PHL - SDF

$112 Find Cheap Flights from Philadelphia to Louisville - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Louisville departing on 8/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$271
Typical prices: $407-$573
Multiple Airlines
Thu 9/17Sun 9/20
PHL - SDF • 1 stop
Cheapest non-stop
$494
Typical prices: $553-$573
American Airlines
Sun 9/6Wed 9/9
PHL - SDF • Non-stop
Nonstop flights
You can fly direct with American Airlines. Average duration is 2h 18m
Direct flights
Direct flights
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Direct flights
Direct flights
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Top layover airports
Cheapest • Avg $324 (round-trip)
Shortest trip • 3h 50m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 30% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 4% price drop
Most popular
Good to know
Good to know
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Good to know
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Philadelphia to Louisville (PHL-SDF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Louisville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Louisville

Thu, Sep 17 - Sun, Sep 20
Multiple Airlines Logo
7:50 am - 10:35 am
PHL
-
SDF
26h 45m
1 stop
Multiple Airlines Logo
9:09 pm - 11:35 am
SDF
-
PHL
14h 26m
1 stop
$271Multiple Airlines
Sat, Sep 5 - Wed, Sep 9
Multiple Airlines Logo
8:35 am - 10:32 am
PHL
-
SDF
25h 57m
1 stop
Multiple Airlines Logo
10:56 am - 11:18 pm
SDF
-
PHL
12h 22m
2 stops
$274Multiple Airlines
Sat, Sep 5 - Sun, Sep 6
Multiple Airlines Logo
7:25 am - 8:06 pm
PHL
-
SDF
12h 41m
1 stop
Multiple Airlines Logo
5:24 pm - 9:35 am
SDF
-
PHL
16h 11m
1 stop
$278Multiple Airlines
Sat, Sep 5 - Sat, Sep 12
Multiple Airlines Logo
7:25 am - 8:06 pm
PHL
-
SDF
12h 41m
1 stop
Multiple Airlines Logo
10:56 am - 4:27 pm
SDF
-
PHL
5h 31m
1 stop
$279Multiple Airlines
Mon, Aug 17 - Tue, Aug 25
Southwest Logo
2:05 pm - 8:25 pm
PHL
-
SDF
6h 20m
1 stop
Southwest Logo
8:45 am - 2:20 pm
SDF
-
PHL
5h 35m
1 stop
$321Southwest
Sat, Sep 5 - Wed, Sep 9
Southwest Logo
1:10 pm - 5:20 pm
PHL
-
SDF
4h 10m
1 stop
Southwest Logo
7:05 am - 1:05 pm
SDF
-
PHL
6h 00m
1 stop
$321Southwest
Thu, Aug 27 - Tue, Sep 1
Southwest Logo
2:05 pm - 8:25 pm
PHL
-
SDF
6h 20m
1 stop
Southwest Logo
1:15 pm - 6:00 pm
SDF
-
PHL
4h 45m
1 stop
$321Southwest
Sun, Sep 6 - Wed, Sep 9
American Airlines Logo
3:31 pm - 5:48 pm
PHL
-
SDF
2h 17mnonstop
American Airlines Logo
10:29 am - 8:05 pm
SDF
-
PHL
9h 36m
1 stop
$478American Airlines
Sat, Sep 5 - Tue, Sep 8
American Airlines Logo
9:33 am - 6:35 pm
PHL
-
SDF
9h 02m
1 stop
American Airlines Logo
7:31 am - 9:34 am
SDF
-
PHL
2h 03mnonstop
$478American Airlines
Sun, Sep 6 - Wed, Sep 9
American Airlines Logo
3:31 pm - 5:48 pm
PHL
-
SDF
2h 17mnonstop
American Airlines Logo
10:29 am - 8:05 pm
SDF
-
PHL
9h 36m
1 stop
$478American Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Louisville flights

Get data-powered insights and trends into flights from Philadelphia to Louisville to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Philadelphia to Louisville?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to Louisville departing in September.

Flight prices are below average for this route right now.

Flights to Louisville from Philadelphia usually cost between $499 and $592 in September.
The lowest price found in the past 5 days was $271 on Multiple Airlines (Sep 17-Sep 20).

What’s the cheapest day of the week to fly from Philadelphia to Louisville?

The average price of all round-trip flights from Philadelphia to Louisville clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Louisville on a Wednesday and more expensive on a Monday. On your return trip to Philadelphia, you should consider flying back on a Saturday, and avoid Tuesdays for better deals.

What is the cheapest month to fly from Philadelphia to Louisville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Louisville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Louisville is May, where tickets cost $534 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $573 and $573 respectively.

Can I save money by flying with a layover from Philadelphia to Louisville?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $529 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to Louisville, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to Louisville, you should book around 5 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low season

February

Cheapest flight

$112
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Philadelphia to Louisville

When to book flights from Philadelphia to Louisville

Are your dates flexible? Find out the best times to travel from Philadelphia to Louisville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Louisville

  • What is the cheapest flight from Philadelphia to Louisville?

    In the last 5 days, the lowest price for a flight from Philadelphia to Louisville was $112 for a one-way ticket and $271 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Louisville?

    No, a passport isn't needed to fly from Philadelphia to Louisville. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Philadelphia to Louisville?

    Philadelphia and Louisville are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at Louisville Intl.

  • Which airlines offer Wi-Fi service onboard planes from Philadelphia to Louisville?

    American Airlines, and Delta offer inflight Wi-Fi service on the Philadelphia to Louisville flight route.

  • Which aircraft models fly most regularly from Philadelphia to Louisville?

    The Embraer 175 is the aircraft model that flies most regularly on the Philadelphia to Louisville flight route.

  • Which airline alliances offer flights from Philadelphia to Louisville?

    oneworld is the only airline alliance operating flights between Philadelphia and Louisville.

  • On which days can I fly direct from Philadelphia to Louisville?

    There are nonstop flights from Philadelphia to Louisville on a daily basis.

  • Which is the best airline for flights from Philadelphia to Louisville, Southwest or American Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Louisville are Southwest and American Airlines. With an average price for the route of $407 and an overall rating of 8.0, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $561 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Philadelphia to Louisville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Louisville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Louisville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Louisville from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Louisville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Louisville with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and SDF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Louisville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Louisville from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Philadelphia to Louisville

  • Looking for a cheap flight? 25% of our users found flights on this route for $354 or less one-way and $560 or less round-trip.

Prefer to fly direct from Philadelphia to Louisville?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Philadelphia to Louisville Intl.
Find which airlines fly direct from Philadelphia Airport to Louisville Intl Airport, which days they fly and book direct flights.

Direct departures

Philadelphia to Louisville Intl

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Direct returns

Louisville Intl to Philadelphia

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Reviews of the top airlines flying from Philadelphia to Louisville

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Louisville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Louisville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4228 reviews
7.0Food
8.6Crew
8.1Boarding
7.5Entertainment
8.0Comfort
Airline reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

8.0 ExcellentSean, Jul 2026
HOU - LGB
Read more Southwest reviews

No wifi, seems to be very common with Southwest currently. Everything else was normal.

My experience will Southwest was good. I wish there was more entertainment and the boarding process was slow at time but other than that my experience was great definitely will be flying with SouthWest again.

For my birthday trip this was my second time ever flying, this trip was the best.

The seats were a bit cramped and worn, but otherwise okay.

Since the flight wasn’t full, we had some extra room. Crew was great

I really wish that SW would ask anyone with a carry-on to wait while those who don’t have to access the overhead bins are boarded. Then, reverse that when the plane arrives. Those without the need to clog up the aisle retrieving their bags from the overhead bins wait for those exiting the plane without needing to clog up. The aisle.

We boarded the flight and set two and a half hours on the jetway. Would have been better if they had not boarded us at all. Plane was hot and it was limited ability to access the restrooms or get a drink of water. Very unpleasant experience

The actual flight was great! The 3 hour delay not so much.

Southwest is a garbage airline and the people who fly it are garbage people.

Boarding was easy. Plane wasn’t crowded. Plenty of space. Flight was on time. Crew was pleasant.

Very good, boarded and took off on time and landed early

Boarding and Delays The boarding process for my American Airlines flight from Copenhagen to Philadelphia was a bit tricky. We experienced a gate change that required a long walk to a new area of the airport. Additionally, boarding was not via a jet bridge; we had to take a shuttle bus to the plane and then carry our luggage up the stairs ourselves. Furthermore, the bag drop didn't open until about 12:20 PM, which was only three hours before our scheduled departure. This meant I couldn't drop my bag off early and had to wait outside of security in order to drop off my bag and use the kiosk. The bag drop self-service kiosks also didn't open until about 12:00 PM when an American Airlines employee unlocked them so that we could print out our boarding passes and bag tags, which further created a backlog. The flight was delayed by over an hour because we had to wait for one of the tires on the plane to be changed. Flight Attendant Professionalism On a positive note, the flight attendant was very professional when handling a passenger who was sitting in the wrong seat. Even though the passenger was persistent and reluctant to move, the flight attendant calmly ensured the assigned passenger could take their seat. Kudos to the flight attendant for keeping his calm and composure, not allowing the issue to escalate, and handling it well under pressure while a line of passengers waited in the aisle to board. In-Flight Service The in-flight service was also fast, prompt, and efficient, although service had to be suspended for the last two hours of the flight due to weather and turbulence, which was outside of the crew's control. Limited Flight Options Please note that American Airlines only operates one flight per day in and out of Copenhagen. This means there are limited options available if your flight is delayed or canceled, which is something to take into consideration when booking.

Quick flight again no one illness why there were multiple delays and changing of the gate number.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

The gate got changed several times and the flight was delayed over an hour. Awful experience

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

No Snacks or Entertainment. The flight was short, snacks should still be given.

Everything was fine. Flight boarded and departed on time. Seating was spacious enough for my carryon to fit under the seat in front of me. No complaints at all. Flight even arrived early.

Boston ticket agent Cheryl Porter is WONDERFUL. Our Iberia flight to Barcelona was cancelled the morning we were scheduled to leave and Cheryl was our super hero - she found us seats on a flight to London and on to Barcelona. Truly a “can-do” attitude which we appreciated so much after the Iberia ticket agents told us there was “absolutely nothing they could do”. (As did the customer service agents at Iberia’s call center) Ms Porter is truly a wonderful person who genuinely cares about travelers!

Nothing wrong on this flight but nothing special. It was oversold and they had to bump people which is always bad.

Everything you need to know for your flight from Philadelphia to Louisville

Information on your arrival and departure airports