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$451+ 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 3/13. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SDY
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from North America to Sidney

Best flights from North America to Sidney
Discover carefully curated flight deals from North America to Sidney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This Travelocity deal was found by Cheapflights users on 12/15. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/137:00 amLAX - SDY
2 stops8h 39mMultiple Airlines
Wed 3/187:35 amSDY - LAX
2 stops11h 41mMultiple Airlines
Deal found 12/15$451
This Expedia deal was found by Cheapflights users on 12/16. 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.
Sun 3/17:00 amBOS - SDY
2 stops14h 51mMultiple Airlines
Sun 4/267:35 amSDY - BOS
2 stops21h 37mMultiple Airlines
Deal found 12/16$1,053
This Travelocity deal was found by Cheapflights users on 12/16. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:00 amBOS - SDY
2 stops14h 51mMultiple Airlines
Sat 4/259:45 amSDY - BOS
2 stops19h 27mMultiple Airlines
Deal found 12/16$1,173

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 December 18, 2025.

Round-trip from

$407
(Travelocity)
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 December 18, 2025.
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

Fri 3/13

7:00 am-4:39 pm

2 stops8h 39m

Sidney Richland Municipal

Wed 3/18

7:35 am-6:16 pm

2 stops11h 41m

$451

BostonSidney

BOS - SDY

BOSSDY

Boston Logan Intl

Sun 3/1

7:00 am-7:51 pm

2 stops14h 51m

Sidney Richland Municipal

Sun 4/26

7:35 am-7:12 am

2 stops21h 37m

$1,053

BostonSidney

BOS - SDY

BOSSDY

Boston Logan Intl

Sun 3/1

7:00 am-7:51 pm

2 stops14h 51m

Sidney Richland Municipal

Sat 4/25

9:45 am-7:12 am

2 stops19h 27m

$1,173

Washington, D.C.Sidney

IAD - SDY

IADSDY

Washington, D.C. Dulles Intl

Thu 1/1

6:30 pm-9:10 am

3 stops40h 40m

$1,253

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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, July is the cheapest month in which you can book a flight from North America to Sidney, Montana (average of $248). Flying from North America to Sidney, Montana in March is currently the most expensive (average of $581). 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 Boston Logan Intl - Sidney Richland Municipal, Los Angeles - 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, July is the cheapest month in which you can book a flight from North America to Sidney, Montana (average of $248). Flying from North America to Sidney, Montana in March is currently the most expensive (average of $581). 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

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