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

View $50 flight on Sat, May 2, 2026Opens in a new window

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

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
Mon, Apr 27 - Tue, Apr 28
BIL
Billings
SDY
Sidney
$110 Roundtrip, found 5 hours ago
$110
Roundtrip
found 5 hours ago
Select Cape Air flight, departing Mon, Apr 27 from Billings to Sidney, returning Tue, Apr 28, priced at $110 found 5 hours ago
Cape Air
Mon, Apr 27 - Tue, Apr 28
BIL
Billings
SDY
Sidney
$120 Roundtrip, found 5 hours ago
$120
Roundtrip
found 5 hours ago
Select Cape Air flight, departing Mon, Apr 27 from Billings to Sidney, returning Tue, Apr 28, priced at $120 found 5 hours ago
Cape Air
Fri, Apr 24 - Sun, Apr 26
BIL
Billings
SDY
Sidney
$130 Roundtrip, found 12 hours ago
$130
Roundtrip
found 12 hours ago
Select Cape Air flight, departing Fri, Apr 24 from Billings to Sidney, returning Sun, Apr 26, priced at $130 found 12 hours ago
Cape Air
Fri, Apr 24 - Tue, Apr 28
BIL
Billings
SDY
Sidney
$130 Roundtrip, found 4 days ago
$130
Roundtrip
found 4 days ago
Select Cape Air flight, departing Fri, Apr 24 from Billings to Sidney, returning Tue, Apr 28, priced at $130 found 4 days 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

Frequently asked questions

How much does a flight from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) cost?
You can find cheap one-way flights from $50 and cheap return flights from $110 Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) with Expedia. One-way flights usually range from $47 to $60, and return flights typically cost between $93 and $110. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
The cheapest month to fly from BIL to SDY is April when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
Enter BIL to SDY and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
SkyWest Airlines is one of the cheapest airlines offering nonstop flights from Logan Intl. (BIL) to Sidney-Richland Municipal (SDY), with return tickets starting from around $93. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
To find a cheap flight from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
The best airline to fly with from Billings, MT (BIL) to Sidney, MT (SDY) will differ from traveler to traveler. If you like to fly early, 9K offers early morning flights. If price is the most important factor, 9K typically offers the lowest fares. 9K offers the most daily flights from BIL to SDY, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
There are approximately 5 nonstop flights per day from Logan Intl. (BIL) to Sidney-Richland Municipal (SDY). For more options, look at flights that include layovers.
What is the earliest flight from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
The earliest flight from Logan International Airport (BIL) to Sidney-Richland Municipal Airport (SDY) usually departs at 7:15 AM, operated by 9K. An early flight like this can help you arrive in Sidney with plenty of time to explore. This service operates seasonally from March to September. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
The most popular departure times for flights from Logan Intl. (BIL) to Sidney-Richland Municipal (SDY) are in the early afternoon, from 12pm to 3pm. About 33% of passengers prefer this time window. The only airline offering flights during this window is 9K. This timing is convenient for travelers looking to make the most of their day.
How long does it take to fly from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
A nonstop flight from BIL to SDY typically takes around 1 hour 50 minutes, covering approximately 245 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
Select the "Business class" and "First class" filters when looking for BIL to SDY flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) flight with Expedia?
It's easy to earn miles on a Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Sidney from Logan Intl. (BIL)?
From Logan Intl. (BIL), you can fly typically into Sidney-Richland Municipal (SDY) to reach Sidney. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) at the last minute?
Typically, booking a last minute flight from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) flight and hotel package?
Securing a Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal)?
If you booked your Billings, MT (BIL-Logan Intl.) to Sidney, MT (SDY-Sidney-Richland Municipal) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Logan Intl.
Destination airport
Sidney-Richland Municipal
Airlines serving
Cape Air
Roundtrip price
$94
Distance
244 mi
Average flight time
1 hour 45 mins

Book with confidence

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 April. 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 2026. 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.

 

Billings to Sidney Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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