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South Dakota

$389+ Cheap flights from Helena (HLN) to South Dakota

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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — FSD
Jul 15 — Jul 221
Wed 7/15
Wed 7/22
1 adult, Economy
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Cheap flight deals from Helena to South Dakota

Cheapest flights from Helena to South Dakota
Explore the most affordable flight options available from Helena to South Dakota. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 15, 2026.

This United Airlines deal was found by Cheapflights users on 6/14. 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.
Tue 10/272:30 pm
HLN
-
FSD
1 stop5h 16m
United Airlines
Sat 10/319:14 am
FSD
-
HLN
1 stop5h 13m
United Airlines
Deal found 6/14$389
This United Airlines deal was found by Cheapflights users on 6/14. 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 9/212:35 pm
HLN
-
FSD
1 stop4h 32m
United Airlines
Sun 9/275:04 pm
FSD
-
HLN
1 stop5h 14m
United Airlines
Deal found 6/14$560
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 7/86:15 am
HLN
-
FSD
1 stop5h 20m
United Airlines
Wed 7/155:05 pm
FSD
-
HLN
1 stop5h 15m
United Airlines
Deal found 6/10$738
This United Airlines deal was found by Cheapflights users on 6/13. 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 6/296:15 am
HLN
-
FSD
1 stop12h 53m
United Airlines
Wed 7/86:00 am
FSD
-
HLN
1 stop16h 20m
United Airlines
Deal found 6/13$766
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 6/112:20 pm
HLN
-
FSD
1 stop4h 48m
United Airlines
Mon 6/155:05 pm
FSD
-
HLN
1 stop5h 15m
United Airlines
Deal found 6/10$780

Find flight deals from Helena to South Dakota

Keep the following information in mind while searching for Helena to South Dakota flight deals. Data was last updated June 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$389
(United Airlines)
Provider with most accurate pricing for Helena-Sioux Falls Joe Foss Field flight deals.
Search Deals
Provider most trusted by Cheapflights users for Helena-Sioux Falls Joe Foss Field flights.
Search Deals
From Helena to South Dakota
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Helena to South Dakota 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 June 15, 2026.
Use the filters below to find and compare flights from Helena to South Dakota that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 10/27

2:30 pm-8:46 pm

1 stop5h 16m

Sioux Falls Joe Foss Field

Sat 10/31

9:14 am-1:27 pm

1 stop5h 13m

$389

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Wed 7/8

6:15 am-12:35 pm

1 stop5h 20m

Sioux Falls Joe Foss Field

Wed 7/15

5:05 pm-9:20 pm

1 stop5h 15m

$738

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Mon 9/21

6:15 am-11:12 pm

2 stops15h 57m

Sioux Falls Joe Foss Field

Sun 9/27

5:04 pm-9:18 pm

1 stop5h 14m

$741

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Mon 6/29

6:15 am-10:23 am

1 stop27h 08m

Sioux Falls Joe Foss Field

Wed 7/8

5:05 pm-9:20 pm

1 stop5h 15m

$767
Cheapest one-way
Quickest one-way

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 6/23

6:15 am-12:15 pm

1 stop5h 00m

$419

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

Sorted by cheapest first

Best time to book a flight from Helena to South Dakota

Have a flexible travel schedule? Discover the best time to fly to South Dakota 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 South Dakota
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing South Dakota

Get insights into the airlines that provide service to South Dakota. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to South Dakota. Reviews last updated June 15, 2026.
Get a feel of what it's like to fly with United Airlines from Helena to South Dakota by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,831 reviews

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,831 reviews
United Airlines
7.4
Good
9,831 reviews

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

Find useful and relevant information for your journey from Helena to South Dakota. 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 from for flights from Helena to South Dakota?

    Most people fly from Helena (HLN) if they book a flight from Helena to South Dakota. Helena is conveniently located just 2.7 mi from Helena’s city center.

  • How long is the flight from Helena to South Dakota?

    A quick flight from Helena to South Dakota can take about 5h 16m. United Airlines provides one of the quickest options available for as low as $389. The distance from Helena to South Dakota is about 770 mi.

  • Can I find deals for flights from Helena to South Dakota that include hotel bookings?

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

  • How can I find direct flights from Helena to South Dakota?

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

  • Can I find deals for business class flights from Helena to South Dakota?

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

See more FAQs

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Top airline flying from Helena to South Dakota

Discover the top airline that operate flights from Helena to South Dakota. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$248Average$288FlexibilityNo cancel feeOn-time69%

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