$604+ Cheap flights from Los Angeles to Sidney, MT (LAX - 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — SDY
Oct 22 — Oct 291
Round-trip
1 adult, Economy
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Find cheap flights from Los Angeles 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 Los Angeles to Sidney
Cheapest
Best
Last-minute
Cheapest flights from Los Angeles to SidneyExplore the most affordable flight options available from Los Angeles to Sidney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
Explore the most affordable flight options available from Los Angeles to Sidney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 22, 2026.
This KAYAK deal was found by Cheapflights users on 9/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:00 am -
2 stops28h 22m
Sat 12/191:04 pm -
2 stops8h 15m
Deal found 9/19![Multiple Airlines logo]()
$604
This United deal was found by Cheapflights users on 9/22. 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.
Sun 10/117:00 am -
2 stops30h 16m
Thu 10/159:25 am -
2 stops14h 25m
Deal found 9/22![Multiple Airlines logo]()
$747
This Expedia deal was found by Cheapflights users on 9/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:59 pm -
2 stops14h 59m
Sat 10/101:04 pm -
2 stops8h 41m
Deal found 9/21![Multiple Airlines logo]()
$868
Best flights from Los Angeles to SidneyDiscover carefully curated flight deals from Los Angeles to Sidney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
Discover carefully curated flight deals from Los Angeles to Sidney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 22, 2026.
This KAYAK deal was found by Cheapflights users on 9/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:00 am -
2 stops28h 22m
Sat 12/191:04 pm -
2 stops8h 15m
Deal found 9/22![Multiple Airlines logo]()
$604
This United deal was found by Cheapflights users on 9/22. 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.
Sun 10/117:00 am -
2 stops30h 16m
Thu 10/159:25 am -
2 stops14h 25m
Deal found 9/22![Multiple Airlines logo]()
$747
This Expedia deal was found by Cheapflights users on 9/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:59 pm -
2 stops14h 59m
Sat 10/101:04 pm -
2 stops8h 41m
Deal found 9/21![Multiple Airlines logo]()
$868
Last-minute flights from Los Angeles to SidneyDiscover last-minute flight deals from Los Angeles to Sidney. Data last updated September 22, 2026 and is based on user searches.
Discover last-minute flight deals from Los Angeles to Sidney. Data last updated September 22, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 9/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/64:59 pm -
2 stops14h 59m
Sat 10/101:04 pm -
2 stops8h 41m
Deal found 9/21![Multiple Airlines logo]()
$868
This United deal was found by Cheapflights users on 9/22. 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.
Sun 10/117:00 am -
2 stops30h 16m
Thu 10/159:25 am -
2 stops14h 25m
Deal found 9/22![Multiple Airlines logo]()
$747
Find flight deals from Los Angeles to Sidney
Discover tips and strategies to find the most affordable flight options for your journey from Los Angeles (LAX) to Sidney (SDY). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 22, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $473 (Expedia) |
Cheapflights Fare Finder
Customize your flight search to find flights from Los Angeles 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 7,457,451 searches. Data last updated September 22, 2026.
Use the filters below to find and compare flights from Los Angeles to Sidney that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Los AngelesSidney
LAX Los Angeles - SDY Sidney Richland Municipal
LAXSDY
Los Angeles
Tue 12/1
7:00 am-12:22 pm
2 stops28h 22m
Sidney Richland Municipal
Sat 12/19
1:04 pm-8:19 pm
2 stops8h 15m
$604
Los AngelesSidney
LAX Los Angeles - SDY Sidney Richland Municipal
LAXSDY
Los Angeles
Sun 10/11
7:00 am-2:16 pm
2 stops30h 16m
Sidney Richland Municipal
Thu 10/15
9:25 am-10:50 pm
2 stops14h 25m
$747
Quickest round-trip
Los AngelesSidney
LAX Los Angeles - SDY Sidney Richland Municipal
LAXSDY
Los Angeles
Tue 10/6
4:59 pm-8:58 am
2 stops14h 59m
Sidney Richland Municipal
Sat 10/10
1:04 pm-8:45 pm
2 stops8h 41m
$868
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Los Angeles-Sidney, Montana flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Los Angeles-Sidney, Montana flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Los Angeles-Sidney, Montana flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Los Angeles-Sidney, Montana flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Los Angeles-Sidney, Montana flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Los Angeles to Sidney
Have a flexible travel schedule? Discover the best time to fly to Sidney from Los Angeles with our price prediction graph.
LAX-SDY
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.
Related info for your journey
Find useful and relevant information for your journey from Los Angeles to Sidney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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