Southwest® flights from Philadelphia to Louisville from $172

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Low fares from Philadelphia to Louisville

$

Philadelphia (PHL)to

Louisville (SDF)
Depart: 04/21/2026

One-way

Basic

From
$172
Seen: 21 hrs ago

Philadelphia (PHL)to

Louisville (SDF)
Depart: 04/08/2026

One-way

Basic

From
$177
Seen: 23 hrs ago

Philadelphia (PHL)to

Louisville (SDF)
Depart: 04/20/2026

One-way

Basic

From
$178
Seen: 21 hrs ago

Philadelphia (PHL)to

Louisville (SDF)
Depart: 04/21/2026

One-way

Choice

From
$207
Seen: 21 hrs ago

Philadelphia (PHL)to

Louisville (SDF)
Depart: 04/08/2026

One-way

Choice

From
$212
Seen: 23 hrs ago

Philadelphia (PHL)to

Louisville (SDF)
Depart: 04/20/2026

One-way

Choice

From
$213
Seen: 21 hrs ago

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Find low fares

Explore flights from Philadelphia to Louisville

Mar 2026
From$248*
Seen: 9 hrs ago
One Way/Basic
Apr 2026
From$172*
Seen: 21 hrs ago
One Way/Basic
May 2026
From$219*
Seen: 1 hour ago
One Way/Basic
$177
$321
Displaying fares for March-2026
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    • Range$177-$321

    *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:
    Philadelphia International Airport
    Arriving at:
    Louisville International Airport
    Distance:
    576 miles

    Route Information

    75† 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 75 weekly flights from Philadelphia to Louisville on Southwest Airlines.
    To find the lowest fares by day and time to fly Philadelphia 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 Philadelphia 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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