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Flights to Sidney Richland Municipal

$604 Cheap flights to Sidney, Montana

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight to Sidney, Montana departing on 8/18. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from the United States to Sidney, Montana

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:00 am - 4:36 pm
DEN
-
SDY
8h 36m
1 stop
Multiple Airlines Logo
2:55 pm - 7:53 pm
SDY
-
DEN
4h 58m
1 stop
$604Multiple Airlines
Tue, Aug 18 - Wed, Aug 19
Multiple Airlines Logo
7:00 am - 12:26 pm
LAX
-
SDY
28h 26m
2 stops
Multiple Airlines Logo
6:52 pm - 12:27 pm
SDY
-
LAX
18h 35m
2 stops
$632Multiple Airlines
Sun, Aug 16 - Sun, Aug 23
Multiple Airlines Logo
7:20 am - 2:17 pm
SFO
-
SDY
29h 57m
2 stops
Multiple Airlines Logo
8:43 am - 9:07 am
SDY
-
SFO
25h 24m
2 stops
$642Multiple Airlines
Sat, Aug 15 - Sat, Aug 22
Multiple Airlines Logo
6:00 am - 4:36 pm
LAX
-
SDY
9h 36m
2 stops
Multiple Airlines Logo
9:45 am - 12:05 am
SDY
-
LAX
15h 20m
2 stops
$686Multiple Airlines
Thu, Jul 16 - Mon, Jul 20
Multiple Airlines Logo
12:46 pm - 12:26 pm
LAX
-
SDY
22h 40m
2 stops
Multiple Airlines Logo
2:55 pm - 9:32 am
SDY
-
LAX
19h 37m
2 stops
$764Multiple Airlines
Fri, Jul 31 - Fri, Aug 7
Multiple Airlines Logo
10:34 pm - 7:48 pm
IAD
-
SDY
23h 14m
2 stops
Multiple Airlines Logo
3:38 pm - 11:24 am
SDY
-
IAD
17h 46m
2 stops
$774Multiple Airlines
Sat, Aug 15 - Sun, Aug 23
Multiple Airlines Logo
6:02 am - 4:36 pm
DEN
-
SDY
10h 34m
2 stops
Multiple Airlines Logo
9:45 am - 11:16 pm
SDY
-
DEN
13h 31m
2 stops
$810Multiple Airlines
Tue, Aug 18 - Wed, Aug 19
Multiple Airlines Logo
6:02 am - 7:48 pm
DEN
-
SDY
13h 46m
2 stops
Multiple Airlines Logo
7:35 am - 10:45 pm
SDY
-
DEN
15h 10m
2 stops
$997Multiple Airlines
Thu, Jul 16 - Mon, Jul 20
Multiple Airlines Logo
8:00 am - 7:48 pm
DEN
-
SDY
11h 48m
2 stops
Multiple Airlines Logo
1:04 pm - 9:40 pm
SDY
-
DEN
8h 36m
2 stops
$1,050Multiple Airlines
Mon, Jul 13 - Fri, Jul 17
Multiple Airlines Logo
6:03 am - 7:48 pm
IAD
-
SDY
15h 45m
2 stops
Multiple Airlines Logo
9:45 am - 6:39 am
SDY
-
IAD
18h 54m
2 stops
$1,153Multiple Airlines
Thu, Jul 16 - Mon, Jul 20

momondo Fare Finder

 
Locate flights to Sidney Richland Municipal that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 832,500 searches and data was last updated on July 3, 2026.
Use the filters below to find and compare flights to Sidney, Montana that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DenverSidney

DEN - SDY

DENSDY

Denver Intl

Tue 8/18

8:00 am-4:36 pm

1 stop8h 36m

Sidney Richland Municipal

Wed 8/19

2:55 pm-7:53 pm

1 stop4h 58m

$604

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

Sun 8/16

7:00 am-12:26 pm

2 stops28h 26m

Sidney Richland Municipal

Sun 8/23

6:52 pm-12:27 pm

2 stops18h 35m

$632

San FranciscoSidney

SFO - SDY

SFOSDY

San Francisco

Sat 8/15

7:20 am-2:17 pm

2 stops29h 57m

Sidney Richland Municipal

Sat 8/22

8:43 am-9:07 am

2 stops25h 24m

$642

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

Thu 7/16

6:00 am-4:36 pm

2 stops9h 36m

Sidney Richland Municipal

Mon 7/20

9:45 am-12:05 am

2 stops15h 20m

$686

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

Fri 7/31

12:46 pm-12:26 pm

2 stops22h 40m

Sidney Richland Municipal

Fri 8/7

2:55 pm-9:32 am

2 stops19h 37m

$764

Washington, D.C.Sidney

IAD - SDY

IADSDY

Washington, D.C. Dulles Intl

Sat 8/15

10:34 pm-7:48 pm

2 stops23h 14m

Sidney Richland Municipal

Sun 8/23

3:38 pm-11:24 am

2 stops17h 46m

$774

DenverSidney

DEN - SDY

DENSDY

Denver Intl

Tue 8/18

6:02 am-4:36 pm

2 stops10h 34m

Sidney Richland Municipal

Wed 8/19

9:45 am-11:16 pm

2 stops13h 31m

$810

DenverSidney

DEN - SDY

DENSDY

Denver Intl

Thu 7/16

6:02 am-7:48 pm

2 stops13h 46m

Sidney Richland Municipal

Mon 7/20

7:35 am-10:45 pm

2 stops15h 10m

$997

DenverSidney

DEN - SDY

DENSDY

Denver Intl

Mon 7/13

8:00 am-7:48 pm

2 stops11h 48m

Sidney Richland Municipal

Fri 7/17

1:04 pm-9:40 pm

2 stops8h 36m

$1,050

Washington, D.C.Sidney

IAD - SDY

IADSDY

Washington, D.C. Dulles Intl

Thu 7/16

6:03 am-7:48 pm

2 stops15h 45m

Sidney Richland Municipal

Mon 7/20

9:45 am-6:39 am

2 stops18h 54m

$1,153

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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Sidney, Montana flights insights and trends

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

On average, it takes 5h 28m to fly from United States to Sidney, Montana if you fly out of Los Angeles (the most popular airport in United States) and into Williston Basin Intl (the most popular airport in Sidney, Montana). If you’re flying out of San Francisco and into Williston Basin Intl, then the flight time is around 13h 01m.

Cheap Sidney, Montana flight deals and tips

Summary info about Sidney, Montana flight prices, duration and airlines

Best Round-Trip Price

$604

Fastest flight time

8h 36m
The best round-trip flight price to Sidney from United States in the last 5 days is $604 (Denver Intl to Sidney Richland Municipal).
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The fastest flight to Sidney from United States takes 8h 36m (Denver Intl to Sidney Richland Municipal).
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Frequently asked questions about flying to Sidney, Montana

Is there an alternative airport near Sidney, Montana?

Sidney Richland Municipal Airport, Glendive Mont Dawson Airport, Wolf Point Airport or Dickinson Airport can be an alternative airport used for travel to Sidney, Montana.

When did momondo last update prices for flights to Sidney Richland Municipal Airport?

Prices for flights to Sidney Richland Municipal Airport refresh daily.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Sidney Richland Municipal Airport.

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

The necessary travel and health documents for your Sidney Richland Municipal Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights to Sidney. Millions of users trust and use momondo every year so you are in good company.

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

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

How can momondo help me find flights to Sidney?

Once all potential Sidney flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Sidney. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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