$100+ Cheap flights from Sidney, MT
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
SDY — BIL
Jan 14 — Jan 211
1 adult, Economy
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Find flights from Sidney
Cheapest flights from SidneyExplore the most affordable flight options available from Sidney. Find the lowest fares based on data from user searches, with prices last updated on December 15, 2025.
Explore the most affordable flight options available from Sidney. Find the lowest fares based on data from user searches, with prices last updated on December 15, 2025.
This Cape Air deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cape Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/227:35 amSDY - BIL
Nonstop1h 53mCape Air
Mon 1/2610:44 amBIL - SDY
Nonstop1h 45mCape Air
Deal found 12/14![Cape Air logo]()
$100
Find flights from Sidney within your budget
Find flights departing from Sidney that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on December 15, 2025. In the last 7 days, Cheapflights users made a total of 2,558,603 searches
Fly to
Billings
Route
Depart
Return
Price
SidneyBillings
SDY - BIL
SDYBIL
Sidney Richland Municipal
Thu 1/22
1:04 pm-2:56 pm
Nonstop1h 52m
Billings Logan Intl
Mon 1/26
10:44 am-12:29 pm
Nonstop1h 45m
$100
Compare providers for flights from Sidney
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sidney in December
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: Among all the travel providers offering deals on flights from Sidney, Montana, eDreams has been found to have the most accurate pricing. Users can find the same prices on deals on Cheapflights as eDreams about >95% of the time. This is based on searches for flights from Sidney, Montana made on Cheapflights over the past month and is updated monthly.
- Most trusted provider: In terms of trustworthiness, Cheapflights users rate eDreams the highest out of those offering flight deals from Sidney, Montana. eDreams has a user feedback rating of 3 out of 3 stars (3 being the best) and has received the most positive sentiment from Cheapflights users searching for flights from Sidney, Montana. This info is gathered from Cheapflights searches over the past month.
Best time to book a flight from Sidney
Have a flexible travel schedule? Discover the best time to fly from Sidney with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.