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Helena

$319+ Cheap flights from Sioux Falls to Helena (FSD - 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 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Sioux Falls to Helena

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to Helena (HLN). 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 September 11, 2025.

Round-trip from

$319
(United Airlines)
From Sioux Falls Joe Foss Field to Helena
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Find flight deals from Sioux Falls to Helena

Cheapest flights from Sioux Falls to Helena
Explore the most affordable flight options available from Sioux Falls to Helena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 9/209:25 amFSD - HLN
1 stop7h 39mUnited Airlines
Wed 9/245:20 pmHLN - FSD
1 stop5h 20mUnited Airlines
Deal found 9/10$354
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 9/209:25 amFSD - HLN
1 stop7h 39mUnited Airlines
Mon 9/225:20 pmHLN - FSD
1 stop5h 20mUnited Airlines
Deal found 9/10$379
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 9/2011:20 amFSD - HLN
2 stops11h 54mUnited Airlines
Tue 9/235:20 pmHLN - FSD
1 stop5h 20mUnited Airlines
Deal found 9/10$384
This United Airlines deal was found by Cheapflights users on 9/10. 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 9/189:16 amFSD - HLN
1 stop5h 14mUnited Airlines
Tue 9/235:20 pmHLN - FSD
1 stop5h 20mUnited Airlines
Deal found 9/10$469
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/195:06 pmFSD - HLN
1 stop5h 05mUnited Airlines
Wed 9/245:20 pmHLN - FSD
1 stop5h 20mUnited Airlines
Deal found 9/10$488
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/195:06 pmFSD - HLN
1 stop5h 05mUnited Airlines
Tue 9/235:20 pmHLN - FSD
1 stop5h 20mUnited Airlines
Deal found 9/10$513
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 9/2011:20 amFSD - HLN
2 stops11h 54mUnited Airlines
Sun 9/216:30 amHLN - FSD
1 stop5h 15mUnited Airlines
Deal found 9/10$518
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Fri 9/195:06 pmFSD - HLN
1 stop5h 05mUnited Airlines
Sun 9/216:30 amHLN - FSD
1 stop5h 15mUnited Airlines
Deal found 9/10$647

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sioux Falls 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 11, 2025.
Use the filters below to find and compare flights from Sioux Falls to Helena that are best for you.

Fly from

Sioux Falls

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-8:46 pm

1 stop5h 16m

$319

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

$598

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Best time to book a flight from Sioux Falls to Helena

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

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

Currently, February is the cheapest month in which you can book a flight from Sioux Falls to Helena (average of $353). Flying from Sioux Falls 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.

Reviews of airlines servicing Helena

Get insights into the airlines that provide service to Helena. 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 Helena. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with United Airlines from Sioux Falls to Helena to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to Helena. 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 Sioux Falls to Helena?

    A quick flight from Sioux Falls to Helena can take about 5h 13m. United Airlines provides one of the quickest options available for as low as $319. Sioux Falls and Helena are separated by a distance of 770 mi.

  • What is the cheapest airline to fly from Sioux Falls to Helena round-trip?

    Our cheapest airline available from Sioux Falls to Helena is United Airlines. Our recent data shows that you can find tickets from as low as $278 on this airline.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Sioux Falls to Helena (average of $353). Flying from Sioux Falls 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

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Sioux Falls to Helena

Discover the top airline that operate flights from Sioux Falls 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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$278Average$463FlexibilityNo cancel feeOn-time69%

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