$81+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
SDY — BIL
May 7 — May 141
Round-trip
1 adult, Economy
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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 April 7, 2026. In the last 7 days, Cheapflights users made a total of 2,558,603 searches
Fly to
Route
Depart
Return
Cheapest round-trip
SidneyBillings
SDY - BIL
SDYBIL
Sidney Richland Municipal
Mon 4/27
1:04 pm-2:56 pm
Nonstop1h 52m
Billings Logan Intl
Wed 4/29
12:35 pm-2:20 pm
Nonstop1h 45m
$81
Quickest round-trip
SidneyBillings
SDY - BIL
SDYBIL
Sidney Richland Municipal
Thu 5/14
9:45 am-11:32 am
Nonstop1h 47m
Billings Logan Intl
Thu 5/21
2:54 pm-4:36 pm
Nonstop1h 42m
$83
SidneyBillings
SDY - BIL
SDYBIL
Sidney Richland Municipal
Fri 4/17
1:04 pm-2:56 pm
Nonstop1h 52m
Billings Logan Intl
Tue 4/21
7:25 am-9:10 am
Nonstop1h 45m
$100
SidneyBillings
SDY - BIL
SDYBIL
Sidney Richland Municipal
Fri 4/17
2:55 pm-4:48 pm
Nonstop1h 53m
Billings Logan Intl
Sun 4/19
6:06 pm-7:51 pm
Nonstop1h 45m
$100
SidneyBillings
SDY - BIL
SDYBIL
Sidney Richland Municipal
Sat 4/25
9:45 am-11:38 am
Nonstop1h 53m
Billings Logan Intl
Tue 4/28
12:35 pm-2:20 pm
Nonstop1h 45m
$100
Sorted by cheapest first
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 April
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: Among all the travel providers offering deals on flights from Sidney, Montana, FlightHub has been found to have the most accurate pricing. Users can find the same prices on deals on Cheapflights as FlightHub 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 FlightHub the highest out of those offering flight deals from Sidney, Montana. FlightHub 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.
SDY-BIL
SDY-CAI
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.
Travel insights for flights from Sidney
Get recent, data-driven insights about flights from Sidney including ideal travel times, pricing trends, and more.
SDY-BIL
SDY-CAI
No data available for this route at this time. Please check back soon.
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