How long is the flight from Helena to Sioux Falls?

Airlines like United Airlines fly from Helena to Sioux Falls in about 4h 48m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 770 mi.

In terms of precipitation, rainfall in Sioux Falls ranges from 0.6 - 3.9 inches per month. June is typically the wettest month, when rainfall can reach 3.9 in. January is typically the driest time to visit Sioux Falls when rainfall is around 0.6 in.

If weather is an important factor for your trip to Sioux Falls, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

What is the cheapest time of day to fly from HLN to FSD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Helena to Sioux Falls as you normally would.

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.

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.

$573+ Cheap Flights from Helena to Sioux Falls

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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 12, 2026.

Fri 8/72:20 pm

HLN

FSD

1 stop4h 48m

United Airlines

Fri 8/145:05 pm

FSD

HLN

1 stop5h 25m

United Airlines

Deal found 7/8

$573

Find flight deals from Helena to Sioux Falls

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$573 (United Airlines)

Provider with most accurate pricing for Helena-Sioux Falls Joe Foss Field flight deals.

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From Helena to Sioux Falls Joe Foss Field

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HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Fri 8/7

2:20 pm-8:08 pm

1 stop4h 48m

Sioux Falls Joe Foss Field

Fri 8/14

5:05 pm-9:30 pm

1 stop5h 25m

$573

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/8

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.

HLN-FSD

Estimated round-trip price

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Related info for your journey

How long is the flight from Helena to Sioux Falls?
Airlines like United Airlines fly from Helena to Sioux Falls in about 4h 48m. 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.

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$573+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Helena to Sioux Falls with Cheapflights

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Cheap flight deals from Helena to Sioux Falls

Cheapest flights from Helena to Sioux FallsExplore 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 12, 2026.

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 12, 2026.

Best flights from Helena to Sioux FallsDiscover carefully curated flight deals from Helena to Sioux Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 12, 2026.

Discover carefully curated flight deals from Helena to Sioux Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 12, 2026.

Last-minute flights from Helena to Sioux FallsDiscover last-minute flight deals from Helena to Sioux Falls. Data last updated July 12, 2026 and is based on user searches.

Discover last-minute flight deals from Helena to Sioux Falls. Data last updated July 12, 2026 and is based on user searches.

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Best time to book a flight from Helena to Sioux Falls

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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?

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

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

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

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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 12, 2026.

Best flights from Helena to Sioux Falls
Discover carefully curated flight deals from Helena to Sioux Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 12, 2026.

Last-minute flights from Helena to Sioux Falls
Discover last-minute flight deals from Helena to Sioux Falls. Data last updated July 12, 2026 and is based on user searches.