$71 Cheap Flights from Louisville (SDF) to Philadelphia (PHL)

View $71 flight on Wed, Jan 14, 2026Opens in a new window

Popular airlines from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)

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Cheap Flights from Louisville to Philadelphia (SDF-PHL)

Prices were available within the past 7 days and start at $71 for one-way flights and $133 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Sat, Feb 28 - Tue, Mar 3
SDF
Louisville
PHL
Philadelphia
$133 Roundtrip, found 6 days ago
$133
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Sat, Feb 28 from Louisville to Philadelphia, returning Tue, Mar 3, priced at $133 found 6 days ago
Spirit Airlines
Tue, Feb 3 - Sun, Feb 8
SDF
Louisville
PHL
Philadelphia
$136 Roundtrip, found 6 days ago
$136
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Tue, Feb 3 from Louisville to Philadelphia, returning Sun, Feb 8, priced at $136 found 6 days ago
Spirit Airlines
Wed, Jan 14 - Tue, Jan 20
SDF
Louisville
PHL
Philadelphia
$144 Roundtrip, found 3 days ago
$144
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Wed, Jan 14 from Louisville to Philadelphia, returning Tue, Jan 20, priced at $144 found 3 days ago
Spirit Airlines
Tue, Feb 3 - Tue, Feb 10
SDF
Louisville
PHL
Philadelphia
$147 Roundtrip, found 2 days ago
$147
Roundtrip
found 2 days ago
Select Spirit Airlines flight, departing Tue, Feb 3 from Louisville to Philadelphia, returning Tue, Feb 10, priced at $147 found 2 days ago
Spirit Airlines
Sat, Feb 28 - Tue, Mar 3
SDF
Louisville
PHL
Philadelphia
$158 Roundtrip, found 6 days ago
$158
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Sat, Feb 28 from Louisville to Philadelphia, returning Tue, Mar 3, priced at $158 found 6 days ago
Spirit Airlines
Wed, Jan 21 - Mon, Jan 26
SDF
Louisville
PHL
Philadelphia
$161 Roundtrip, found 7 hours ago
$161
Roundtrip
found 7 hours ago
Select Spirit Airlines flight, departing Wed, Jan 21 from Louisville to Philadelphia, returning Mon, Jan 26, priced at $161 found 7 hours ago
American Airlines
Wed, Feb 4 - Fri, Feb 6
SDF
Louisville
PHL
Philadelphia
$186 Roundtrip, found 4 days ago
$186
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Feb 4 from Louisville to Philadelphia, returning Fri, Feb 6, priced at $186 found 4 days ago
United
Tue, Jan 20 - Wed, Jan 21
SDF
Louisville
PHL
Philadelphia
$301 Roundtrip, found 3 days ago
$301
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jan 20 from Louisville to Philadelphia, returning Wed, Jan 21, priced at $301 found 3 days ago
Southwest Airlines
Thu, Feb 5 - Tue, Feb 10
SDF
Louisville
PHL
Philadelphia
$328 Roundtrip, found 2 days ago
$328
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Thu, Feb 5 from Louisville to Philadelphia, returning Tue, Feb 10, priced at $328 found 2 days ago
Delta
Wed, Apr 29 - Sat, May 16
SDF
Louisville
PHL
Philadelphia
$489 Roundtrip, just found
$489
Roundtrip
just found
Select Delta flight, departing Wed, Apr 29 from Louisville to Philadelphia, returning Sat, May 16, priced at $489 just found

Find the cheapest month to fly from Louisville (SDF) to Philadelphia (PHL)

January is typically the cheapest month to fly

From $154 - $563 per traveler.

Alternative airports near Philadelphia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Philadelphia Intl. PHL. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $547
PHL
Philadelphia Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $547
Flights from Louisville (SDF) to Philadelphia (PHL)
Origin airport
Louisville Intl.
Destination airport
Philadelphia Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$133
Distance
575 mi
Average flight time
2 hours 1 min

Louisville to Philadelphia Flights

The cheapest times to fly from Louisville to Philadelphia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Louisville to Philadelphia are during the month of February. You can find some of the cheapest flights from Louisville to Philadelphia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Louisville to Philadelphia

Sunday is one of the best days to book for cheap flights from Louisville to Philadelphia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Louisville to Philadelphia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Louisville to Philadelphia in 2026. You can also book with separate airlines for your outbound and return journeys, from $71 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Louisville to Philadelphia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Louisville to Philadelphia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL) cost?
Get a cheap one-way flight from $71 or cheap return flight from $133 from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)?
February is the most affordable month to fly from SDF to PHL. Traveling outside of peak seasons is often the key to better flight prices.
Which airlines fly direct from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)?
Board a direct flight with American Airlines and fly straight from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL).
What is the cheapest airline that flies from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)?
To find the cheapest airline that'll fly you from SDF to PHL, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)?
When departing from Louisville Intl. Airport (SDF), you'll have a choice from an average of 2 daily nonstop flights to Philadelphia Intl. Airport (PHL).
What are the most popular departure times for flights from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)?
Flights between SDF and PHL tend to be busiest at 7 AM. If you'd like a quieter experience and potentially cheaper fares, look for a time when demand is lower.
What day of the week has the most flights from SDF to PHL?
Jet off on a Friday if you're after the largest selection of flights from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL).
What is the earliest flight from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)?
The earliest flight jetting off from Louisville Intl. Airport (SDF) is at around 7:43AM UTC-5. Hop on this flight and you'll land at Philadelphia Intl. Airport (PHL) at approximately 9:39AM UTC-5. The total time in the air is 1h 56m.
How long does it take to fly from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)?
It usually takes 1 hour and 55 minutes to cover the 580 mi from SDF to PHL.
What airline has the least delays from SDF to PHL?
Consider traveling with American Airlines if you'd like to go straight from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL) without any holdups. This carrier has the best track record for punctuality, with an on-time score of 83%. Want to be notified if anything changes? You can check your flight status using the Expedia App.
What is the best time to fly from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)?
To avoid possible delays on the Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL) route, aim to travel before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Philadelphia from Louisville Intl. Airport (SDF)?
If you're traveling on a direct flight from Louisville Intl. Airport (SDF) to Philadelphia, Philadelphia Intl. Airport (PHL) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL) last-minute?
Last-minute fares from SDF to PHL are usually more expensive. For the lowest rates, start searching for flights as early as possible. That said, if you're flexible with your travel dates, it's possible to score a cheap ticket right before your trip.
Is it cheaper to book a SDF to PHL flight and hotel package?
You'll typically save money by booking a SDF to PHL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After selecting your ideal accommodations and flights, consider adding extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from Louisville Intl. Airport (SDF) to Philadelphia Intl. Airport (PHL)?
If you booked your SDF to PHL flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

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*Available to One Key members.