HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sidney

$364+ Cheap flights from North America 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 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SDY
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from North America 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 North America to Sidney

Cheapest flights from North America to Sidney
Explore the most affordable flight options available from North America to Sidney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Expedia deal was found by Cheapflights users on 2/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:00 am
LAX
-
SDY
2 stops8h 39m
Multiple Airlines
Tue 3/319:45 am
SDY
-
LAX
2 stops12h 58m
Multiple Airlines
Deal found 2/3$364
This Expedia deal was found by Cheapflights users on 2/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:05 am
LAX
-
SDY
2 stops11h 46m
Multiple Airlines
Wed 5/67:35 am
SDY
-
LAX
2 stops13h 47m
Multiple Airlines
Deal found 2/1$437
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/174:21 pm
SFO
-
SDY
2 stops15h 49m
Multiple Airlines
Sat 2/211:04 pm
SDY
-
SFO
2 stops7h 43m
Multiple Airlines
Deal found 2/2$746
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/78:00 am
LAX
-
SDY
2 stops10h 51m
Multiple Airlines
Sat 2/141:04 pm
SDY
-
LAX
2 stops8h 04m
Multiple Airlines
Deal found 2/2$897

Find flight deals from North America to Sidney

Keep the following information in mind while searching for North America to Sidney flight deals. Data was last updated February 3, 2026.

Round-trip from

$364
(Expedia)
From North America to Sidney Richland Municipal
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from North America 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 February 3, 2026.
Use the filters below to find and compare flights from North America to Sidney that are best for you.

Fly from

North America

Fly to

Sidney

Route

Depart

Return

Price

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

Sat 3/14

7:00 am-4:39 pm

2 stops8h 39m

Sidney Richland Municipal

Tue 3/31

9:45 am-9:43 pm

2 stops12h 58m

$364

Los AngelesSidney

LAX - SDY

LAXSDY

Los Angeles

Wed 4/22

7:05 am-7:51 pm

2 stops11h 46m

Sidney Richland Municipal

Wed 5/6

7:35 am-8:22 pm

2 stops13h 47m

$437

San FranciscoSidney

SFO - SDY

SFOSDY

San Francisco

Tue 2/17

4:21 pm-9:10 am

2 stops15h 49m

Sidney Richland Municipal

Sat 2/21

1:04 pm-7:47 pm

2 stops7h 43m

$746

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Best time to book a flight from North America to Sidney

Have a flexible travel schedule? Discover the best time to fly to Sidney from North America 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 North America to Sidney

What is the cheapest month to book a flight from North America to Sidney, Montana?

Currently, April is the cheapest month in which you can book a flight from North America to Sidney, Montana (average of $152). Flying from North America to Sidney, Montana in July is currently the most expensive (average of $326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from North America to Sidney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sidney from North America?

    Sidney Richland Municipal (SDY), located 1.8 mi from the city center, is the airport you fly into when you book flights from North America to Sidney.

  • What are the most popular routes from North America to Sidney, Montana?

    Most travelers choose Los Angeles - Sidney Richland Municipal, Boston Logan Intl - Sidney Richland Municipal or Reno - Sidney Richland Municipal when deciding on the best route from North America to Sidney, Montana.

  • Can I find deals for flights from North America to Sidney that include hotel bookings?

    Yes. In addition to deals on North America to Sidney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from North America to Sidney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from North America to Sidney.

  • Can I find deals for business class flights from North America to Sidney?

    Yes. Cheapflights offers flight deals from North America to Sidney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from North America to Sidney, Montana?

    Currently, April is the cheapest month in which you can book a flight from North America to Sidney, Montana (average of $152). Flying from North America to Sidney, Montana in July is currently the most expensive (average of $326). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for North America to Sidney

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Bozeman flights
John F Kennedy Intl to Bozeman flights
Boston to Bozeman flights
O'Hare Intl to Bozeman flights
LaGuardia to Bozeman flights
Los Angeles to Bozeman flights
San Francisco to Bozeman flights
Atlanta to Bozeman flights
Dulles Intl to Bozeman flights
Minneapolis to Bozeman flights
Dallas/Fort Worth to Bozeman flights
O'Hare Intl to Kalispell flights
Dallas/Fort Worth to Kalispell flights
Baltimore to Bozeman flights
Midway to Bozeman flights
Seattle to Bozeman flights
Denver to Bozeman flights
Reagan-National to Bozeman flights
Charlotte to Bozeman flights
Hobby to Bozeman flights
O'Hare Intl to Missoula flights
John F Kennedy Intl to Kalispell flights
Dallas/Fort Worth to Missoula flights
Minneapolis to Kalispell flights
Philadelphia to Bozeman flights
Hobby to Kalispell flights
Newark to Kalispell flights
San Diego to Bozeman flights
San Francisco to Kalispell flights
Denver to Kalispell flights
Tampa to Bozeman flights
Sky Harbor Intl to Bozeman flights
Boston to Kalispell flights
George Bush Intcntl to Bozeman flights
Dulles Intl to Kalispell flights
Pittsburgh to Bozeman flights
Detroit to Bozeman flights
Fort Lauderdale to Bozeman flights
Los Angeles to Kalispell flights
Dallas/Fort Worth to Billings flights
Minneapolis to Missoula flights
Raleigh to Bozeman flights
Indianapolis to Bozeman flights
John F Kennedy Intl to Missoula flights
George Bush Intcntl to Kalispell flights
Austin to Bozeman flights
Orlando to Bozeman flights
Milwaukee to Bozeman flights
LaGuardia to Kalispell flights
Denver to Missoula flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.