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$81+ Cheap flights from Louisville to Philadelphia (SDF - PHL)

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — PHL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Louisville Intl to Philadelphia are usually found in June or February, booked 62 days in advance, depart on a Saturday or Friday and return on a Monday

Cheap flight deals from Louisville to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Louisville (SDF) to Philadelphia (PHL). 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 September 11, 2025.

Round-trip from

$183
(Cheapflightsfares)

One-way from

$81
(Cheapflightsfares)

Popular in

September

Cheapest in

June

Average price

$674

Good round-trip deal

$439 or less

Good one-way deal

$227 or less
From Louisville Intl to Philadelphia
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One-way flight from Louisville Intl to Philadelphia
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Highest demand for flights based on searches. 16% potential increase in price ($96 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Louisville Intl to Philadelphia.
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Price to beat on a one-way flight from Louisville Intl to Philadelphia.
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Find flight deals from Louisville to Philadelphia

Cheapest flights from Louisville to Philadelphia
Explore the most affordable flight options available from Louisville to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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.
Wed 10/155:31 pmSDF - PHL
1 stop6h 05mSpirit Airlines
Wed 10/225:33 amPHL - SDF
1 stop11h 03mSpirit Airlines
Deal found 9/11$183
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/225:31 pmSDF - PHL
1 stop6h 05mSpirit Airlines
Thu 10/235:33 amPHL - SDF
1 stop12h 30mSpirit Airlines
Deal found 9/10$185
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/167:15 amSDF - PHL
1 stop17h 58mMultiple Airlines
Tue 10/219:14 pmPHL - SDF
1 stop20h 41mMultiple Airlines
Deal found 9/11$186
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/237:15 amSDF - PHL
1 stop17h 58mMultiple Airlines
Sun 10/2610:54 amPHL - SDF
1 stop23h 58mMultiple Airlines
Deal found 9/10$194
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/110:14 amSDF - PHL
1 stop21h 21mMultiple Airlines
Sun 10/55:33 amPHL - SDF
1 stop29h 19mMultiple Airlines
Deal found 9/9$200
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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.
Wed 10/155:31 pmSDF - PHL
1 stop6h 05mSpirit Airlines
Fri 10/311:58 pmPHL - SDF
1 stop8h 49mSpirit Airlines
Deal found 9/10$205
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/167:15 amSDF - PHL
1 stop17h 58mMultiple Airlines
Sat 10/255:33 amPHL - SDF
1 stop12h 30mMultiple Airlines
Deal found 9/11$206
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:45 amSDF - PHL
1 stop11h 09mAmerican Airlines
Sat 11/19:27 amPHL - SDF
1 stop7h 56mAmerican Airlines
Deal found 9/11$207
This CheapOair deal was found by Cheapflights users on 9/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/611:47 amSDF - PHL
1 stop7h 02mSpirit Airlines
Fri 10/101:58 pmPHL - SDF
1 stop8h 49mSpirit Airlines
Deal found 9/9$212
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 11/1310:55 amSDF - PHL
1 stop8h 11mMultiple Airlines
Wed 11/198:05 pmPHL - SDF
1 stop13h 54mMultiple Airlines
Deal found 9/9$216
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/155:31 pmSDF - PHL
1 stop16h 01mSpirit Airlines
Sat 10/255:33 amPHL - SDF
1 stop12h 30mSpirit Airlines
Deal found 9/11$219

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Philadelphia 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 September 11, 2025.
Use the filters below to find and compare flights from Louisville to Philadelphia that are best for you.

Fly from

Louisville

Fly to

Philadelphia

Route

Depart

Return

Price

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Wed 10/22

5:31 pm-11:36 pm

1 stop6h 05m

Philadelphia

Thu 10/23

5:33 am-6:03 pm

1 stop12h 30m

$185

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Wed 10/15

5:31 pm-11:36 pm

1 stop6h 05m

Philadelphia

Fri 10/31

1:58 pm-10:47 pm

1 stop8h 49m

$205

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Thu 11/13

10:55 am-12:32 am

1 stop13h 37m

Philadelphia

Tue 11/18

8:05 pm-9:59 am

1 stop13h 54m

$219

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Wed 10/1

10:14 am-11:38 am

1 stop25h 24m

Philadelphia

Sun 10/5

8:08 pm-10:52 am

2 stops14h 44m

$239

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Sat 11/22

12:43 pm-9:44 pm

1 stop9h 01m

Philadelphia

Sun 11/23

12:28 pm-9:29 pm

1 stop9h 01m

$239

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Wed 10/15

5:30 am-3:20 pm

2 stops9h 50m

Philadelphia

Wed 10/22

10:15 am-6:05 pm

2 stops7h 50m

$244

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Sat 10/18

6:58 pm-9:32 am

1 stop14h 34m

Philadelphia

Thu 10/23

6:37 pm-9:01 am

2 stops14h 24m

$244

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Fri 11/7

10:55 am-12:32 am

1 stop13h 37m

Philadelphia

Sun 11/9

8:05 pm-9:59 am

1 stop13h 54m

$245

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Sat 10/18

6:58 pm-7:30 am

2 stops12h 32m

Philadelphia

Sat 10/25

5:33 am-6:03 pm

1 stop12h 30m

$248

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Wed 10/15

5:31 pm-7:30 am

2 stops13h 59m

Philadelphia

Thu 10/23

10:54 am-6:03 pm

1 stop7h 09m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 22 results
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Best time to book a flight from Louisville to Philadelphia

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

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

Use this chart to determine the optimal time to book a round-trip flight from Louisville to Philadelphia. Price data was last updated on August 29, 2025.

The best time to book flights from Louisville to Philadelphia is 62 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Louisville to Philadelphia (average of $236). Flying from Louisville to Philadelphia in March is currently the most expensive (average of $295). 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 SDF to PHL?

Find hourly flight availability from Louisville to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 69% on flights from Louisville to Philadelphia by exploring options for tickets in the evening.

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. 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 Philadelphia. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from Louisville to Philadelphia, 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
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

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
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

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
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

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
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

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 Louisville to Philadelphia. 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 Louisville to Philadelphia?

    Philadelphia is the airport most travelers will use when flying to Philadelphia from Louisville Intl. Booking flights from Louisville Intl (SDF) to Philadelphia (PHL) should be relatively easy as there are 7 daily flights to Philadelphia from 4 different airlines. 1h 47m is how long a flight from Louisville to Philadelphia will take if you book a nonstop flight.

  • How popular is this Louisville to Philadelphia flight route?

    The Louisville Intl to Philadelphia flight path was viewed by 13 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Louisville to Philadelphia?

    Airlines like Spirit Airlines and American Airlines fly from Louisville to Philadelphia in about 6h 05m. The time it takes to get you to your destination can typically vary by up to 2h 56m. Airlines will cover a distance of 575 mi. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from Louisville to Philadelphia round-trip from $165. Other airlines that can offer you cheap pricing are Delta, from $226, and Southwest, from $238. Spirit Airlines is 65% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Consider Piedmont Airlines (90%), American Airlines (88%) or Qatar Airways (88%) when booking your flight. These represent the most reliable airlines when flying from Louisville to Philadelphia.

  • What are the cheapest flights from Louisville to Philadelphia?

    Looking for the cheapest flight from Louisville to Philadelphia? While on average our users pay $551, our data indicates the cheapest price to be $125. The most popular route (Louisville Intl - Philadelphia), is priced around $183.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Louisville to Philadelphia 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 Louisville to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from Louisville to Philadelphia (average of $236). Flying from Louisville to Philadelphia in March is currently the most expensive (average of $295). 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Pottstown
Reading
Dewey Beach
Ephrata
Camden
Ocean City
Cherry Hill
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Louisville to Philadelphia

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

Discover the top 4 airlines that operate flights from Louisville to Philadelphia. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$165Average$238FlexibilityNo cancel feeOn-time65%
DeltaCheapest$226Average$346FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$238Average$427FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$277Average$496FlexibilityNo cancel feeOn-time71%

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