Southwest® flights from Long Island/Islip MacArthur to Louisville from $198

Promo Code

Low fares from Long Island/Islip MacArthur to Louisville

$

Long Island/Islip MacArthur (ISP)to

Louisville (SDF)
Depart: 06/18/2026

One-way

Basic

From
$198
Seen: 5 hrs ago

Long Island/Islip MacArthur (ISP)to

Louisville (SDF)
Depart: 07/02/2026

One-way

Basic

From
$198
Seen: 7 hrs ago

Long Island/Islip MacArthur (ISP)to

Louisville (SDF)
Depart: 07/01/2026

One-way

Basic

From
$203
Seen: 5 hrs ago

Long Island/Islip MacArthur (ISP)to

Louisville (SDF)
Depart: 05/11/2026

One-way

Basic

From
$211
Seen: 18 hrs ago

Long Island/Islip MacArthur (ISP)to

Louisville (SDF)
Depart: 06/19/2026

One-way

Basic

From
$219
Seen: 14 hrs ago

Long Island/Islip MacArthur (ISP)to

Louisville (SDF)
Depart: 07/02/2026

One-way

Choice

From
$238
Seen: 7 hrs ago

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Explore flights from Long Island/Islip MacArthur to Louisville

Apr 2026
From$382*
Seen: 10 hrs ago
One Way/Basic
May 2026
From$211*
Seen: 18 hrs ago
One Way/Basic
Jun 2026
From$198*
Seen: 5 hrs ago
One Way/Basic
$211
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    • Range$211-$382

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Long Island MacArthur Airport
    Arriving at:
    Louisville International Airport
    Distance:
    699 miles

    Route Information

    64† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 64 weekly flights from Long Island/Islip MacArthur to Louisville on Southwest Airlines.
    To find the lowest fares by day and time to fly Long Island/Islip MacArthur to Louisville with Southwest, check out our Low Fare Calendar.
    You can rent a car at Louisville International Airport book yours with your flight.
    Yes! Flights from Long Island/Islip MacArthur to Louisville—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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