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Helena

$319+ Cheap flights from South Dakota to Helena (HLN)

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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — HLN
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from South Dakota to Helena

Keep the following information in mind while searching for South Dakota to Helena flight deals. Data was last updated September 16, 2025.

Round-trip from

$319
(United Airlines)
From South Dakota to Helena
Search Deals

Find flight deals from South Dakota to Helena

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

This United Airlines deal was found by Cheapflights users on 9/14. 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 10/139:30 amFSD - HLN
1 stop5h 39mUnited Airlines
Tue 10/145:18 pmHLN - FSD
1 stop4h 57mUnited Airlines
Deal found 9/14$477
This United Airlines deal was found by Cheapflights users on 9/14. 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 9/1511:44 amFSD - HLN
1 stop5h 20mUnited Airlines
Tue 9/166:30 amHLN - FSD
1 stop5h 15mUnited Airlines
Deal found 9/14$899
This United Airlines deal was found by Cheapflights users on 9/14. 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 9/159:16 amFSD - HLN
1 stop5h 14mUnited Airlines
Wed 9/176:30 amHLN - FSD
2 stops9h 57mUnited Airlines
Deal found 9/14$963
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/135:20 amFSD - HLN
2 stops8h 00mDelta
Tue 10/145:45 amHLN - FSD
2 stops12h 31mDelta
Deal found 9/14$1,490

Cheapflights Fare Finder

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

Fly from

South Dakota

Fly to

Helena

Route

Depart

Return

Price

Sioux FallsHelena

FSD - HLN

FSDHLN

Sioux Falls Joe Foss Field

Sat 2/21

9:14 am-1:27 pm

1 stop5h 13m

Helena

Wed 2/25

2:30 pm-8:39 pm

1 stop5h 09m

$319

Sioux FallsHelena

FSD - HLN

FSDHLN

Sioux Falls Joe Foss Field

Mon 10/13

9:30 am-2:09 pm

1 stop5h 39m

Helena

Tue 10/14

5:18 pm-11:15 pm

1 stop4h 57m

$477

Sioux FallsHelena

FSD - HLN

FSDHLN

Sioux Falls Joe Foss Field

Sat 2/21

1:20 pm-10:38 pm

2 stops10h 18m

Helena

Wed 2/25

5:35 am-7:18 pm

2 stops12h 43m

$558

Sioux FallsHelena

FSD - HLN

FSDHLN

Sioux Falls Joe Foss Field

Mon 10/13

5:20 am-12:20 pm

2 stops8h 00m

Helena

Tue 10/14

5:45 am-7:16 pm

2 stops12h 31m

$1,490

Sioux FallsHelena

FSD - HLN

FSDHLN

Sioux Falls Joe Foss Field

Sun 9/21

11:44 am-4:04 pm

1 stop5h 20m

$439

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Best time to book a flight from South Dakota to Helena

Have a flexible travel schedule? Discover the best time to fly to Helena from South Dakota 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 South Dakota to Helena

What is the cheapest month to book a flight from South Dakota to Helena?

Currently, February is the cheapest month in which you can book a flight from South Dakota to Helena (average of $353). Flying from South Dakota to Helena in May is currently the most expensive (average of $517). 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 South Dakota to Helena. 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 into for flights to Helena from South Dakota?

    For a flight from South Dakota to Helena, you will be flying into Helena. Helena (HLN) is just 2.7 mi from the center of the city.

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

    Airlines like United Airlines fly from South Dakota to Helena in about 5h 13m. The time it takes to get you to your destination can typically vary by up to . The distance from South Dakota to Helena is about 770 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from South Dakota to Helena 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 South Dakota to Helena?

    Currently, February is the cheapest month in which you can book a flight from South Dakota to Helena (average of $353). Flying from South Dakota to Helena in May is currently the most expensive (average of $517). 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

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Top airline flying from South Dakota to Helena

Discover the top airline that operate flights from South Dakota to Helena. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$278Average$463FlexibilityNo cancel feeOn-time69%

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