HLN - SDF

$339 Find Cheap Flights from Helena to Louisville

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Helena to Louisville departing on 1/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Helena to Louisville, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$339
United Airlines
Thu 1/29Mon 2/2
HLN - SDF • 1 stop
Cheapest one-way
$395
United Airlines
Thu 1/29
HLN - SDF • 1 stop
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Helena to Louisville (HLN-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Helena to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Helena to Louisville

Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
2:27 pm - 10:24 pm
HLN
-
SDF
5h 57m
1 stop
United Airlines Logo
3:22 pm - 9:26 pm
SDF
-
HLN
8h 04m
1 stop
$339United Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
6:15 am - 2:26 pm
HLN
-
SDF
6h 11m
1 stop
United Airlines Logo
11:10 am - 9:26 pm
SDF
-
HLN
12h 16m
2 stops
$344United Airlines
Thu, Jan 29 - Mon, Feb 2
United Airlines Logo
6:15 am - 11:23 pm
HLN
-
SDF
15h 08m
2 stops
United Airlines Logo
5:35 am - 1:41 pm
SDF
-
HLN
10h 06m
2 stops
$350United Airlines
Booking Insights

KAYAK's insights & trends for Helena to Louisville flights

Get data-powered insights and trends into flights from Helena to Louisville to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Helena and Louisville?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Helena to Louisville.

There is just one airline that flies from Helena to Louisville direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is $249.

Find deals

Good to know

Cheapest flight$339
Flight from Helena to Louisville

When to book flights from Helena to Louisville

Are your dates flexible? Find out the best times to travel from Helena to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Helena to Louisville

  • What is the cheapest flight from Helena to Louisville?

    In the last 3 days, the lowest price for a flight from Helena to Louisville was $395 for a one-way ticket and $339 for a round-trip.

  • Do I need a passport to fly between Helena and Louisville?

    No, a passport isn't needed to fly from Helena to Louisville. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Helena to Louisville?

    Helena and Louisville are both served by 1 main airport. You will leave Helena from Helena and will be arriving at Louisville Intl.

  • Which aircraft models fly most regularly from Helena to Louisville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Helena to Louisville?

    Star Alliance is the only airline alliance operating flights between Helena and Louisville.

  • How does KAYAK find such low prices on flights from Helena to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Helena to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Helena to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Helena is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Helena to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Helena with another airline. Booking your flights between Helena and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Helena to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Helena up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Helena to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Helena to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Helena to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9156 reviews
7.1Entertainment
8.1Crew
6.6Food
7.7Boarding
7.3Comfort
Airline reviews

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

10.0 ExcellentDavid, Jan 2026
IAD - BNA
Read more United Airlines reviews

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

Everything you need to know for your flight from Helena to Louisville

Information on your arrival and departure airports

Helena (HLN)
Louisville (SDF)