$559+ Cheap flights from California to Sidney, MT (SDY)
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 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SDY
Dec 3 — Dec 101
1 adult, Economy
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Find cheap flights from California to Sidney with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from California to Sidney
Keep the following information in mind while searching for California to Sidney flight deals. Data was last updated November 3, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $559 (eDestinos) |
Find flight deals from California to Sidney
Cheapest flights from California to SidneyExplore the most affordable flight options available from California to Sidney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.
Explore the most affordable flight options available from California to Sidney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.
This eDestinos deal was found by Cheapflights users on 11/2. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/183:20 pmLAX - SDY
2 stops22h 00mMultiple Airlines
Thu 12/257:35 amSDY - LAX
2 stops17h 47mMultiple Airlines
Deal found 11/2![Multiple Airlines logo]()
$559
Cheapflights Fare Finder
Customize your flight search to find flights from California to Sidney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
Use the filters below to find and compare flights from California to Sidney that are best for you.
Fly from
California
Fly to
Sidney
Route
Depart
Return
Price
Los AngelesSidney
LAX - SDY
LAXSDY
Los Angeles
Thu 12/18
3:20 pm-2:20 pm
2 stops22h 00m
Sidney Richland Municipal
Thu 12/25
7:35 am-12:22 am
2 stops17h 47m
$559
Best time to book a flight from California to Sidney
Have a flexible travel schedule? Discover the best time to fly to Sidney from California 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.
Cheapflights Insights
Everything you need to know about your flight from California to Sidney
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