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Cheap flights from California to Sidney from $351

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from California to Sidney departing on 3/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from California to Sidney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 am - 9:10 am
LAX
-
SDY
25h 10m
2 stops
Multiple Airlines Logo
5:10 pm - 5:06 pm
SDY
-
LAX
24h 56m
2 stops
$351Multiple Airlines
Sat, Mar 14 - Tue, Mar 31
Multiple Airlines Logo
7:00 am - 9:10 am
LAX
-
SDY
25h 10m
2 stops
Multiple Airlines Logo
1:04 pm - 5:06 pm
SDY
-
LAX
29h 02m
2 stops
$384Multiple Airlines
Sat, Mar 14 - Tue, Mar 31
Multiple Airlines Logo
2:36 pm - 9:10 am
SJC
-
SDY
17h 34m
2 stops
Multiple Airlines Logo
7:35 am - 8:00 pm
SDY
-
SJC
13h 25m
2 stops
$678Multiple Airlines
Fri, Feb 20 - Tue, Feb 24

momondo Fare Finder

 
Customize your flight search to find flights from California to Sidney, Montana 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, momondo users made 832,500 searches. Data last updated February 7, 2026.
Use the filters below to find and compare flights from California to Sidney, Montana that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

Sat 3/14

7:00 am-9:10 am

2 stops25h 10m

Sidney Richland Municipal

Tue 3/31

5:10 pm-5:06 pm

2 stops24h 56m

$351

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

Sat 3/14

7:00 am-9:10 am

2 stops25h 10m

Sidney Richland Municipal

Tue 3/31

1:04 pm-5:06 pm

2 stops29h 02m

$384

San JoseSidney

SJC - SDY

SJCSDY

San Jose

Fri 2/20

2:36 pm-9:10 am

2 stops17h 34m

Sidney Richland Municipal

Tue 2/24

7:35 am-8:00 pm

2 stops13h 25m

$678

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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How to get the cheapest flight ticket from California to Sidney, Montana

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

How long does it take to fly to Sidney, Montana?

On average, it takes 5h 35m to fly from California to Sidney, Montana if you fly out of San Diego (the most popular airport in California) and into Williston (the most popular airport in Sidney, Montana). If you’re flying out of Santa Ana and into Williston, then the flight time is around 5h 45m.

Cheap California to Sidney, Montana flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from California to Sidney, Montana

Fastest flight time

11h 51m

Direct flights

None
The fastest flight from California to Sidney, Montana takes 11h 51m
There are no direct flights from California to Sidney, Montana. There are no popular flight routes from California to Sidney, Montana.
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  • When did momondo last update prices for flights from California to Sidney Richland Municipal Airport?

    Prices for flights from California to Sidney Richland Municipal Airport were last updated today.

  • How old do you have to be to fly from California to Sidney Richland Municipal Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from California to Sidney Richland Municipal Airport.

  • What documentation or ID do you need to fly to Sidney Richland Municipal Airport?

    The required travel and health documents for your Sidney Richland Municipal Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sidney Richland Municipal Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from California to Sidney?

Finding the right flight to Sidney from California is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sidney quick and easy, saving you time and money.

Can I find flights from California to Sidney with flexible booking policies on momondo?

Yes. All flights to Sidney from California on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from California to Sidney?

Once you have performed a search for California to Sidney flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from California to Sidney right now. Can momondo alert me if prices change?

Price alerts on flights to Sidney from California are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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