$361+ Cheap flights from Harlingen 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 8/25. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — SDF
Jun 3 — Jun 101
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Harlingen to LouisvilleExplore 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 May 4, 2026.
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 May 4, 2026.
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 8/252:00 pm
HRL
- SDF
1 stop7h 14m
United Airlines
Wed 8/267:10 am
SDF
- HRL
1 stop7h 04m
United Airlines
Deal found 4/29![United Airlines logo]()
$361
This United Airlines deal was found by Cheapflights users on 5/3. 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.
Tue 8/182:00 pm
HRL
- SDF
1 stop5h 00m
United Airlines
Wed 8/197:10 am
SDF
- HRL
1 stop7h 04m
United Airlines
Deal found 5/3![United Airlines logo]()
$385
This Southwest deal was found by Cheapflights users on 5/3. 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 6/210:45 am
HRL
- SDF
1 stop5h 25m
Southwest
Sat 7/410:45 am
SDF
- HRL
1 stop4h 40m
Southwest
Deal found 5/3![Southwest logo]()
$408
This Southwest deal was found by Cheapflights users on 4/29. 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.
Wed 4/2910:45 am
HRL
- SDF
1 stop5h 25m
Southwest
Thu 4/303:45 pm
SDF
- HRL
1 stop5h 50m
Southwest
Deal found 4/29![Southwest logo]()
$591
Best flights from Harlingen to LouisvilleDiscover carefully curated flight deals from Harlingen to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 4, 2026.
Discover carefully curated flight deals from Harlingen to Louisville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 4, 2026.
This Southwest deal was found by Cheapflights users on 5/3. 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 6/210:45 am
HRL
- SDF
1 stop5h 25m
Southwest
Sat 7/410:45 am
SDF
- HRL
1 stop4h 40m
Southwest
Deal found 5/3![Southwest logo]()
$408
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 May 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $361 (United Airlines) |
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 May 4, 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
Cheapest round-trip
Quickest round-trip
HarlingenLouisville
HRL - SDF
HRLSDF
Harlingen Valley Intl
Tue 6/2
10:45 am-5:10 pm
1 stop5h 25m
Louisville Intl
Sat 7/4
10:45 am-2:25 pm
1 stop4h 40m
$408
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Harlingen-Louisville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harlingen-Louisville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harlingen-Louisville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Harlingen-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-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.
HRL-SDF
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.
Traveling to a place near Louisville?
Book flights to Louisville if you plan to visit one of these locationsShepherdsville
Elizabethtown
Corydon
Jeffersonville
Bardstown
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