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$319+ Cheap flights from Helena to Sioux Falls (HLN - FSD)

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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — FSD
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Cheap flight deals from Helena to Sioux Falls

Discover tips and strategies to find the most affordable flight options for your journey from Helena (HLN) to Sioux Falls (FSD). 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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(United Airlines)
Provider with most accurate pricing for Helena-Sioux Falls Joe Foss Field flight deals.
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Provider most trusted by Cheapflights users for Helena-Sioux Falls Joe Foss Field flights.
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From Helena to Sioux Falls Joe Foss Field
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Find flight deals from Helena to Sioux Falls

Cheapest flights from Helena to Sioux Falls
Explore the most affordable flight options available from Helena to Sioux Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This United Airlines deal was found by Cheapflights users on 10/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:18 pmHLN - FSD
1 stop4h 57mUnited Airlines
Wed 10/2211:52 amFSD - HLN
1 stop5h 48mUnited Airlines
Deal found 10/15$824
This United Airlines deal was found by Cheapflights users on 10/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/195:18 pmHLN - FSD
1 stop4h 57mUnited Airlines
Wed 10/228:00 amFSD - HLN
2 stops9h 40mUnited Airlines
Deal found 10/15$893
This United Airlines deal was found by Cheapflights users on 10/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/195:18 pmHLN - FSD
1 stop4h 57mUnited Airlines
Tue 10/219:30 amFSD - HLN
1 stop5h 39mUnited Airlines
Deal found 10/15$899
This Delta deal was found by Cheapflights users on 10/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/195:45 amHLN - FSD
2 stops8h 59mDelta
Tue 10/215:20 amFSD - HLN
2 stops8h 00mDelta
Deal found 10/15$909
This Delta deal was found by Cheapflights users on 10/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/201:00 pmHLN - FSD
2 stops8h 57mDelta
Tue 10/215:20 amFSD - HLN
2 stops8h 00mDelta
Deal found 10/15$949
This Delta deal was found by Cheapflights users on 10/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/195:45 amHLN - FSD
2 stops8h 59mDelta
Wed 10/225:20 amFSD - HLN
2 stops8h 00mDelta
Deal found 10/16$968
This Delta deal was found by Cheapflights users on 10/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/201:00 pmHLN - FSD
2 stops8h 57mDelta
Wed 10/225:20 amFSD - HLN
2 stops8h 00mDelta
Deal found 10/16$1,008

Cheapflights Fare Finder

 
Customize your flight search to find flights from Helena to Sioux Falls 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 October 16, 2025.
Use the filters below to find and compare flights from Helena to Sioux Falls that are best for you.

Fly from

Helena

Fly to

Sioux Falls

Route

Depart

Return

Price

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 3/7

2:30 pm-8:38 pm

1 stop5h 08m

Sioux Falls Joe Foss Field

Wed 3/11

9:00 am-1:27 pm

1 stop5h 27m

$319

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 3/7

12:50 pm-10:58 pm

2 stops9h 08m

Sioux Falls Joe Foss Field

Wed 3/11

1:20 pm-10:38 pm

2 stops10h 18m

$789

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Compare providers for flights from Helena to Sioux Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Helena to Sioux Falls in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Helena-Sioux Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Helena-Sioux Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Helena-Sioux Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Helena-Sioux Falls flights, Cheapflights users trust FlightHub the most. FlightHub 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 Helena-Sioux Falls 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 Helena to Sioux Falls

Have a flexible travel schedule? Discover the best time to fly to Sioux Falls from Helena 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 Helena to Sioux Falls

What is the cheapest month to book a flight from Helena to Sioux Falls?

Currently, June is the cheapest month in which you can book a flight from Helena to Sioux Falls (average of $146). Flying from Helena to Sioux Falls in January is currently the most expensive (average of $403). 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 Helena to Sioux Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Helena to Sioux Falls?

    Airlines like United Airlines fly from Helena to Sioux Falls in about 5h 08m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 770 mi.

  • Can I find deals for flights from Helena to Sioux Falls that include hotel bookings?

    Yes. In addition to deals on Helena to Sioux Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Helena to Sioux Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Helena to Sioux Falls.

  • Can I find deals for business class flights from Helena to Sioux Falls?

    Yes. Cheapflights offers flight deals from Helena to Sioux Falls 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 Helena to Sioux Falls?

    Currently, June is the cheapest month in which you can book a flight from Helena to Sioux Falls (average of $146). Flying from Helena to Sioux Falls in January is currently the most expensive (average of $403). 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

Traveling to a place near Sioux Falls?

Book flights to Sioux Falls if you plan to visit one of these locations
Marshall

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