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Sioux Falls

$274+ Cheap flights from Helena to Sioux Falls (HLN - FSD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — FSD
Aug 29 — Sep 51
Sat 8/29
Sat 9/5
1 adult, Economy
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Cheap 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 July 30, 2026.

This United Airlines deal was found by Cheapflights users on 7/25. 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.
Sat 8/222:35 pm
HLN
-
FSD
1 stop4h 32m
United Airlines
Sat 8/295:05 pm
FSD
-
HLN
1 stop5h 25m
United Airlines
Deal found 7/25$319
This United Airlines deal was found by Cheapflights users on 7/28. 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 8/132:35 pm
HLN
-
FSD
1 stop4h 32m
United Airlines
Mon 8/175:05 pm
FSD
-
HLN
1 stop5h 25m
United Airlines
Deal found 7/28$369
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Fri 9/42:35 pm
HLN
-
FSD
1 stop4h 32m
United Airlines
Mon 9/75:05 pm
FSD
-
HLN
1 stop5h 25m
United Airlines
Deal found 7/28$399
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/16:15 am
HLN
-
FSD
1 stop5h 24m
United Airlines
Sat 9/59:35 am
FSD
-
HLN
1 stop5h 10m
United Airlines
Deal found 7/28$419
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/32:35 pm
HLN
-
FSD
1 stop4h 32m
United Airlines
Mon 9/75:05 pm
FSD
-
HLN
1 stop5h 25m
United Airlines
Deal found 7/28$427
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Sat 9/192:26 pm
HLN
-
FSD
1 stop4h 41m
United Airlines
Tue 9/229:35 am
FSD
-
HLN
1 stop5h 10m
United Airlines
Deal found 7/26$465
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Sat 11/146:28 am
HLN
-
FSD
1 stop5h 07m
United Airlines
Tue 11/1711:14 am
FSD
-
HLN
2 stops11h 17m
United Airlines
Deal found 7/25$478

Find 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 July 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(United Airlines)

One-way from

$274
(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 Sioux Falls Joe Foss Field
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One-way flight from Helena to Sioux Falls Joe Foss Field
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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 July 30, 2026.
Use the filters below to find and compare flights from Helena to Sioux Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 8/22

2:35 pm-8:07 pm

1 stop4h 32m

Sioux Falls Joe Foss Field

Sat 8/29

5:05 pm-9:30 pm

1 stop5h 25m

$319

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 9/1

6:15 am-12:39 pm

1 stop5h 24m

Sioux Falls Joe Foss Field

Sat 9/5

9:35 am-1:45 pm

1 stop5h 10m

$399

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 11/14

2:23 pm-8:04 pm

1 stop4h 41m

Sioux Falls Joe Foss Field

Tue 11/17

5:06 pm-9:31 pm

1 stop5h 25m

$399

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Thu 9/3

2:35 pm-8:07 pm

1 stop4h 32m

Sioux Falls Joe Foss Field

Mon 9/7

5:05 pm-9:30 pm

1 stop5h 25m

$427
Quickest round-trip

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 9/19

2:26 pm-8:07 pm

1 stop4h 41m

Sioux Falls Joe Foss Field

Tue 9/22

9:35 am-1:45 pm

1 stop5h 10m

$465
Cheapest one-way

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 9/12

6:15 am-12:39 pm

1 stop5h 24m

$274
Quickest one-way

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Wed 9/23

2:26 pm-8:07 pm

1 stop4h 41m

$343

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 9/12

12:57 pm-10:51 pm

2 stops8h 54m

$398

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Wed 9/23

12:57 pm-10:51 pm

2 stops8h 54m

$475

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Thu 10/8

2:30 pm-8:20 pm

1 stop4h 50m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Sorted by cheapest first
  • 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.

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 4h 32m. 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.

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
Yankton

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