HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Louisville

$109+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SDF
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
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 May or January, booked 89 days in advance, depart on a Wednesday or Saturday 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 August 2, 2026.

This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Thu 9/101:50 pm
PHL
-
SDF
1 stop20h 45m
Multiple Airlines
Thu 9/179:09 pm
SDF
-
PHL
1 stop27h 21m
Multiple Airlines
Deal found 8/1$220
This Kiwi.com deal was found by Cheapflights users on 8/2. 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.
Sat 9/58:35 am
PHL
-
SDF
1 stop25h 57m
Multiple Airlines
Sat 9/1210:56 am
SDF
-
PHL
2 stops44h 20m
Multiple Airlines
Deal found 8/2$244
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Thu 8/276:00 am
PHL
-
SDF
1 stop27h 49m
Multiple Airlines
Mon 8/3111:19 am
SDF
-
PHL
2 stops13h 57m
Multiple Airlines
Deal found 7/30$260
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:00 am
PHL
-
SDF
1 stop10h 29m
Multiple Airlines
Sun 9/209:09 pm
SDF
-
PHL
1 stop27h 21m
Multiple Airlines
Deal found 7/29$262
This Kiwi.com deal was found by Cheapflights users on 8/1. 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.
Sat 8/296:40 pm
PHL
-
SDF
1 stop15h 52m
Multiple Airlines
Sat 9/58:46 pm
SDF
-
PHL
2 stops25h 47m
Multiple Airlines
Deal found 8/1$263
This Kiwi.com deal was found by Cheapflights users on 8/1. 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 9/155:32 pm
PHL
-
SDF
2 stops16h 39m
Multiple Airlines
Thu 9/175:24 pm
SDF
-
PHL
1 stop15h 41m
Multiple Airlines
Deal found 8/1$274
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Fri 8/289:00 am
PHL
-
SDF
1 stop11h 48m
Multiple Airlines
Sun 8/305:19 pm
SDF
-
PHL
1 stop16h 16m
Multiple Airlines
Deal found 7/28$276

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 August 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$220
(Kiwi.com)

One-way from

$109
(Kiwi.com)

Popular in

July

Cheapest in

May

Average price

$573

Good round-trip deal

$560 or less

Good one-way deal

$354 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. 1% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 2, 2026.
Use the filters below to find and compare flights from Philadelphia to Louisville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 8/27

2:05 pm-8:25 pm

1 stop6h 20m

Louisville Intl

Thu 9/3

3:20 pm-10:05 pm

1 stop6h 45m

$321

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 9/3

2:10 pm-8:35 pm

1 stop6h 25m

Louisville Intl

Thu 9/10

6:45 am-3:25 pm

2 stops8h 40m

$326

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Sat 9/5

8:05 am-5:20 pm

2 stops9h 15m

Louisville Intl

Sun 9/6

10:00 am-9:00 pm

2 stops11h 00m

$337

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Sat 9/5

11:55 am-9:25 pm

2 stops9h 30m

Louisville Intl

Sat 9/12

6:45 am-6:25 pm

2 stops11h 40m

$353

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Fri 10/23

1:55 pm-9:05 pm

1 stop7h 10m

Louisville Intl

Mon 10/26

3:35 pm-7:35 pm

1 stop4h 00m

$364

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Tue 9/15

1:45 pm-8:40 pm

1 stop6h 55m

Louisville Intl

Thu 9/17

7:20 am-3:25 pm

1 stop8h 05m

$365
Quickest round-trip

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 10/1

5:55 am-12:15 pm

1 stop6h 20m

Louisville Intl

Thu 10/1

3:35 pm-7:35 pm

1 stop4h 00m

$365

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Wed 10/21

6:25 am-3:20 pm

2 stops8h 55m

Louisville Intl

Fri 10/23

3:35 pm-11:10 pm

2 stops7h 35m

$396

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Fri 10/16

3:20 pm-12:10 am

2 stops8h 50m

Louisville Intl

Mon 10/19

3:35 pm-11:50 pm

2 stops8h 15m

$396

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 10/15

12:20 pm-9:05 pm

2 stops8h 45m

Louisville Intl

Sun 10/18

5:50 am-2:05 pm

2 stops8h 15m

$416

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 18 resultsSorted by cheapest first
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 August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 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?

To ensure you get the cheapest price possible for a flight from Philadelphia to Louisville, you should look to book at least 87 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, May is the cheapest month in which you can book a flight from Philadelphia to Louisville (average of $534). Flying from Philadelphia to Louisville in July is currently the most expensive (average of $573). 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 August 2, 2026.

It’s typically best to fly out from Philadelphia to Louisville in the afternoon. Doing so could potentially save you 17% on the flight price compared to flying at noon, 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 July 25, 2026.

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

How much does it cost to fly round-trip from Philadelphia to Louisville?

Airfare is below average for this route at the moment.

Philadelphia to Louisville flights typically cost between $499 and $592 in September.
The cheapest round-trip price found within the last 5 days was $220 on Multiple Airlines (Sep 10-Sep 17).

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 August 2, 2026.
Read through reviews of airlines operating flights from Philadelphia to Louisville, such as Southwest 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
4,229 reviews

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
Southwest
8.0
Very good
4,229 reviews
Southwest
8.0
Very good
4,229 reviews

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.
American Airlines
7.1
Good
11,845 reviews
Southwest
8.0
Very good
4,229 reviews

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Libby,Jun 2026

TUS - LAS

One delay in a 2 layover flight=a good trip. The crew was great.

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 19m for a nonstop flight. There are 3 flights from Philadelphia to Louisville per day from 2 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 Southwest fly from Philadelphia to Louisville in about 6h 20m. 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, Southwest ($189), and American Airlines ($469) offers the cheapest pricing from Philadelphia to Louisville. You may be able to fly from Philadelphia to Louisville for 65% 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 (88%), American Airlines (84%), Republic Airways (84%).

  • What are the cheapest flights from Philadelphia to Louisville?

    The cheapest flight price from Philadelphia to Louisville is $326. On average you can expect to pay $577. The most popular route, (Philadelphia - Louisville Intl), can usually be booked for $252.

  • 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, May is the cheapest month in which you can book a flight from Philadelphia to Louisville (average of $534). Flying from Philadelphia to Louisville in July is currently the most expensive (average of $573). 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
Corydon
Shepherdsville
Elizabethtown
Jeffersonville
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
Philadelphia to Nashville flights
Reagan-National to Nashville flights
John F Kennedy Intl to Cincinnati flights
Dulles Intl to Nashville flights
LaGuardia to Cincinnati flights
Newark to Cincinnati flights
Dulles Intl to Cincinnati flights
LaGuardia to Knoxville flights
Reagan-National to Cincinnati flights
Newark to Louisville flights
John F Kennedy Intl to Knoxville flights
LaGuardia to Louisville flights
Philadelphia to Cincinnati flights
Dulles Intl to Louisville flights
John F Kennedy Intl to Louisville flights
Reagan-National to Louisville flights
Newark to Knoxville flights
Newark to Lexington flights
John F Kennedy Intl to Lexington flights
Pittsburgh to Nashville flights
Dulles Intl to Knoxville flights
Allentown to Nashville flights
Reagan-National to Knoxville flights
LaGuardia to Lexington flights
Dulles Intl to Lexington flights
Philadelphia to Knoxville flights
Harrisburg to Nashville flights
Reagan-National to Lexington flights
John F Kennedy Intl to Blountville flights
Philadelphia to Lexington flights
LaGuardia to Blountville flights
Scranton to Nashville flights
State College to Nashville flights
Pittsburgh to Knoxville flights
Newark to Blountville flights
Pittsburgh to Cincinnati flights
Harrisburg to Lexington flights
Harrisburg to Knoxville flights
Harrisburg to Cincinnati flights
Pittsburgh to Louisville flights
Pittsburgh to Lexington flights
Newark to Evansville flights
Allentown to Louisville flights
Elmira to Nashville flights

Top 2 airlines flying from Philadelphia to Louisville

Discover the top 2 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 August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$189Average$407FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$469Average$561FlexibilityNo 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.