HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Louisville

$81+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SDF
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Philadelphia to Louisville Intl are usually found in February or May, booked 68 days in advance, depart on a Monday or Wednesday and return on a Friday

Cheap 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 septiembre 17, 2025.

Round-trip from

$183
(Cheapflightsfares)

One-way from

$81
(Cheapflightsfares)

Popular in

March

Cheapest in

February

Average price

$484

Good round-trip deal

$509 or less

Good one-way deal

$537 or less
From Philadelphia to Louisville Intl
Search Deals
One-way flight from Philadelphia to Louisville Intl
Search Deals
High demand for flights, 1% potential price rise
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
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

Find 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 septiembre 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/255:33 amPHL - SDF
1 stop12h 30mSpirit Airlines
mié. 10/295:31 pmSDF - PHL
1 stop6h 05mSpirit Airlines
Deal found 9/16$183
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/155:20 amPHL - SDF
1 stop12h 35mSpirit Airlines
jue. 10/167:15 amSDF - PHL
1 stop5h 38mSpirit Airlines
Deal found 9/15$194
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/1610:54 amPHL - SDF
1 stop7h 09mSpirit Airlines
lun. 10/2011:47 amSDF - PHL
1 stop7h 02mSpirit Airlines
Deal found 9/17$198
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/286:50 pmPHL - SDF
1 stop23h 05mMultiple Airlines
vie. 10/3111:47 amSDF - PHL
1 stop7h 02mMultiple Airlines
Deal found 9/15$206
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/22:07 pmPHL - SDF
1 stop7h 57mSpirit Airlines
lun. 10/611:47 amSDF - PHL
1 stop12h 12mSpirit Airlines
Deal found 9/16$210
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/2310:54 amPHL - SDF
1 stop22h 07mMultiple Airlines
dom. 10/266:58 pmSDF - PHL
1 stop14h 34mMultiple Airlines
Deal found 9/16$215
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/255:33 amPHL - SDF
1 stop12h 30mSpirit Airlines
dom. 10/266:58 pmSDF - PHL
1 stop14h 34mSpirit Airlines
Deal found 9/16$219
This KAYAK deal was found by Cheapflights users on 9/15. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/48:05 pmPHL - SDF
1 stop13h 54mSpirit Airlines
dom. 12/710:55 amSDF - PHL
1 stop13h 37mSpirit Airlines
Deal found 9/15$225
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/131:58 pmPHL - SDF
1 stop19h 13mMultiple Airlines
vie. 10/179:11 pmSDF - PHL
1 stop20h 24mMultiple Airlines
Deal found 9/16$234

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 septiembre 17, 2025.
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

sáb. 10/25

5:33 am-6:03 pm

1 stop12h 30m

Louisville Intl

mié. 10/29

5:31 pm-11:36 pm

1 stop6h 05m

$183

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

jue. 10/23

10:54 am-9:01 am

1 stop22h 07m

Louisville Intl

dom. 10/26

6:58 pm-9:32 am

1 stop14h 34m

$215

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

lun. 10/13

1:58 pm-9:11 am

1 stop19h 13m

Louisville Intl

vie. 10/17

9:11 pm-5:35 pm

1 stop20h 24m

$234

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

dom. 11/2

5:05 am-10:52 am

1 stop29h 47m

Louisville Intl

jue. 11/6

2:55 pm-12:19 am

2 stops9h 24m

$258

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

vie. 10/17

8:15 am-10:47 pm

2 stops14h 32m

Louisville Intl

lun. 10/20

11:47 am-6:49 pm

1 stop7h 02m

$278

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

jue. 12/11

5:15 am-11:45 pm

2 stops18h 30m

Louisville Intl

dom. 12/14

6:00 am-12:32 am

2 stops18h 32m

$291

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

jue. 10/30

5:21 pm-10:52 am

2 stops17h 31m

Louisville Intl

vie. 10/31

2:57 pm-6:49 pm

2 stops27h 52m

$302

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

mar. 10/14

6:05 pm-10:45 pm

1 stop4h 40m

Louisville Intl

mar. 10/21

6:25 am-1:15 pm

1 stop6h 50m

$317

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

jue. 10/23

5:33 am-10:47 pm

2 stops17h 14m

Louisville Intl

dom. 10/26

7:15 am-6:15 am

2 stops23h 00m

$318

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

dom. 9/28

6:15 am-2:15 pm

1 stop8h 00m

Louisville Intl

lun. 9/29

8:23 am-9:46 am

1 stop25h 23m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results
1
2

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 September 12, 2025.

To ensure you get the cheapest price possible for a flight from Philadelphia to Louisville, you should look to book at least 68 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, January is the cheapest month in which you can book a flight from Philadelphia to Louisville (average of $299). Flying from Philadelphia to Louisville in April is currently the most expensive (average of $369). 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 septiembre 17, 2025.

It’s typically best to fly out from Philadelphia to Louisville at noon. Doing so could potentially save you 12% on the flight price compared to flying in the evening, 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 September 14, 2025.

Travelers seeking maximum savings on their Philadelphia to Louisville flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday 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 septiembre 17, 2025.
Read through reviews of airlines operating flights from Philadelphia to Louisville, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,957 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,924 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,019 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 2h 16m for a nonstop flight. There are 6 flights from Philadelphia to Louisville per day from 5 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 12h 30m. 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 ($166), Delta ($226), and United Airlines ($256) offers the cheapest pricing from Philadelphia to Louisville. You may be able to fly from Philadelphia to Louisville for 64% less than the average price by searching for these airlines.

  • 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: Piedmont Airlines (95%), Qatar Airways (86%), American Airlines (84%).

  • What are the cheapest flights from Philadelphia to Louisville?

    The cheapest flight price from Philadelphia to Louisville is $489. On average you can expect to pay $547. The most popular route, (Philadelphia - Louisville Intl), can usually be booked for $185.

  • 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, January is the cheapest month in which you can book a flight from Philadelphia to Louisville (average of $299). Flying from Philadelphia to Louisville in April is currently the most expensive (average of $369). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to Louisville

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Nashville flights
Newark to Nashville flights
LaGuardia to Nashville flights
John F Kennedy Intl to Cincinnati flights
LaGuardia to Cincinnati flights
Reagan-National to Nashville flights
Philadelphia to Nashville flights
Dulles Intl to Nashville flights
Newark to Cincinnati flights
LaGuardia to Louisville flights
Newark to Louisville flights
LaGuardia to Knoxville flights
John F Kennedy Intl to Louisville flights
Reagan-National to Knoxville flights
John F Kennedy Intl to Knoxville flights
Dulles Intl to Cincinnati flights
Reagan-National to Cincinnati flights
Pittsburgh to Nashville flights
Newark to Knoxville flights
Dulles Intl to Knoxville flights
Dulles Intl to Louisville flights
Reagan-National to Louisville flights
Philadelphia to Cincinnati flights
LaGuardia to Lexington flights
Philadelphia to Knoxville flights
Newark to Lexington flights
John F Kennedy Intl to Lexington flights
Dulles Intl to Lexington flights
Harrisburg to Nashville flights
Reagan-National to Lexington flights
Philadelphia to Lexington flights
Allentown to Nashville flights
Pittsburgh to Knoxville flights
Newark to Blountville flights
John F Kennedy Intl to Blountville flights
Allentown to Cincinnati flights
Allentown to Lexington flights
Harrisburg to Knoxville flights
Pittsburgh to Louisville flights
Scranton to Nashville flights
Pittsburgh to Cincinnati flights
Scranton to Louisville flights
Allentown to Knoxville flights
Harrisburg to Cincinnati flights
State College to Louisville flights
State College to Knoxville flights
Harrisburg to Louisville flights
Scranton to Cincinnati flights
LaGuardia to Blountville flights

Top 5 airlines flying from Philadelphia to Louisville

Discover the top 5 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$166Average$259FlexibilityNo cancel feeOn-time65%
DeltaCheapest$226Average$404FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$256Average$420FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$258Average$396FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$313Average$505FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.