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$79+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SDF
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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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 Thursday and return on a Saturday

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 August 7, 2025.

Round-trip from

$198
(Cheapflightsfares)

One-way from

$79
(FlightHub)

Popular in

July

Cheapest in

February

Average price

$509

Good round-trip deal

$509 or less

Good one-way deal

$433 or less
From Philadelphia to Louisville Intl
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One-way flight from Philadelphia to Louisville Intl
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Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Philadelphia to Louisville Intl.
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Price to beat on a one-way flight from Philadelphia to Louisville Intl.
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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 August 7, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 8/6. 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.
Fri 9/128:43 pmPHL - SDF
1 stop12h 36mSpirit Airlines
Sun 9/148:23 amSDF - PHL
1 stop12h 35mSpirit Airlines
Deal found 8/6$198
This Expedia deal was found by Cheapflights users on 8/6. 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.
Fri 10/171:57 pmPHL - SDF
1 stop9h 00mSpirit Airlines
Sat 10/189:31 pmSDF - PHL
1 stop12h 15mSpirit Airlines
Deal found 8/6$200
This FlightHub deal was found by Cheapflights users on 8/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/88:43 pmPHL - SDF
1 stop12h 36mSpirit Airlines
Wed 9/1010:14 amSDF - PHL
1 stop26h 48mSpirit Airlines
Deal found 8/7$203
This Cheapflightsfares deal was found by Cheapflights users on 8/7. 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.
Thu 9/112:07 pmPHL - SDF
1 stop7h 57mSpirit Airlines
Sun 9/148:23 amSDF - PHL
1 stop12h 35mSpirit Airlines
Deal found 8/7$204
This FlightHub deal was found by Cheapflights users on 8/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/198:43 pmPHL - SDF
1 stop12h 36mSpirit Airlines
Wed 9/2410:14 amSDF - PHL
1 stop26h 48mSpirit Airlines
Deal found 8/6$207
This Mytrip deal was found by Cheapflights users on 8/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/37:09 pmPHL - SDF
1 stop14h 10mSpirit Airlines
Sat 9/68:23 amSDF - PHL
1 stop15h 24mSpirit Airlines
Deal found 8/7$210
This Mytrip deal was found by Cheapflights users on 8/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:15 pmPHL - SDF
1 stop16h 04mSpirit Airlines
Mon 9/1510:14 amSDF - PHL
1 stop13h 45mSpirit Airlines
Deal found 8/7$212
This Mytrip deal was found by Cheapflights users on 8/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/305:05 amPHL - SDF
1 stop13h 48mSpirit Airlines
Tue 9/29:13 pmSDF - PHL
2 stops26h 46mSpirit Airlines
Deal found 8/6$216
This Mytrip deal was found by Cheapflights users on 8/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:07 pmPHL - SDF
2 stops18h 44mSpirit Airlines
Fri 8/227:58 pmSDF - PHL
1 stop13h 58mSpirit Airlines
Deal found 8/7$217

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 7, 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

Fri 9/12

8:43 pm-9:19 am

1 stop12h 36m

Louisville Intl

Sun 9/14

8:23 am-8:58 pm

1 stop12h 35m

$198

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Fri 10/17

1:57 pm-10:57 pm

1 stop9h 00m

Louisville Intl

Sat 10/18

9:31 pm-9:46 am

1 stop12h 15m

$200

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Mon 9/8

8:43 pm-9:19 am

1 stop12h 36m

Louisville Intl

Wed 9/10

10:14 am-1:02 pm

1 stop26h 48m

$203

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 9/11

2:07 pm-10:04 pm

1 stop7h 57m

Louisville Intl

Sun 9/14

8:23 am-8:58 pm

1 stop12h 35m

$204

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Fri 9/19

8:43 pm-9:19 am

1 stop12h 36m

Louisville Intl

Wed 9/24

10:14 am-1:02 pm

1 stop26h 48m

$207

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Wed 9/3

7:09 pm-9:19 am

1 stop14h 10m

Louisville Intl

Sat 9/6

8:23 am-11:47 pm

1 stop15h 24m

$210

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 9/11

5:15 pm-9:19 am

1 stop16h 04m

Louisville Intl

Mon 9/15

10:14 am-11:59 pm

1 stop13h 45m

$212

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Sat 8/30

5:05 am-6:53 pm

1 stop13h 48m

Louisville Intl

Tue 9/2

9:13 pm-11:59 pm

2 stops26h 46m

$216

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Wed 8/20

7:07 pm-1:51 pm

2 stops18h 44m

Louisville Intl

Fri 8/22

7:58 pm-9:56 am

1 stop13h 58m

$217

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Sat 9/6

8:43 pm-9:19 am

1 stop12h 36m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Showing 1-10 of 19 results
1
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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 August 1, 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 August 7, 2025.

It’s typically best to fly out from Philadelphia to Louisville at noon. Doing so could potentially save you 10% 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 August 3, 2025.

Travelers seeking maximum savings on their Philadelphia to Louisville flight should consider departing on Friday at noon 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.

Weekly flight availability from Philadelphia to Louisville

Explore weekly flight availability from Philadelphia to Louisville. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 7, 2025.

The most flights from PHL to SDF are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).

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 7, 2025.
Read through reviews of airlines operating flights from Philadelphia to Louisville, such as Southwest, United Airlines, 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
4,247 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,247 reviews
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Spirit Airlines
6.3
Okay
8,051 reviews
Southwest
8.0
Very good
4,247 reviews

Comfort

8.0

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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 03m 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.

  • What is the cheapest airline to fly from Philadelphia to Louisville round-trip?

    According to our current data, Spirit Airlines ($198), offers the cheapest pricing from Philadelphia to Louisville. You may be able to fly from Philadelphia to Louisville for 58% less than the average price by searching for this airline.

  • 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 (90%), American Airlines (83%), PSA Airlines (75%).

  • What are the cheapest flights from Philadelphia to Louisville?

    The cheapest flight price from Philadelphia to Louisville is $360. On average you can expect to pay $503. The most popular route, (Philadelphia - Louisville Intl), can usually be booked for $198.

  • 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

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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 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 August 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$166Average$239FlexibilityNo cancel feeOn-time65%
DeltaCheapest$226Average$399FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$256Average$420FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$258Average$396FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$307Average$502FlexibilityNo cancel feeOn-time71%

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