$546+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SDY
Apr 29 — May 61
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
Keep the following information in mind while searching for North America to Sidney flight deals. Data was last updated April 24, 2025.
Round-trip from | $1,350 (Expedia) |
|---|
Find flight deals from North America to Sidney
Cheapest flights from North America to SidneyExplore 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 April 24, 2025.
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 April 24, 2025.
This United deal was found by Cheapflights users on 4/21. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/266:35 amIAD - SDY
2 stops9h 42mMultiple Airlines
Tue 9/97:35 amSDY - IAD
2 stops11h 20mMultiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$546
This Expedia deal was found by Cheapflights users on 4/23. 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 6/229:15 pmHNL - SDY
2 stops18h 23mMultiple Airlines
Sun 6/299:22 amSDY - HNL
2 stops18h 12mMultiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,350
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 April 24, 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
Washington, D.C.Sidney
IAD - SDY
IADSDY
Washington, D.C. Dulles Intl
Tue 6/17
6:35 am-7:38 pm
2 stops15h 03m
Sidney Richland Municipal
Mon 6/23
12:52 pm-12:34 am
2 stops33h 42m
$746
HonoluluSidney
HNL - SDY
HNLSDY
Honolulu
Sun 6/22
9:15 pm-7:38 pm
2 stops18h 23m
Sidney Richland Municipal
Sun 6/29
9:22 am-11:34 pm
2 stops18h 12m
$1,350
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
Rainfall in Sidney by month
Plan your trip to Sidney by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Sidney, Montana ranges from 0.0 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Sidney, Montana when rainfall is around 0.0 in.
Temperature in Sidney by month
Plan your trip to Sidney by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Sidney, Montana, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 10.4 F).