from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY)?
The average flight time from BIL to SDY is 1 hour and 46 minutes, covering a total distance of 240 mi.
What airline has the least delays from BIL to SDY?
Consider traveling with Cape Air if you'd like to go straight from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY) without any interruptions. This airline has the best track record for punctuality, with an on-time performance of 82%. Want to be updated if anything changes? You can check your flight status using the Expedia App.
What is the best time to fly from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY)?
To touch down at Sidney-Richland Municipal Airport (SDY) on schedule, select a flight that takes off from Logan Intl. Airport (BIL) before 3 PM. The chance 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.
What airports do you fly into for Sidney from Logan Intl. Airport (BIL)?
You can land at Sidney-Richland Municipal Airport (SDY) or Dawson Community Airport (GDV) when you travel to Sidney on a direct flight from Logan Intl. Airport (BIL).
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY) last-minute?
Last-minute bookings from BIL to SDY are generally more expensive. For the best rates, start searching for flights well in advance. That being said, if you can play around with your travel dates, you may find a cheap ticket right before you leave.
Is it cheaper to book a BIL to SDY flight and hotel package?
You'll generally save money by securing a BIL to SDY flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your ideal accommodations and flights, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from Logan Intl. Airport (BIL) to Sidney-Richland Municipal Airport (SDY)?
Typically, you're able to reschedule or cancel your BIL to SDY flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further details, visit our Customer Service portal.

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*Available to One Key members.