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.

$421 Cheap Flights from California to Sidney, Montana in 2026

1 adult

0 bags

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Find the cheapest flights from California to Sidney

Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:03 pm - 12:26 pm

ONT

SDY

19h 23m

2 stops

1:04 pm - 8:24 pm

SDY

ONT

8h 20m

2 stops

$468Multiple Airlines

Wed, May 27 - Tue, Aug 25

7:00 am - 7:48 pm

ONT

SDY

11h 48m

2 stops

1:04 pm - 8:24 pm

SDY

ONT

8h 20m

2 stops

$497Multiple Airlines

Sat, May 30 - Tue, Aug 25

7:00 am - 7:48 pm

LAX

SDY

11h 48m

2 stops

2:55 pm - 12:05 am

SDY

LAX

10h 10m

2 stops

$631Multiple Airlines

Sat, Aug 1 - Thu, Aug 6

6:02 am - 4:36 pm

ONT

SDY

9h 34m

2 stops

5:10 pm - 11:14 am

SDY

ONT

19h 04m

2 stops

$766Multiple Airlines

Sat, Aug 1 - Thu, Aug 6

7:40 am - 7:48 pm

SFO

SDY

11h 08m

2 stops

7:35 am - 7:56 pm

SDY

SFO

13h 21m

2 stops

$900Multiple Airlines

Fri, May 22 - Sun, May 24

8:00 am - 4:36 pm

SJC

SDY

31h 36m

2 stops

9:45 am - 11:31 pm

SDY

SJC

14h 46m

2 stops

$989Multiple Airlines

Fri, May 22 - Sun, May 24

6:00 am - 4:36 pm

LAX

SDY

9h 36m

2 stops

7:35 am - 8:14 pm

SDY

LAX

13h 39m

2 stops

$1,026Multiple Airlines

Fri, May 22 - Mon, May 25

6:00 am - 4:36 pm

ONT

SDY

9h 36m

2 stops

7:35 am - 11:56 pm

SDY

ONT

17h 21m

2 stops

$1,154Multiple Airlines

Thu, May 21 - Mon, May 25

6:00 am - 4:36 pm

SFO

SDY

9h 36m

2 stops

9:45 am - 7:56 pm

SDY

SFO

11h 11m

2 stops

$1,176Multiple Airlines

Thu, May 21 - Mon, May 25

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSidney

ONT - SDY

ONTSDY

Ontario

Wed 5/27

4:03 pm-12:26 pm

2 stops19h 23m

Sidney Richland Municipal

Tue 8/25

1:04 pm-8:24 pm

2 stops8h 20m

$468

Quickest round-trip

OntarioSidney

ONT - SDY

ONTSDY

Ontario

Sat 5/30

7:00 am-7:48 pm

2 stops11h 48m

Sidney Richland Municipal

Tue 8/25

1:04 pm-8:24 pm

2 stops8h 20m

$497

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

Sat 8/1

7:00 am-7:48 pm

2 stops11h 48m

Sidney Richland Municipal

Thu 8/6

2:55 pm-12:05 am

2 stops10h 10m

$631

OntarioSidney

ONT - SDY

ONTSDY

Ontario

Sat 8/1

6:02 am-4:36 pm

2 stops9h 34m

Sidney Richland Municipal

Thu 8/6

5:10 pm-11:14 am

2 stops19h 04m

$766

San FranciscoSidney

SFO - SDY

SFOSDY

San Francisco

Fri 5/22

7:40 am-7:48 pm

2 stops11h 08m

Sidney Richland Municipal

Sun 5/24

7:35 am-7:56 pm

2 stops13h 21m

$900

San JoseSidney

SJC - SDY

SJCSDY

San Jose

Fri 5/22

8:00 am-4:36 pm

2 stops31h 36m

Sidney Richland Municipal

Sun 5/24

9:45 am-11:31 pm

2 stops14h 46m

$989

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

Fri 5/22

6:00 am-4:36 pm

2 stops9h 36m

Sidney Richland Municipal

Mon 5/25

7:35 am-8:14 pm

2 stops13h 39m

$1,026

OntarioSidney

ONT - SDY

ONTSDY

Ontario

Thu 5/21

6:00 am-4:36 pm

2 stops9h 36m

Sidney Richland Municipal

Mon 5/25

7:35 am-11:56 pm

2 stops17h 21m

$1,154

San FranciscoSidney

SFO - SDY

SFOSDY

San Francisco

Thu 5/21

6:00 am-4:36 pm

2 stops9h 36m

Sidney Richland Municipal

Mon 5/25

9:45 am-7:56 pm

2 stops11h 11m

$1,176

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 40m 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 Los Angeles and into Williston, then the flight time is around 7h 31m.

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	9h 36m
Direct flights	None

The fastest flight from California to Sidney, Montana takes 9h 36m

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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Frequently asked questions about flying from California to Sidney, Montana

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.