Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Helena to Sioux Falls from $300

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Helena to Sioux Falls departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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
2:34 pm - 8:15 pm
HLN
-
FSD
4h 41m
1 stop
United Airlines Logo
5:05 pm - 9:39 pm
FSD
-
HLN
5h 34m
1 stop
$389United Airlines
Tue, Nov 10 - Sat, Nov 14
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
9:35 am - 1:49 pm
FSD
-
HLN
5h 14m
1 stop
$434United Airlines
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
2:34 pm - 8:15 pm
HLN
-
FSD
4h 41m
1 stop
United Airlines Logo
11:20 am - 9:39 pm
FSD
-
HLN
11h 19m
2 stops
$527United Airlines
Tue, Nov 10 - Sat, Nov 14
United Airlines Logo
2:30 pm - 8:20 pm
HLN
-
FSD
4h 50m
1 stop
United Airlines Logo
11:20 am - 9:39 pm
FSD
-
HLN
11h 19m
2 stops
$572United Airlines
Sat, Oct 24 - Wed, Oct 28
United Airlines Logo
2:34 pm - 9:45 pm
HLN
-
FSD
30h 11m
3 stops
United Airlines Logo
5:05 pm - 9:39 pm
FSD
-
HLN
5h 34m
1 stop
$645United Airlines
Tue, Nov 10 - Sat, Nov 14
United Airlines Logo
6:25 am - 5:56 pm
HLN
-
FSD
10h 31m
2 stops
United Airlines Logo
11:20 am - 9:39 pm
FSD
-
HLN
11h 19m
2 stops
$793United Airlines
Sat, Oct 24 - Wed, Oct 28

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

United Airlines flights from Helena to Sioux Falls

Our best United Airlines deals on Helena to Sioux Falls flight tickets
United Airlines
Nov 10
HLN2:34 pmHelena
4h 41m
1 stop
FSD8:15 pmSioux Falls Joe Foss Field
Nov 14
FSD5:05 pmSioux Falls Joe Foss Field
5h 34m
1 stop
HLN9:39 pmHelena
$389
United Airlines
Oct 24
HLN2:30 pmHelena
4h 50m
1 stop
FSD8:20 pmSioux Falls Joe Foss Field
Oct 28
FSD9:35 amSioux Falls Joe Foss Field
5h 14m
1 stop
HLN1:49 pmHelena
$434
United Airlines
Nov 10
HLN2:34 pmHelena
4h 41m
1 stop
FSD8:15 pmSioux Falls Joe Foss Field
Nov 14
FSD11:20 amSioux Falls Joe Foss Field
11h 19m
2 stops
HLN9:39 pmHelena
$527

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 July 4, 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 11/10

2:34 pm-8:15 pm

1 stop4h 41m

Sioux Falls Joe Foss Field

Sat 11/14

5:05 pm-9:39 pm

1 stop5h 34m

$389
Quickest round-trip

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 10/24

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Wed 10/28

9:35 am-1:49 pm

1 stop5h 14m

$434

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 11/10

2:34 pm-8:15 pm

1 stop4h 41m

Sioux Falls Joe Foss Field

Sat 11/14

11:20 am-9:39 pm

2 stops11h 19m

$527

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 10/24

2:30 pm-8:20 pm

1 stop4h 50m

Sioux Falls Joe Foss Field

Wed 10/28

11:20 am-9:39 pm

2 stops11h 19m

$572

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 11/10

2:34 pm-9:45 pm

3 stops30h 11m

Sioux Falls Joe Foss Field

Sat 11/14

5:05 pm-9:39 pm

1 stop5h 34m

$645

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Sat 10/24

6:25 am-5:56 pm

2 stops10h 31m

Sioux Falls Joe Foss Field

Wed 10/28

11:20 am-9:39 pm

2 stops11h 19m

$793
Cheapest one-way
Quickest one-way

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 8/4

6:15 am-12:15 pm

1 stop5h 00m

$300

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 8/4

12:55 pm-10:51 pm

2 stops8h 56m

$465

HelenaSioux Falls

HLN - FSD

HLNFSD

Helena

Tue 8/4

5:09 pm-7:23 pm

3 stops25h 14m

$742

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 41m

Direct flights

None
The fastest flight from Helena to Sioux Falls takes 4h 41m
There are no direct flights from Helena to Sioux Falls. There are no popular flight routes from Helena to Sioux Falls.
Search flight deals

Frequently asked questions about flying from Helena to Sioux Falls

  • 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 41m 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.

Frequently asked questions about flying from Helena to Sioux Falls

  • 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.

An easier way to manage your Sioux Falls trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 8/3
Mon 8/10
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States