HLN - FSD

$369 Find Cheap Flights from Helena to Sioux Falls - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$369
Typical prices: $406-$529
United Airlines
Tue 10/2Thu 10/4
HLN - FSD • 1 stop
When to travel
October
Cheapest • 30% price drop
April
Most popular
Good to know
+1
Good to know
+1
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Flight Deals

Cheap Flights from Helena to Sioux Falls (HLN-FSD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Helena to Sioux Falls

Fri, Oct 2 - Sun, Oct 4
United Airlines Logo
2:30 pm - 8:20 pmHLN  Helena-FSD Sioux Falls Joe Foss Field
4h 50m1 stop Denver Intl
United Airlines Logo
9:42 am - 1:48 pmFSD  Sioux Falls Joe Foss Field-HLN Helena
5h 06m1 stop Denver Intl
$369United Airlines
Sat, Jan 23 - Tue, Jan 26
United Airlines Logo
2:30 pm - 8:46 pmHLN  Helena-FSD Sioux Falls Joe Foss Field
5h 16m1 stop Denver Intl
United Airlines Logo
5:00 pm - 8:59 pmFSD  Sioux Falls Joe Foss Field-HLN Helena
4h 59m1 stop Denver Intl
$419United Airlines
Sat, Jan 23 - Tue, Jan 26
United Airlines Logo
2:30 pm - 8:46 pmHLN  Helena-FSD Sioux Falls Joe Foss Field
5h 16m1 stop Denver Intl
United Airlines Logo
10:00 am - 8:59 pmFSD  Sioux Falls Joe Foss Field-HLN Helena
11h 59m2 stops Chicago O'Hare Intl Denver Intl
$424United Airlines
Fri, Oct 2 - Sun, Oct 4
Delta Logo
7:15 am - 7:43 pmHLN  Helena-FSD Sioux Falls Joe Foss Field
11h 28m2 stops Salt Lake City Minneapolis St Paul
Delta Logo
5:05 am - 12:17 pmFSD  Sioux Falls Joe Foss Field-HLN Helena
8h 12m2 stops Minneapolis St Paul Salt Lake City
$1,119Delta
Booking Insights

Price, demand and travel trends for Helena to Sioux Falls flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Helena to Sioux Falls with more confidence.

How much is a round-trip flight from Helena to Sioux Falls?

Round-trip flights from Helena to Sioux Falls start at $369. Prices are below average for this route right now, with typical round-trip fares ranging from $406 to $529. The lowest price found in the past 5 days was $369 on United Airlines.

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Key details for Helena to Sioux Falls flights

Low season

January
Best time to beat the crowds with an average 8% drop in price.

When to book flights from Helena to Sioux Falls

Are your dates flexible? Find out the best times to travel from Helena to Sioux Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Helena to Sioux Falls flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • Which airports can I use when flying from Helena to Sioux Falls?

    Flights from Helena to Sioux Falls usually depart from Helena (HLN) and arrive at Sioux Falls Joe Foss Field (FSD).

  • What cabin classes can I book on flights from Helena to Sioux Falls?

    Only Economy Class is available on flights from Helena to Sioux Falls.

  • Which airports do connecting flights from Helena to Sioux Falls pass through?

    Most connecting flights from Helena to Sioux Falls pass through Denver Intl (DEN), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

  • Can I save money by using flexible dates for flights from Helena to Sioux Falls?

    Yes. Being flexible with your travel dates can save you up to 52% on the Helena to Sioux Falls route. Tuesday is the cheapest departure day at $406 round-trip on average, while Thursday is the most expensive at $830, a difference of $424. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • Do I need a passport to fly from Helena to Sioux Falls?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Helena to Sioux Falls changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $369 to $1,247. That means the highest observed fare was about 3x higher than the lowest one.

  • What is the time difference between Helena and Sioux Falls?

    Sioux Falls is 1 hour ahead of Helena (Central Time vs Mountain Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Sioux Falls Joe Foss Field Airport (FSD)?

    Sioux Falls Joe Foss Field Airport (FSD) hosts 5 major car rental companies, with daily rates starting from around $32 for economy cars. Top options include:
    • Hertz
    • Alamo
    • Enterprise Rent-A-Car
    • Budget
    • Avis

  • How much should I expect to pay for a Helena to Sioux Falls flight?

    Round-trip flights from Helena to Sioux Falls range from $406 to $529, with an average of $459 over the past 12 months. Anything below $406 counts as a good deal.

Your guide to booking Helena to Sioux Falls flights

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