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Cheap flights from Helena to Sioux Falls from $439

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to Sioux Falls departing on 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Helena to Sioux Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
5:05 pm - 9:20 pm
FSD
-
HLN
5h 15m
1 stop
$439United Airlines
Tue, May 12 - Mon, May 25
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
9:30 am - 1:33 pm
FSD
-
HLN
5h 03m
1 stop
$454United Airlines
Tue, May 12 - Sun, May 24
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
5:05 pm - 9:20 pm
FSD
-
HLN
5h 15m
1 stop
$466United Airlines
Tue, May 12 - Mon, May 25
Delta Logo
1:04 pm - 11:02 pm
HLN
-
FSD
8h 58m
2 stops
Delta Logo
5:00 am - 12:24 pm
FSD
-
HLN
8h 24m
2 stops
$479Delta
Wed, Apr 15 - Sun, Apr 19
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
9:30 am - 1:33 pm
FSD
-
HLN
5h 03m
1 stop
$503United Airlines
Wed, May 13 - Sun, May 24
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
9:30 am - 1:33 pm
FSD
-
HLN
5h 03m
1 stop
$532United Airlines
Tue, May 12 - Tue, May 26
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
5:05 pm - 9:20 pm
FSD
-
HLN
5h 15m
1 stop
$534United Airlines
Tue, May 12 - Sun, May 24
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
5:05 pm - 9:20 pm
FSD
-
HLN
5h 15m
1 stop
$548United Airlines
Wed, May 13 - Mon, May 25
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
9:30 am - 1:33 pm
FSD
-
HLN
5h 03m
1 stop
$567United Airlines
Tue, May 12 - Tue, May 26
United Airlines Logo
2:25 pm - 11:44 pm
HLN
-
FSD
8h 19m
1 stop
United Airlines Logo
9:05 am - 1:39 pm
FSD
-
HLN
5h 34m
1 stop
$573United Airlines
Wed, Apr 15 - Sun, Apr 19

United Airlines flights from Helena to Sioux Falls

Our best United Airlines deals on Helena to Sioux Falls flight tickets
United Airlines
May 12
HLN2:30 pmHelena
4h 50m
1 stop
FSD8:20 pmSioux Falls Joe Foss Field
May 25
FSD5:05 pmSioux Falls Joe Foss Field
5h 15m
1 stop
HLN9:20 pmHelena
$439
United Airlines
May 12
HLN2:30 pmHelena
4h 50m
1 stop
FSD8:20 pmSioux Falls Joe Foss Field
May 24
FSD9:30 amSioux Falls Joe Foss Field
5h 03m
1 stop
HLN1:33 pmHelena
$454
United Airlines
May 12
HLN2:30 pmHelena
4h 50m
1 stop
FSD8:20 pmSioux Falls Joe Foss Field
May 25
FSD5:05 pmSioux Falls Joe Foss Field
5h 15m
1 stop
HLN9:20 pmHelena
$466

Delta flights from Helena to Sioux Falls

Our best Delta deals on Helena to Sioux Falls flight tickets
Delta
Apr 15
HLN1:04 pmHelena
8h 58m
2 stops
FSD11:02 pmSioux Falls Joe Foss Field
Apr 19
FSD5:00 amSioux Falls Joe Foss Field
8h 24m
2 stops
HLN12:24 pmHelena
$479
Delta
May 12
HLN5:45 amHelena
16h 26m
2 stops
FSD11:11 pmSioux Falls Joe Foss Field
May 25
FSD8:19 amSioux Falls Joe Foss Field
15h 14m
2 stops
HLN10:33 pmHelena
$607
Delta
May 12
HLN5:45 amHelena
12h 42m
2 stops
FSD7:27 pmSioux Falls Joe Foss Field
May 25
FSD8:19 amSioux Falls Joe Foss Field
15h 14m
2 stops
HLN10:33 pmHelena
$668

momondo 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, momondo users made 832,500 searches. Data last updated April 1, 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

Tue 5/12

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Mon 5/25

5:05 pm-9:20 pm

1 stop5h 15m

$439
Quickest round-trip

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 5/12

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Sun 5/24

9:30 am-1:33 pm

1 stop5h 03m

$454

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 5/12

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Mon 5/25

5:05 pm-9:20 pm

1 stop5h 15m

$466

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Wed 4/15

1:04 pm-11:02 pm

2 stops8h 58m

Sioux Falls Joe Foss Field

Sun 4/19

5:00 am-12:24 pm

2 stops8h 24m

$479

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Wed 5/13

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Sun 5/24

9:30 am-1:33 pm

1 stop5h 03m

$503

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 5/12

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Tue 5/26

9:30 am-1:33 pm

1 stop5h 03m

$532

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 5/12

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Sun 5/24

5:05 pm-9:20 pm

1 stop5h 15m

$534

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Wed 5/13

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Mon 5/25

5:05 pm-9:20 pm

1 stop5h 15m

$548

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 5/12

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Tue 5/26

9:30 am-1:33 pm

1 stop5h 03m

$567

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Wed 4/15

2:25 pm-11:44 pm

1 stop8h 19m

Sioux Falls Joe Foss Field

Sun 4/19

9:05 am-1:39 pm

1 stop5h 34m

$573

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Helena to Sioux Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Helena to Sioux Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Helena to Sioux Falls (HLN to FSD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to Sioux Falls

Fastest flight time

4h 50m

Direct flights

None
The fastest flight from Helena to Sioux Falls takes 4h 50m
There are no direct flights from Helena to Sioux Falls. There are no popular flight routes from Helena to Sioux Falls.
Search flight deals

  • How far is Helena to Sioux Falls Joe Foss Field by plane?

    A flight from Helena to Sioux Falls Joe Foss Field will travel around 774.0 mi. 4h 50m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Helena Airport to Sioux Falls Joe Foss Field Airport?

    Prices for flights from Helena Airport to Sioux Falls Joe Foss Field Airport were last updated today.

  • How old do you have to be to fly from Helena Airport to Sioux Falls Joe Foss Field Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Helena Airport to Sioux Falls Joe Foss Field Airport.

  • What documentation or ID do you need to fly to Sioux Falls Joe Foss Field Airport?

    The travel and health documents you'll need for your trip to Sioux Falls Joe Foss Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sioux Falls Joe Foss Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Helena to Sioux Falls?

    Confirm your travel details to search for the latest offers for flights from Helena to Sioux Falls. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Helena to Sioux Falls with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Sioux Falls?

Book flights to Sioux Falls if you plan to visit one of these locations
Yankton
Marshall
Worthington

Why use momondo?

Why should I use momondo to find a flight deal from Helena to Sioux Falls?

It is quick and easy to find Helena to Sioux Falls flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sioux Falls that suits you.

Can I find flights from Helena to Sioux Falls with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Sioux Falls from Helena with this policy.

How can momondo help me find flights from Helena to Sioux Falls?

momondo helps you find the best flight between Helena and Sioux Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Helena to Sioux Falls right now. Can momondo alert me if prices change?

Price alerts on flights to Sioux Falls from Helena are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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