$88+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SDY — BIL
Aug 23 — Aug 301
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 August 18, 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 August 18, 2025.
Mon 9/112:52 pmSDY - BIL
Nonstop1h 50mCape Air
Fri 9/53:06 pmBIL - SDY
Nonstop1h 42mCape Air
Deal found 8/17$88
Sun 9/147:35 amSDY - BIL
Nonstop1h 55mCape Air
Sun 9/213:03 pmBIL - SDY
Nonstop1h 42mCape Air
Deal found 8/17$89
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 August 18, 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
Mon 9/1
12:52 pm-2:42 pm
Nonstop1h 50m
Billings Logan Intl
Fri 9/5
3:06 pm-4:48 pm
Nonstop1h 42m
$88
SidneyBillings
SDY - BIL
SDYBIL
Sidney Richland Municipal
Sun 9/14
7:35 am-9:30 am
Nonstop1h 55m
Billings Logan Intl
Sun 9/21
3:03 pm-4:45 pm
Nonstop1h 42m
$89
SidneyBillings
SDY - BIL
SDYBIL
Sidney Richland Municipal
Sun 8/31
2:42 pm-4:32 pm
Nonstop1h 50m
Billings Logan Intl
Thu 9/4
3:06 pm-4:48 pm
Nonstop1h 42m
$100
Best time to book a flight from Sidney
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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.
Which airlines fly from Sidney, Montana?
For flights departing from Sidney, Montana check dates and pricing for the following: Cape Air. This airline departs to the following popular destinations: Billings.