SDF - PHL

$101 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 8/9. 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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Flights 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, Aug 13 - Thu, Aug 21
Southwest Logo
6:00 am - 2:30 pmSDF-PHL
8h 30m1 stop
Southwest Logo
4:25 pm - 10:50 pmPHL-SDF
6h 25m1 stop
$216Southwest
Find Deal
Mon, Sep 22 - Sun, Sep 28
Spirit Airlines Logo
9:06 am - 9:11 pmSDF-PHL
12h 05m1 stop
Spirit Airlines Logo
9:00 am - 8:11 amPHL-SDF
23h 11m1 stop
$219Spirit Airlines
Find Deal
Wed, Jul 23 - Thu, Jul 24
 Logo
9:46 am - 11:30 pmSDF-PHL
13h 44m1 stop
 Logo
6:13 am - 5:58 pmPHL-SDF
11h 45m1 stop
Sat, Jul 19 - Sun, Jul 20
 Logo
10:54 am - 11:30 pmSDF-PHL
12h 36m2 stops
 Logo
6:13 am - 5:58 pmPHL-SDF
11h 45m1 stop
Tue, Sep 23 - Wed, Oct 1
United Airlines Logo
9:05 am - 12:20 amSDF-PHL
15h 15m1 stop
United Airlines Logo
6:42 pm - 10:01 amPHL-SDF
15h 19m1 stop
$373United Airlines
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Sat, Aug 30 - Tue, Sep 2
American Airlines Logo
2:49 pm - 12:24 amSDF-PHL
9h 35m1 stop
American Airlines Logo
2:18 pm - 11:02 pmPHL-SDF
8h 44m1 stop
$379American Airlines
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Thu, Sep 25 - Mon, Sep 29
Delta Logo
7:00 am - 6:20 pmSDF-PHL
11h 20m1 stop
Delta Logo
7:00 am - 4:50 pmPHL-SDF
9h 50m1 stop
$385Delta
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Sat, Sep 20 - Wed, Oct 1
United Airlines Logo
7:00 am - 5:21 pmSDF-PHL
10h 21m1 stop
United Airlines Logo
6:42 pm - 10:01 amPHL-SDF
15h 19m1 stop
$410United Airlines
Find Deal
Fri, Sep 19 - Tue, Sep 30
Delta Logo
7:30 pm - 9:26 amSDF-PHL
13h 56m1 stop
Delta Logo
2:40 pm - 10:30 pmPHL-SDF
7h 50m1 stop
$415Delta
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Thu, Aug 14 - Mon, Aug 18
American Airlines Logo
1:10 pm - 9:47 pmSDF-PHL
8h 37m1 stop
American Airlines Logo
7:14 pm - 9:38 pmPHL-SDF
2h 24mnonstop
$417American Airlines
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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
Useful Info

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 Saturdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Philadelphia, Thursday is the cheapest day to fly and Tuesday 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 $378 (return) on average. On the other hand, the most expensive months are October and September, where the average cost of round-trip tickets is $513 and $500 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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonMarch
High seasonJuly
Cheapest flight$101
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 5% increase in price.
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 $101 for a one-way ticket and $216 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 $435 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 $356 and an overall rating of 8.0.

  • 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 $255 or less one-way and $355 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

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

Direct returns

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

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 4278 reviews
7.6Entertainment
8.6Crew
8.2Boarding
7.1Food
8.0Comfort
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

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.

I like for how they process during check in. It was very smoothly.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

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.

The flight was just perfect! We left a few minutes early, had a smooth flight and fortunately had landed before the terrible accident that took off from North Philadelphia airport shortly thereafter.

Timely boarding process, made up for lost time even after a lengthy wait for de-icing

It was absolutely awesome. The crew was welcoming to all, not just the first class. They were full of energy. The in-cabin music was an excellent choice, not boring like most airlines. We were ready for takeoff ahead of time. Pilots were great. Smooth takeoff and landing. The plane was beautiful and nicely cleaned. This was truly a fantastic flight. I fly Delta and American all the time. I was apprehensive about Spirit. I will definitely be looking for Spirit first. Thanks for a great experience.

Didn't like size of seats. Found charges for checked luggage and carry on too high

Great! We boarded on time! Everything went so smoothly! The flight was so smooth

Spirit gets you there; it's no worse than any other aircraft, all things considered. (It's not like everyone else is such a hero). But - holy moses - do they nickel and dime you to absolutely every nickel - I was really expecting to have to pay to use the bathroom. And when the captain comes on with a 5 minute sales pitch about getting "points", that was like something on Bizarro world. Other than that, everyone else was professional and worked hard to get us from point A to point B. I'm not loving all the "self-service" stuff but there it is - just when the machines don't work you don't have anyone to talk to.

Boarding was a breeze, however, two of the flights that I boarded with Spirit did not have Wi-Fi available.

Seats uncomfortable, hard to check luggage, etc. It was like the last flight out of Hanoi

Need screens for tv/movies. Seats are more cramped than any other airlines. Seats are hard. They don’t recline. And in flight time should not be used for sales pitches.

Good experience except for the drunk woman who was with a child. Sad

The ease of booking the flight was very good. Speaking with customer service was also good. However, the crew people are unfriendly and unwelcoming which I found this as unprofessional. As far as comfort it was mediocre. This was my first time flying Spirit and I chose them because of the flight times met my needs and my budget. However, I would be reluctant to fly on Spirit again. In addition, if the crew were more friendly and at least appeared somewhat happy and welcoming personally it would probably make the experience of flying with Spirit better.

Tell them to chose a better, less bumpy route :( my seat had no window all the way at the end 😔

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

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