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$351+ Cheap flights from Harlingen, TX to Louisville (HRL - SDF)

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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — SDF
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
1 adult, Economy
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Cheap flight deals from Harlingen to Louisville

Cheapest flights from Harlingen to Louisville
Explore the most affordable flight options available from Harlingen to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 20, 2026.

This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/187:00 am
HRL
-
SDF
1 stop5h 36m
United Airlines
Wed 4/226:00 am
SDF
-
HRL
1 stop6h 23m
United Airlines
Deal found 3/17$351
This American Airlines deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/302:45 pm
HRL
-
SDF
1 stop6h 53m
American Airlines
Sat 5/95:41 pm
SDF
-
HRL
1 stop6h 10m
American Airlines
Deal found 3/20$355
This American Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/214:57 pm
HRL
-
SDF
1 stop5h 22m
American Airlines
Mon 5/257:45 pm
SDF
-
HRL
1 stop5h 29m
American Airlines
Deal found 3/15$359
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:05 am
HRL
-
SDF
1 stop10h 55m
Southwest
Sat 4/45:40 pm
SDF
-
HRL
2 stops7h 15m
Southwest
Deal found 3/16$415

Find flight deals from Harlingen to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Harlingen (HRL) to Louisville (SDF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$351
(United Airlines)
Provider with most accurate pricing for Harlingen Valley Intl-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Harlingen Valley Intl-Louisville Intl flights.
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From Harlingen Valley Intl to Louisville Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen to Louisville 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, Cheapflights users made 2,558,603 searches. Data last updated March 20, 2026.
Use the filters below to find and compare flights from Harlingen to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

HarlingenLouisville

HRL - SDF

HRLSDF

Harlingen Valley Intl

Sat 4/18

7:00 am-1:36 pm

1 stop5h 36m

Louisville Intl

Wed 4/22

6:00 am-11:23 am

1 stop6h 23m

$351

HarlingenLouisville

HRL - SDF

HRLSDF

Harlingen Valley Intl

Mon 3/30

2:45 pm-10:38 pm

1 stop6h 53m

Louisville Intl

Sat 5/9

5:41 pm-10:51 pm

1 stop6h 10m

$355

HarlingenLouisville

HRL - SDF

HRLSDF

Harlingen Valley Intl

Mon 3/30

12:05 pm-11:12 pm

2 stops10h 07m

Louisville Intl

Sat 5/9

9:10 am-4:04 pm

2 stops7h 54m

$376

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/17

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Harlingen, Texas-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harlingen, Texas-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harlingen, Texas-Louisville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Harlingen, Texas-Louisville 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 Harlingen, Texas-Louisville 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 Harlingen to Louisville

Have a flexible travel schedule? Discover the best time to fly to Louisville from Harlingen with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Harlingen to Louisville. 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 Harlingen, Texas to Louisville?

    Departing from Harlingen, Texas to Louisville will take you 5h 36m. The distance between Harlingen, Texas and Louisville is about 1077 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Harlingen to Louisville that include hotel bookings?

    Yes. In addition to deals on Harlingen to Louisville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Harlingen to Louisville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harlingen to Louisville.

  • Can I find deals for business class flights from Harlingen to Louisville?

    Yes. Cheapflights offers flight deals from Harlingen to Louisville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Louisville?

Book flights to Louisville if you plan to visit one of these locations
Shepherdsville
Jeffersonville
Elizabethtown
Corydon
Bardstown

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