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$75+ Cheap flights from Philadelphia to Louisville (PHL - SDF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SDF
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Find cheap flights from Philadelphia to Louisville with Cheapflights

1. Tell us where you want to go

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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3. Compare prices and book

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Cheapflights Tip: The best prices from Philadelphia to Louisville Intl are usually found in February or May, booked 73 days in advance, depart on a Monday or Wednesday and return on a Saturday

Cheap flight deals from Philadelphia to Louisville

Cheapest flights from Philadelphia to Louisville
Explore the most affordable flight options available from Philadelphia to Louisville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Priceline deal was found by Cheapflights users on 1/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/255:30 am
PHL
-
SDF
1 stop6h 51m
Spirit Airlines
Wed 3/41:19 pm
SDF
-
PHL
1 stop5h 32m
Spirit Airlines
Deal found 1/26$179
This Priceline deal was found by Cheapflights users on 1/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/176:21 am
PHL
-
SDF
1 stop5h 58m
Spirit Airlines
Thu 3/193:33 pm
SDF
-
PHL
1 stop8h 43m
Spirit Airlines
Deal found 1/25$185
This Expedia deal was found by Cheapflights users on 1/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/248:06 am
PHL
-
SDF
1 stop6h 32m
Spirit Airlines
Thu 2/263:33 pm
SDF
-
PHL
1 stop8h 17m
Spirit Airlines
Deal found 1/25$208
This Priceline deal was found by Cheapflights users on 1/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/165:00 am
PHL
-
SDF
1 stop6h 08m
Spirit Airlines
Thu 3/193:33 pm
SDF
-
PHL
1 stop8h 43m
Spirit Airlines
Deal found 1/25$212
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/187:59 pm
PHL
-
SDF
1 stop18h 39m
Multiple Airlines
Fri 2/201:19 pm
SDF
-
PHL
1 stop8h 40m
Multiple Airlines
Deal found 1/25$218
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/411:47 am
PHL
-
SDF
1 stop25h 39m
Multiple Airlines
Sun 2/82:26 pm
SDF
-
PHL
1 stop8h 16m
Multiple Airlines
Deal found 1/25$220
This Cheapflightsfares deal was found by Cheapflights users on 1/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/178:06 am
PHL
-
SDF
1 stop6h 32m
Spirit Airlines
Thu 2/193:33 pm
SDF
-
PHL
1 stop8h 17m
Spirit Airlines
Deal found 1/25$224
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/244:14 pm
PHL
-
SDF
1 stop20h 07m
Multiple Airlines
Thu 2/262:26 pm
SDF
-
PHL
2 stops10h 35m
Multiple Airlines
Deal found 1/25$234
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/232:25 pm
PHL
-
SDF
1 stop24h 13m
Multiple Airlines
Thu 2/262:26 pm
SDF
-
PHL
1 stop9h 18m
Multiple Airlines
Deal found 1/25$239
This Flightnetwork deal was found by Cheapflights users on 1/26. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/126:21 am
PHL
-
SDF
1 stop8h 12m
Spirit Airlines
Thu 3/193:33 pm
SDF
-
PHL
1 stop8h 43m
Spirit Airlines
Deal found 1/26$240
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/175:18 pm
PHL
-
SDF
2 stops17h 50m
Multiple Airlines
Thu 3/193:33 pm
SDF
-
PHL
1 stop7h 26m
Multiple Airlines
Deal found 1/25$254

Find flight deals from Philadelphia to Louisville

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(Priceline)

One-way from

$75
(Expedia)

Popular in

October

Cheapest in

February

Average price

$561

Good round-trip deal

$489 or less

Good one-way deal

$522 or less
Provider with most accurate pricing for Philadelphia-Louisville Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Louisville Intl flights.
Search Deals
From Philadelphia to Louisville Intl
Search Deals
One-way flight from Philadelphia to Louisville Intl
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Philadelphia to Louisville Intl.
Search Deals
Price to beat on a one-way flight from Philadelphia to Louisville Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia 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 January 27, 2026.
Use the filters below to find and compare flights from Philadelphia to Louisville that are best for you.

Fly from

Philadelphia

Fly to

Louisville

Route

Depart

Return

Price

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Wed 2/25

5:30 am-12:21 pm

1 stop6h 51m

Louisville Intl

Wed 3/4

1:19 pm-6:51 pm

1 stop5h 32m

$179

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Tue 2/17

8:06 am-2:38 pm

1 stop6h 32m

Louisville Intl

Thu 2/19

3:33 pm-11:50 pm

1 stop8h 17m

$224

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Mon 2/23

2:25 pm-2:38 pm

1 stop24h 13m

Louisville Intl

Thu 2/26

2:26 pm-11:44 pm

1 stop9h 18m

$239

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Fri 3/20

5:00 am-11:08 am

1 stop6h 08m

Louisville Intl

Tue 3/24

1:14 pm-7:40 pm

1 stop6h 26m

$259

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Fri 3/6

5:30 am-12:21 pm

1 stop6h 51m

Louisville Intl

Mon 3/9

1:19 pm-11:16 pm

1 stop9h 57m

$289

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 4/2

9:20 am-11:08 am

2 stops25h 48m

Louisville Intl

Tue 4/7

1:14 pm-11:25 pm

1 stop10h 11m

$301

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Wed 2/18

9:39 am-2:38 pm

3 stops28h 59m

Louisville Intl

Fri 2/20

1:19 pm-11:50 pm

2 stops10h 31m

$327

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Sun 4/26

10:38 pm-11:38 am

1 stop13h 00m

Louisville Intl

Wed 4/29

12:33 pm-8:04 pm

1 stop7h 31m

$341

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 3/26

8:18 am-2:33 pm

1 stop6h 15m

Louisville Intl

Mon 3/30

12:03 pm-8:48 pm

1 stop8h 45m

$344

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Fri 4/3

9:37 pm-8:41 pm

2 stops23h 04m

Louisville Intl

Tue 4/7

1:14 pm-11:25 pm

1 stop10h 11m

$351

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 20 results
1
2

Compare providers for flights from Philadelphia to Louisville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to Louisville in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

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

Have a flexible travel schedule? Discover the best time to fly to Louisville from Philadelphia 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.

Cheapflights Insights

Everything you need to know about your flight from Philadelphia to Louisville

How far ahead should I book a flight from Philadelphia to Louisville?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Louisville. Price data was last updated on January 23, 2026.

To ensure you get the cheapest price possible for a flight from Philadelphia to Louisville, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Philadelphia to Louisville?

Currently, April is the cheapest month in which you can book a flight from Philadelphia to Louisville (average of $60). Flying from Philadelphia to Louisville in September is currently the most expensive (average of $152). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PHL to SDF?

Find hourly flight availability from Philadelphia to Louisville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 27, 2026.

It’s typically best to fly out from Philadelphia to Louisville at noon. Doing so could potentially save you 4% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Philadelphia to Louisville?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Louisville. Price data was last updated on January 24, 2026.

Travelers seeking maximum savings on their Philadelphia to Louisville flight should consider departing on Saturday at noon when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Louisville

Get insights into the airlines that provide service to Louisville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisville. Reviews last updated January 27, 2026.
Read through reviews of airlines operating flights from Philadelphia to Louisville, such as Southwest, Delta, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,119 reviews
Southwest
8.0
Very good
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,198 reviews
Southwest
8.0
Very good
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,384 reviews
Southwest
8.0
Very good
4,268 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Louisville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Philadelphia to Louisville?

    If you book a flight from Philadelphia to Louisville, you will be flying from Philadelphia to Louisville Intl. Flights to Louisville Intl (SDF) from Philadelphia (PHL) take 4h 42m for a nonstop flight. There are 2 flights from Philadelphia to Louisville per day from 4 airlines.

  • How popular is this Philadelphia to Louisville flight route?

    Within the past month, 1 users have taken a look at flights from Philadelphia to Louisville Intl.

  • How long is the flight from Philadelphia to Louisville?

    Airlines like Spirit Airlines fly from Philadelphia to Louisville in about 6h 51m. The time it takes to get you to your destination can typically vary by up to . Philadelphia and Louisville are separated by a distance of 575 mi.

  • What are the cheapest airlines flying from Philadelphia to Louisville round-trip?

    According to our current data, Spirit Airlines ($144), Southwest ($189), and Delta ($226) offers the cheapest pricing from Philadelphia to Louisville. You may be able to fly from Philadelphia to Louisville for 71% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Philadelphia to Louisville one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $113. Users have also found prices from $153 and $158 on American Airlines and Southwest, respectively.

  • What are the most reliable airlines from Philadelphia to Louisville?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Philadelphia to Louisville on time: Aer Lingus (87%), Alaska Airlines (83%), Piedmont Airlines (83%).

  • What are the cheapest flights from Philadelphia to Louisville?

    The cheapest flight price from Philadelphia to Louisville is $425. On average you can expect to pay $520. The most popular route, (Philadelphia - Louisville Intl), can usually be booked for $179.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Philadelphia 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.

  • What is the cheapest month to book a flight from Philadelphia to Louisville?

    Currently, April is the cheapest month in which you can book a flight from Philadelphia to Louisville (average of $60). Flying from Philadelphia to Louisville in September is currently the most expensive (average of $152). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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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Alternative routes for Philadelphia to Louisville

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Philadelphia to Louisville

Discover the top 4 airlines that operate flights from Philadelphia to Louisville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$144Average$224FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$189Average$396FlexibilityNo cancel feeOn-time63%
DeltaCheapest$226Average$396FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$318Average$516FlexibilityNo cancel feeOn-time71%

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