Which airlines fly to Sidney, Montana?

United Airlines is the airline most momondo users in United States opt for when booking flights to Sidney, Montana. Delta is also popular choice when flying to Sidney, Montana from United States. Most major airlines flying from United States to Sidney, Montana will offer flights on a regular basis, though your options may vary depending on what airport you fly from.

$437 Cheap Flights to Sidney in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

Round-trip

One-way

Last minute

Cheap round-trip flights

5:36 pm - 9:07 amLAX-SDY

14h 31m2 stops

12:52 pm - 12:01 amSDY-LAX

12h 09m2 stops

$437

Find Deal

lun., sep. 8 - mar., oct. 21

3:06 pm - 12:27 pmONT-SDY

20h 21m2 stops

9:32 am - 12:03 amSDY-ONT

15h 31m2 stops

$437

Find Deal

lun., sep. 8 - mié., oct. 22

3:06 pm - 9:07 amONT-SDY

17h 01m2 stops

9:32 am - 12:03 amSDY-ONT

15h 31m2 stops

$456

Find Deal

lun., sep. 8 - sáb., oct. 18

5:36 pm - 9:07 amLAX-SDY

14h 31m2 stops

9:32 am - 8:44 pmSDY-LAX

12h 12m2 stops

$481

Find Deal

lun., sep. 8 - mié., oct. 22

7:00 am - 4:48 pmLAX-SDY

8h 48m2 stops

12:52 pm - 12:01 amSDY-LAX

12h 09m2 stops

$506

Find Deal

sáb., sep. 6 - sáb., oct. 18

7:10 am - 7:38 pmONT-SDY

11h 28m2 stops

9:32 am - 12:03 amSDY-ONT

15h 31m2 stops

$506

Find Deal

sáb., sep. 6 - sáb., oct. 18

3:06 pm - 9:07 amONT-SDY

17h 01m2 stops

2:42 pm - 12:03 amSDY-ONT

10h 21m2 stops

$532

Find Deal

lun., sep. 8 - dom., oct. 19

3:06 pm - 12:27 pmONT-SDY

20h 21m2 stops

7:35 am - 12:03 amSDY-ONT

17h 28m2 stops

$549

Find Deal

lun., sep. 8 - sáb., oct. 25

7:10 am - 7:38 pmONT-SDY

11h 28m2 stops

7:35 am - 12:03 amSDY-ONT

17h 28m2 stops

$582

Find Deal

sáb., sep. 6 - dom., oct. 19

6:00 am - 7:38 pmONT-SDY

12h 38m2 stops

9:32 am - 12:03 amSDY-ONT

15h 31m2 stops

$599

Find Deal

sáb., sep. 6 - sáb., oct. 25

Fly from

Route

Depart

Return

Price

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

lun. 9/8

5:36 pm-9:07 am

2 stops14h 31m

Sidney Richland Municipal

mar. 10/21

12:52 pm-12:01 am

2 stops12h 09m

$437

OntarioSidney

ONT - SDY

ONTSDY

Ontario

lun. 9/8

3:06 pm-12:27 pm

2 stops20h 21m

Sidney Richland Municipal

mié. 10/22

9:32 am-12:03 am

2 stops15h 31m

$437

OntarioSidney

ONT - SDY

ONTSDY

Ontario

lun. 9/8

3:06 pm-9:07 am

2 stops17h 01m

Sidney Richland Municipal

sáb. 10/18

9:32 am-12:03 am

2 stops15h 31m

$456

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

lun. 9/8

5:36 pm-9:07 am

2 stops14h 31m

Sidney Richland Municipal

mié. 10/22

9:32 am-8:44 pm

2 stops12h 12m

$481

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

sáb. 9/6

7:00 am-4:48 pm

2 stops8h 48m

Sidney Richland Municipal

sáb. 10/18

12:52 pm-12:01 am

2 stops12h 09m

$506

OntarioSidney

ONT - SDY

ONTSDY

Ontario

sáb. 9/6

7:10 am-7:38 pm

2 stops11h 28m

Sidney Richland Municipal

sáb. 10/18

9:32 am-12:03 am

2 stops15h 31m

$506

OntarioSidney

ONT - SDY

ONTSDY

Ontario

lun. 9/8

3:06 pm-9:07 am

2 stops17h 01m

Sidney Richland Municipal

dom. 10/19

2:42 pm-12:03 am

2 stops10h 21m

$532

OntarioSidney

ONT - SDY

ONTSDY

Ontario

lun. 9/8

3:06 pm-12:27 pm

2 stops20h 21m

Sidney Richland Municipal

sáb. 10/25

7:35 am-12:03 am

2 stops17h 28m

$549

OntarioSidney

ONT - SDY

ONTSDY

Ontario

sáb. 9/6

7:10 am-7:38 pm

2 stops11h 28m

Sidney Richland Municipal

dom. 10/19

7:35 am-12:03 am

2 stops17h 28m

$582

OntarioSidney

ONT - SDY

ONTSDY

Ontario

sáb. 9/6

6:00 am-7:38 pm

2 stops12h 38m

Sidney Richland Municipal

sáb. 10/25

9:32 am-12:03 am

2 stops15h 31m

$599

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first

Cheap Sidney, Montana flight deals and tips

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

Best One-Way Price	$522
Best Round-Trip Price	$437
Fastest flight time	14h 38m

The best one-way flight price to Sidney from United States in the last 72 hours is $522 (Washington, D.C. Dulles Intl to Sidney Richland Municipal).

Search Deals

The best round-trip flight price to Sidney from United States in the last 72 hours is $437 (Los Angeles to Sidney Richland Municipal).

Search Deals

The fastest flight to Sidney from United States takes 14h 38m (Washington, D.C. Dulles Intl to Sidney Richland Municipal).

Search Deals

Frequently asked questions about flying to Sidney, Montana

When are the weather conditions best for skiing in Sidney?

Typically, the best ski conditions are found in January, when the temperatures are lower and there is a chance of fresh snow. Popular places to ski in the Sidney area include Big Sky Resort. Alternatively, Whitefish Mountain Ski Resort is also a very popular ski mountain in the Sidney area.

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.

Is there a cheaper alternative to flying into Sidney, Montana?

Sidney Richland Municipal Airport has an average price of $77 per person and is typically the cheapest airport to fly into when visiting Sidney, Montana. This average price does vary based on departure city. Try momondo’s Airport-to-Airport Pricing Tool to find the cheapest flight.

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.