PHL - SDF

$87 Find Cheap Flights from Philadelphia to Louisville

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 5/20. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Louisville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Louisville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Louisville, as well as popular online travel agencies
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Cheap Flight Deals 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.

Recent round-trip flight deals from Philadelphia to Louisville

KAYAK's recommended round-trip deals from the most popular airlines that fly from Philadelphia to Louisville.
Discover the best prices for you by selecting your travel dates on KAYAK.
Delta Logo
6:00 am - 10:08 amPHL-SDF
4h 08m1 stop
Delta Logo
2:59 pm - 10:18 pmSDF-PHL
7h 19m1 stop
$201Delta
Find Deal
Sat, May 24 - Sat, May 24
Spirit Airlines Logo
5:05 am - 12:13 pmPHL-SDF
7h 08m1 stop
Spirit Airlines Logo
5:03 am - 9:47 amSDF-PHL
28h 44m1 stop
$214Spirit Airlines
Find Deal
Thu, Jun 12 - Mon, Jun 16
Spirit Airlines Logo
7:12 pm - 12:03 pmPHL-SDF
16h 51m1 stop
Spirit Airlines Logo
3:51 pm - 6:30 amSDF-PHL
14h 39m1 stop
$215Spirit Airlines
Find Deal
Mon, Jun 2 - Wed, Jun 4
 Logo
7:06 am - 9:38 amPHL-SDF
26h 32m2 stops
 Logo
6:26 pm - 10:43 pmSDF-PHL
28h 17m2 stops
Thu, May 29 - Sun, Jun 1
Southwest Logo
4:35 pm - 8:40 pmPHL-SDF
4h 05m1 stop
Southwest Logo
12:00 pm - 11:30 pmSDF-PHL
11h 30m2 stops
$342Southwest
Find Deal
Tue, Jun 3 - Fri, Jun 20
Southwest Logo
9:50 am - 7:55 pmPHL-SDF
10h 05m1 stop
Southwest Logo
6:25 am - 11:25 amSDF-PHL
5h 00m1 stop
$347Southwest
Find Deal
Sat, May 17 - Wed, May 28
American Airlines Logo
3:39 pm - 5:40 pmPHL-SDF
2h 01mnonstop
American Airlines Logo
8:56 am - 5:55 pmSDF-PHL
8h 59m1 stop
$364American Airlines
Find Deal
Thu, May 22 - Sun, May 25
United Airlines Logo
10:44 am - 2:30 pmPHL-SDF
3h 46m1 stop
United Airlines Logo
8:55 am - 2:24 pmSDF-PHL
5h 29m1 stop
$377United Airlines
Find Deal
Tue, May 20 - Wed, May 28
American Airlines Logo
6:35 pm - 8:57 pmPHL-SDF
2h 22mnonstop
American Airlines Logo
6:52 am - 12:09 pmSDF-PHL
5h 17m1 stop
$387American Airlines
Find Deal
Thu, Sep 11 - Sun, Sep 14
United Airlines Logo
10:30 am - 10:58 pmPHL-SDF
12h 28m2 stops
United Airlines Logo
7:00 am - 11:56 amSDF-PHL
4h 56m1 stop
$432United Airlines
Find Deal
Thu, Sep 4 - Sun, Sep 7
Useful Info

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.

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 Monday and more expensive on a Tuesday. On your return trip to Philadelphia, you should consider flying back on a Thursday, and avoid Sundays 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 February, where tickets cost $386 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $516 and $499 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 1 stop layover the cheapest option at $433 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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonJanuary
High seasonMay
Cheapest flight$87
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 10% lower on average.
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 3 days, the lowest price for a flight from Philadelphia to Louisville was $87 for a one-way ticket and $201 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 ERJ-145 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 Delta?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Louisville are Southwest and Delta. With an average price for the route of $400 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $360 and an overall rating of 8.0.

  • 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 $188 or less one-way and $387 or less round-trip.

Prefer to fly direct from Philadelphia to Louisville?

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

Alaska Airlines, American Airlines, Qatar Airways

Alaska Airlines, American Airlines, +1 more

Tuesday

Alaska Airlines, American Airlines, Qatar Airways

Alaska Airlines, American Airlines, +1 more

Wednesday

Alaska Airlines, American Airlines, Qatar Airways

Alaska Airlines, American Airlines, +1 more

Thursday

Alaska Airlines, American Airlines, Qatar Airways

Alaska Airlines, American Airlines, +1 more

Friday

Alaska Airlines, American Airlines, Qatar Airways

Alaska Airlines, American Airlines, +1 more

Saturday

Alaska Airlines, American Airlines, Qatar Airways

Alaska Airlines, American Airlines, +1 more

Sunday

Alaska Airlines, American Airlines, Qatar Airways

Alaska Airlines, American Airlines, +1 more

See more direct flights

Direct returns

Louisville Intl to Philadelphia

Monday

Aer Lingus, Alaska Airlines, American Airlines, +1 more

Aer Lingus, Alaska Airlines, +2 more

Tuesday

Aer Lingus, Alaska Airlines, American Airlines, +1 more

Aer Lingus, Alaska Airlines, +2 more

Wednesday

Aer Lingus, Alaska Airlines, American Airlines, +1 more

Aer Lingus, Alaska Airlines, +2 more

Thursday

Aer Lingus, Alaska Airlines, American Airlines, +1 more

Aer Lingus, Alaska Airlines, +2 more

Friday

Aer Lingus, Alaska Airlines, American Airlines, +1 more

Aer Lingus, Alaska Airlines, +2 more

Saturday

Aer Lingus, Alaska Airlines, American Airlines, +1 more

Aer Lingus, Alaska Airlines, +2 more

Sunday

Aer Lingus, Alaska Airlines, American Airlines, +1 more

Aer Lingus, Alaska Airlines, +2 more

See more direct flights
See more direct flights

Top 5 airlines serving 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 4294 reviews
8.2Boarding
7.6Entertainment
8.6Crew
8.0Comfort
7.1Food
Airline reviews

It is southwest seat was ok. Not the most comfortable seat

8.0 ExcellentJohn, Apr 2025PVD - FLL
Read more Southwest reviews

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

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

I would have liked to arrive on time - not 5 hours late!

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Only one drink pass through the cabin for a 4 hour flight. Quite rough and bumpy landing.

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

A bit rush for transit. Food and entertainment are not available

Multiple delays and not straight answer from the United team

Stewardess spilled orange juice on my clothes/seat no help no apology just threw napkins at me to clean the mess up. Not Happy.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

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.

late again! but its my only option to not take 9 hours to get to Memphis

Almost everything was outstanding. First, we boarded on time and the flight crew did a great job getting everyone seated. Then the pilots took their time and care to make sure the plane was full de-iced three times as there was a bad ice storm a few hours earlier. The plane ride was smooth and comfortable and even the economy seats had decent room and comfort. Flight Attendant Lisa went above and beyond to make sure I was comfortable - she is outstanding. The only thing wrong with the flight, and it is something which needs to be addressed, is that the gate to gate time was over 6.5 hours and not one meal was served. The only thing offered to eat were two small cookies for a transcontinental flight - unacceptable. Charge me more but give me a meal for a long flight. Thankfully Lisa found something for me.

Very poor. Our special services attendant gave us incorrect information. I also was mishandled at landing. There was no wheelchair waiting. I fell deboarding the plane. Appalling!

I had a very unpleasant encounter with one man from customer service: he was extremely rude and miserable. And his condition was reflected on his decision to send me to the worst airport hotel and get an awful flight connection. My hotel shuttle had never arrived and I had to book another hotel. People served by other representatives got a much better treatment and deal.

The flight left a bit late, but arrived close to time expected…With the flight being close to full the crew did well serving drinks to all in a very timely fashion. The flight was a pleasure…

They didn't have any gluten-free snacks, oddly, which I require...or any flavored soda water or decaf tea options, which seems to be standard.

My flight back my reservations were list because they said I didn't pay my pet fee when I had a receipt

Not having it be changed after we bought the flight tickets from a direct flight getting in at a reasonable time to a connecting flight red eye of 9 hours, so that we would lose our 35 dollars in nonrefundable insurance would've been great! Our country really does need low-cost carrier options, but this type of "service" ain't it. Fortunately, had a little better success with them flying to and from San Juan PR last month at least.

All was good expecting the seats need a bit of cushion. Besides that I can’t complain.

You get what you pay for, and the flights went smoothly. There’s no reclining chairs, no screens, And there isn’t always wifi, but the plane was clean and staff was friendly and the takeoff/landing were smooth.

The only positive is that the flight made it both ways. Getting charged for every little thing after the cost of the ticket itself is comical, considering how the plane and services are as bottom-tier as possible. The self check-in kiosks are useless. It’s nice to think that you can print your boarding pass, tag your checked bag, and then just drop it off. But no, they still make you go through the line once you finish- what’s the point of the self check-in then? Any questions for the staff seem like the biggest inconvenience and were met with condescending responses. This was my first and now last time ever flying with Spirit. After all the extra costs, subpar plane and staff, I see no value. I’d rather drive the 13 hours than give Spirit another dime.

The flight was fine however what started as a reasonable priced ticket could have become an overpriced ticket with additional charge for carry on as well as checked bag $79 per bag per person each way. Additional charge for choosing one’s seat, additional charge for beverage and snack, we were on what was described as a new plane yet there were no audio/visual on the jet. A bare bones service but not at a bare bones price. Will think twice before flying Spirit again. 😕

Flight was delayed a bit, but that was expected (and updated), so really not bad at all for the price. Could’ve used one less email asking me to upgrade my seat; otherwise no significant complaints

I love Spirit. New aircraft, great cabin service, the airfares are low cost which helps me visit my hospitalized daughter anytime I can without paying a fortune.

Flight was 2hours late they had no crew or the pilot.

I paid for streaming wifi and the connection was poor.

We had an 8 hr delay so it was not good

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

Information on your arrival and departure airports

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