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$91+ 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SDF
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 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 July 30, 2025.

Round-trip from

$191
(Booking.com)

One-way from

$91
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$558

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 July 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 July 30, 2025.

This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/287:00 amPHL - SDF
1 stop6h 51mSpirit Airlines
Thu 9/43:10 pmSDF - PHL
1 stop6h 29mSpirit Airlines
Deal found 7/29$191
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/119:50 pmPHL - SDF
1 stop11h 29mMultiple Airlines
Mon 9/1511:17 amSDF - PHL
1 stop13h 40mMultiple Airlines
Deal found 7/28$211
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3012:15 pmPHL - SDF
1 stop7h 15mSouthwest
Wed 9/36:00 amSDF - PHL
1 stop8h 30mSouthwest
Deal found 7/28$236

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 July 30, 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

Thu 8/28

7:00 am-1:51 pm

1 stop6h 51m

Louisville Intl

Thu 9/4

3:10 pm-9:39 pm

1 stop6h 29m

$191

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 9/11

9:50 pm-9:19 am

1 stop11h 29m

Louisville Intl

Mon 9/15

11:17 am-12:57 am

1 stop13h 40m

$211

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Sat 8/30

12:15 pm-7:30 pm

1 stop7h 15m

Louisville Intl

Wed 9/3

6:00 am-2:30 pm

1 stop8h 30m

$236

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Sat 9/20

8:43 pm-9:19 am

1 stop12h 36m

$91

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Tue 9/2

6:25 pm-10:40 pm

1 stop4h 15m

$118

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Thu 9/11

9:47 am-8:57 am

2 stops23h 10m

$134

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Sat 8/30

6:30 am-5:16 pm

1 stop10h 46m

$202

PhiladelphiaLouisville

PHL - SDF

PHLSDF

Philadelphia

Wed 8/27

10:30 am-11:02 pm

2 stops12h 32m

$235

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 July 25, 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 July 30, 2025.

It’s typically best to fly out from Philadelphia to Louisville at noon. Doing so could potentially save you 8% 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 July 27, 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 July 30, 2025.

The most flights from PHL to SDF are scheduled on a Monday (7 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 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 July 30, 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
4,241 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

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
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

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
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

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
4,241 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

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
8,048 reviews
Southwest
8.0
Very good
4,241 reviews

Entertainment

7.5

Boarding

8.1

Overall

8.0

Food

7.0

Comfort

8.0

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

    According to our current data, Spirit Airlines ($191), and Southwest ($236) offers the cheapest pricing from Philadelphia to Louisville. You may be able to fly from Philadelphia to Louisville for 59% 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 Spirit Airlines. According to our data, you can fly for as low as $91. Users have also found prices from $118 and $202 on Southwest and United Airlines, 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: Piedmont Airlines (90%), American Airlines (81%), Qatar Airways (74%).

  • What are the cheapest flights from Philadelphia to Louisville?

    The cheapest flight price from Philadelphia to Louisville is $433. On average you can expect to pay $555. The most popular route, (Philadelphia - Louisville Intl), can usually be booked for $191.

  • 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$144Average$230FlexibilityNo cancel feeOn-time65%
DeltaCheapest$226Average$399FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$256Average$420FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$289Average$398FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$306Average$501FlexibilityNo cancel feeOn-time71%

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