HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Sioux Falls

$389+ 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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
HLN — FSD
juil. 18 — juil. 251
sam. 7/18
sam. 7/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Helena to Sioux Falls 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 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 juin 18, 2026.

This United Airlines deal was found by Cheapflights users on 6/15. 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.
mar. 10/272:30 pm
HLN
-
FSD
1 stop5h 16m
United Airlines
sam. 10/319:14 am
FSD
-
HLN
1 stop5h 13m
United Airlines
Deal found 6/15$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.
lun. 9/212:35 pm
HLN
-
FSD
1 stop4h 32m
United Airlines
dim. 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 6/17. 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.
mar. 7/72:20 pm
HLN
-
FSD
1 stop4h 48m
United Airlines
jeu. 7/95:05 pm
FSD
-
HLN
1 stop5h 15m
United Airlines
Deal found 6/17$713
This United Airlines deal was found by Cheapflights users on 6/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/296:15 am
HLN
-
FSD
1 stop5h 20m
United Airlines
mer. 7/86:00 am
FSD
-
HLN
1 stop16h 20m
United Airlines
Deal found 6/16$737

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 juin 18, 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 Sioux Falls Joe Foss Field
Search Deals

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 juin 18, 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
Quickest round-trip

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

mar. 10/27

2:30 pm-8:46 pm

1 stop5h 16m

Sioux Falls Joe Foss Field

sam. 10/31

9:14 am-1:27 pm

1 stop5h 13m

$389

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

lun. 9/21

6:15 am-11:12 pm

2 stops15h 57m

Sioux Falls Joe Foss Field

dim. 9/27

5:04 pm-9:18 pm

1 stop5h 14m

$741

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

mar. 7/7

6:15 am-5:53 pm

2 stops10h 38m

Sioux Falls Joe Foss Field

jeu. 7/9

5:05 pm-9:20 pm

1 stop5h 15m

$1,220

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

mar. 7/7

5:40 am-3:41 pm

2 stops9h 01m

Sioux Falls Joe Foss Field

jeu. 7/9

5:00 am-12:15 pm

2 stops8h 15m

$2,412
Cheapest one-way
Quickest one-way

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

mar. 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
  • 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 5h 16m. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Helena to Sioux Falls

See prices for flight routes from nearby airports that may be better suited for you.
Bozeman to Sioux Falls flights
Missoula to Sioux Falls flights
Billings to Sioux Falls flights
Bozeman to Rapid City flights
Billings to Rapid City flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.