SDF - PHL

$92 Find Cheap Flights from Louisville to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Louisville to Philadelphia departing on 10/15. 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

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

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

Cheap Flights from Louisville to Philadelphia (SDF-PHL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville to Philadelphia 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 Louisville to Philadelphia

Wed, Oct 15 - Wed, Oct 22
Spirit Airlines Logo
5:31 pm - 11:36 pmSDF-PHL
6h 05m1 stop
Spirit Airlines Logo
5:33 am - 4:36 pmPHL-SDF
11h 03m1 stop
$183Spirit Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
Spirit Airlines Logo
5:31 pm - 11:36 pmSDF-PHL
6h 05m1 stop
Spirit Airlines Logo
5:33 am - 4:36 pmPHL-SDF
11h 03m1 stop
$188Spirit Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
Multiple Airlines Logo
5:31 pm - 2:48 pmSDF-PHL
21h 17m1 stop
Multiple Airlines Logo
9:14 pm - 10:47 pmPHL-SDF
25h 33m1 stop
$202Multiple Airlines
Find Deal
Fri, Oct 24 - Tue, Oct 28
Multiple Airlines Logo
11:47 am - 11:59 pmSDF-PHL
12h 12m1 stop
Multiple Airlines Logo
6:50 pm - 5:55 pmPHL-SDF
23h 05m1 stop
$206Multiple Airlines
Find Deal
Fri, Oct 17 - Tue, Oct 21
Multiple Airlines Logo
7:15 am - 5:58 pmSDF-PHL
10h 43m1 stop
Multiple Airlines Logo
9:14 pm - 5:55 pmPHL-SDF
20h 41m1 stop
$209Multiple Airlines
Find Deal
Mon, Oct 6 - Tue, Oct 7
Multiple Airlines Logo
11:47 am - 11:59 pmSDF-PHL
12h 12m1 stop
Multiple Airlines Logo
9:14 pm - 5:55 pmPHL-SDF
20h 41m1 stop
$211Multiple Airlines
Find Deal
Wed, Oct 15 - Thu, Oct 23
Multiple Airlines Logo
5:31 pm - 2:48 pmSDF-PHL
21h 17m1 stop
Multiple Airlines Logo
5:33 am - 6:03 pmPHL-SDF
12h 30m1 stop
$216Multiple Airlines
Find Deal
Sun, Oct 19 - Sat, Oct 25
Spirit Airlines Logo
6:58 pm - 9:32 amSDF-PHL
14h 34m1 stop
Spirit Airlines Logo
11:30 am - 10:47 pmPHL-SDF
11h 17m1 stop
$227Spirit Airlines
Find Deal
Wed, Oct 1 - Wed, Oct 8
Spirit Airlines Logo
10:14 am - 1:02 pmSDF-PHL
26h 48m1 stop
Spirit Airlines Logo
5:20 am - 5:55 pmPHL-SDF
12h 35m1 stop
$232Spirit Airlines
Find Deal
Sat, Oct 18 - Sun, Oct 19
American Airlines Logo
6:34 am - 7:21 amSDF-PHL
24h 47m1 stop
American Airlines Logo
9:41 am - 11:52 amPHL-SDF
2h 11mnonstop
$291American Airlines
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
American's Main Cabin Extra offers early boarding.
American's Basic Economy is budget-friendly with carry-on.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Spirit Airlines
Cheapest • from $183 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
June
Cheapest • 22% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$183
Overall average: $513
Spirit Airlines
Wed 10/15Wed 10/22
SDF - PHL • 1 stop
Cheapest non-stop
$469
Typical prices: $499-549
American Airlines
Sat 10/25Tue 10/28
SDF - PHL • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Philadelphia!
Expert advice

Expert advice for your flight from Louisville to Philadelphia

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Qatar Airways

Economy class includes a free checked bag and seatback TV for entertainment.


Business class offers lie-flat seats and potential Qsuite for enhanced privacy.

American Airlines

Consider Main Cabin Extra for early boarding and complimentary drinks on short flights.


Use Basic Economy for budget travel with carry-on only and no changes after 24 hours.

Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Qatar Airways

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Booking Insights

KAYAK's insights & trends for Louisville to Philadelphia flights

Get data-powered insights and trends into flights from Louisville to Philadelphia 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 Louisville to Philadelphia?

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

If you are looking for a flight deal from Louisville to Philadelphia, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Philadelphia, Monday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Louisville to Philadelphia, 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 Louisville to Philadelphia is June, where tickets cost $377 (return) on average. On the other hand, the most expensive months are September and August, where the average cost of round-trip tickets is $674 and $573 respectively.

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

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 $400 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Louisville to Philadelphia, 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 Louisville to Philadelphia, you should book around 3 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$92
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Louisville to Philadelphia

When to book flights from Louisville to Philadelphia

Are your dates flexible? Find out the best times to travel from Louisville to Philadelphia 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 Louisville to Philadelphia

  • What is the cheapest flight from Louisville to Philadelphia?

    In the last 3 days, the lowest price for a flight from Louisville to Philadelphia was $92 for a one-way ticket and $183 for a round-trip.

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

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

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

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

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

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

  • Which airline alliances offer flights from Louisville to Philadelphia?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Louisville to Philadelphia are Southwest and Delta. With an average price for the route of $416 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 $346 and an overall rating of 7.9.

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

    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 Louisville to Philadelphia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Louisville 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 Louisville to Philadelphia?

    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 Philadelphia with an airline and back to Louisville with another airline. Booking your flights between Louisville and PHL 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 Louisville to Philadelphia?

    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 Philadelphia from Louisville 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 Louisville to Philadelphia

  • Looking for a cheap flight? 25% of our users found flights on this route for $208 or less one-way and $453 or less round-trip.

Prefer to fly direct from Louisville to Philadelphia?

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

Direct departures

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

Direct returns

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

Reviews of the top 4 airlines serving from Louisville to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying from Louisville to Philadelphia. 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 Louisville to Philadelphia? 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 4242 reviews
7.5Entertainment
8.0Comfort
8.6Crew
8.1Boarding
7.0Food
Airline reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

10.0 ExcellentG, Sep 2025LAS - ATL
Read more Southwest reviews

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

Southwest's seats are the least comfortable I have ever sat in.

The cabin was quiet for the redeye flight. The area was clean. The staff was great. The 787 Max was in good condition. Drawbacks were that the seat widths were tight for some passengers. The seat padding was at best average and for a long flight uncomfortable.

Southwest like most American domestic airlines, is a mediocre airline. But it is among the cheapest. Oh well.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

Internet was a bit expensive and did not work ask that week otherwise a good flight

The flight had a delay that made me being in a real rush to take the second flight. The delay was almost for 2 hours. They moved us from gate to gate in 4 times. Once I arrived to Philadelphia, I got to run thorough all the airport, as the train was already closed by that time. So I got sick with asthma for all the running I had to do. And I was the last one to board, when it was almost closed. So irresponsable with the people

The plane was probably full boarding was easy. We were able to check our carry-on luggage for free. It was a return flight through Philly to LA. Never saw a stewardess do a demonstration of emergency Procedures. I think my flight was pretty full

Overall, a good experience. The food, however, was subpar. The breakfast was a joke.

I was late from Jacksonville, FL but the limited interaction I had with the Philly crew was great.

The delays and cancellations kept me stuck in Miami for an additional 24 hours, and the whole thing seemed extremely disorganized

Everything was great except British airways lost our luggage that was gate checked all the way through to Italy. No one knows currently where one is and the other one may be in route to Amsterdam to meet us but not sure. If you can Hale’s it would be awesome. The website is not helpful.

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

the pilot that landed this flight in Philadelphia did an amazing job, the weather was absolutely terrible and we landed safely.

Spirit rescheduled a 4:30 PM flight to 8:52 AM. That's ridiculous and borderline fraud.

Everything was fine. I'm average height and I pack light. I'm ready for my Spirit flight.

Changing the flight time to 6:15 am on the return flight is extremely inconvenient. The flight was okay. It was on time. The crew was friendly. The seats were uncomfortable. All the upsells are annoying, and I would prefer paying a single higher fee and not have to purchase so much extra.

Spirit Airlines was ok but TRAVELHELPDESK, the 3rd party travel agent IS A JOKE! VERY RUDE CUSTOMER AGENTS ont he phone. NO HELP AT ALL. But the airlines was ok.

Cancelled my flight last minute and did not help me rebook. It was a horrible experience.

No frills - because you get what you pay for. The crew was amazing!! I had plenty of room to spread out because the flight was half full. Which made it easy to sleep.

The terminal crew is so rude cabin crew is extremely rude flight is very good

Spirit is low fare air line. Food also cost you. No free food.

The flight was delayed twice with minimal explanation. The terminal and airplane were filthy. The food voucher didn’t even cover a tiny pizza from a kiosk in the terminal. All in all, a pretty miserable experience for a flight to attend a funeral

I will use spirit more New clean aircraft Excellent crew ! Quick boarding process !

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

Information on your arrival and departure airports

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