SDF - PHL

$87 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 2/28. 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

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
Travelers love KAYAK
41 299 237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$185
Overall average: $499
Spirit Airlines
Thu 3/12Tue 3/24
SDF - PHL • 1 stop
Cheapest non-stop
$445
Typical prices: $469-$579
American Airlines
Tue 3/3Tue 3/24
SDF - PHL • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
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 $185 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
June
Cheapest • 25% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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!
Flight Deals
Booking Insights
Expert advice
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

Thu, Mar 12 - Tue, Mar 24
Spirit Airlines Logo
3:33 pm - 12:16 am
SDF
-
PHL
8h 43m
1 stop
Spirit Airlines Logo
6:21 am - 12:19 pm
PHL
-
SDF
5h 58m
1 stop
$185Spirit Airlines
Tue, Mar 3 - Tue, Mar 24
Spirit Airlines Logo
3:33 pm - 7:52 pm
SDF
-
PHL
28h 19m
1 stop
Spirit Airlines Logo
5:21 pm - 11:14 am
PHL
-
SDF
17h 53m
1 stop
$213Spirit Airlines
Thu, Mar 12 - Sun, Mar 15
Spirit Airlines Logo
3:33 pm - 12:16 am
SDF
-
PHL
8h 43m
1 stop
Spirit Airlines Logo
5:21 pm - 11:08 am
PHL
-
SDF
17h 47m
1 stop
$234Spirit Airlines
Sat, Feb 28 - Sun, Mar 1
Multiple Airlines Logo
12:00 pm - 12:21 am
SDF
-
PHL
12h 21m
1 stop
Multiple Airlines Logo
6:05 pm - 8:40 am
PHL
-
SDF
14h 35m
1 stop
$241Multiple Airlines
Thu, Mar 12 - Tue, Mar 24
Spirit Airlines Logo
3:33 pm - 12:16 am
SDF
-
PHL
8h 43m
1 stop
Spirit Airlines Logo
6:08 pm - 11:08 am
PHL
-
SDF
17h 00m
2 stops
$244Spirit Airlines
Thu, Mar 12 - Sun, Mar 15
Spirit Airlines Logo
3:33 pm - 11:56 pm
SDF
-
PHL
8h 23m
1 stop
Spirit Airlines Logo
6:08 pm - 11:14 am
PHL
-
SDF
17h 06m
2 stops
$247Spirit Airlines
Fri, Apr 17 - Mon, Apr 20
Multiple Airlines Logo
7:48 pm - 8:44 am
SDF
-
PHL
12h 56m
1 stop
Multiple Airlines Logo
5:28 pm - 2:38 pm
PHL
-
SDF
21h 10m
1 stop
$251Multiple Airlines
Fri, Feb 20 - Sun, Feb 22
Multiple Airlines Logo
1:19 pm - 9:59 pm
SDF
-
PHL
8h 40m
1 stop
Multiple Airlines Logo
5:51 pm - 8:40 am
PHL
-
SDF
14h 49m
1 stop
$265Multiple Airlines
Sat, Feb 21 - Sat, Feb 28
Multiple Airlines Logo
12:00 pm - 10:07 pm
SDF
-
PHL
10h 07m
2 stops
Multiple Airlines Logo
7:07 pm - 1:26 pm
PHL
-
SDF
18h 19m
1 stop
$272Multiple Airlines
Fri, Feb 20 - Sun, Feb 22
Multiple Airlines Logo
1:19 pm - 9:59 pm
SDF
-
PHL
8h 40m
1 stop
Multiple Airlines Logo
5:51 pm - 8:40 am
PHL
-
SDF
14h 49m
1 stop
$273Multiple Airlines
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 Saturdays 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 December and August, where the average cost of round-trip tickets is $593 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 4 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Expert advice

Expert advice for your flight from Louisville to Philadelphia

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Qatar Airways

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.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

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.

Good to know

Low seasonJanuary
Cheapest flight$87
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 18% 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 $87 for a one-way ticket and $185 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, Delta, and JetBlue offer inflight Wi-Fi service on the Louisville to Philadelphia flight route.

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

    The Embraer ERJ-145 is the aircraft model that flies most regularly on the Louisville to Philadelphia flight route.

  • Which airline alliances offer flights from Louisville to Philadelphia?

    SkyTeam, and oneworld are the airline alliances operating flights between Louisville and Philadelphia, with SkyTeam being the most commonly used for this route.

  • 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 $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 $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 $436 or less one-way and $349 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 4267 reviews
8.1Boarding
7.0Food
7.5Entertainment
8.0Comfort
8.6Crew
Airline reviews

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled. No snack or drink on this flight.

10.0 ExcellentJoseph, Jan 2026
BWI - RIC
Read more Southwest reviews

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled. No snack or drink on this flight.

WIFI was great. My selection for seating is an aisle, but during my trip, I never had an aisle seat. If we can get that corrected, I will be thrilled.

The wifi on the plane is great. The only issue that I have is that I prefer an aisle seat and on my trips this week, I was either in the middle or window. If we can work to secure aisle seating, I will be thrilled. Nice trip.

All good except once again bags took an hour at Midway Airport Happens all the time. Ridiculous

Everything went smoothly and we even arrived a little bit early.

Great vacation. Can't wait till next year for another one.

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

The seats were comfortable, and the boarding process was pretty smooth.

3 hour delay. Had to change plans and was still delayed.

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

The attendants were kind and helpful. A sugar-free drink would have been very welcome.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

The seat cushions were very worn so they were extremely uncomfortable.

Crew were all friendly and helpful. It was a short flight so just a beverage service with a cookie. After we were boarded the plane took about 45 minutes to leave the gate but it was New Year’s Eve so not shocking there was some delay. Overall good experience and very grateful.

the trip to madrid was uncomfortable with my legs touching the seat in front of me

Very crowded flight but what can you expect these days?? Crew was accommodating.

The seats in economy were appeared to be quite thin and lack sufficient cushioning to be comfortable. Perhaps it was my seating position but the plane seemed notably load.

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

It was smooth sailing snags we had a really smooth landing and a great flight!

The entire experience was so surprisingly pleasant. And the blocked extra seat between us was such an amazing and nice bonus. Great experience all around and I can’t wait to fly with spirit again!

Everything was OK, the deicing took a long time, our connections were almost missed.

All very good except they didn’t load our walker so haven’t gotten it yet

Flight was cancelled. But kayak thought it was still on time.

For the cost you can't e too critical, but the inablitiy to recline the seat and minimal cushioning in the seats made for a less than comfortable flight. Other than that we had an ealry departure and arrival, boarding was smooth.

The flight was delayed by 2 hours and we had no food or water or chargers

Spirit was on time. They maintained updates and information. The crew was friendly and professional. Because this is a budget friendly airline, they have dispensed with a lot of frills and part of that comes with a price, for example, the seats are not quite as comfortable as others. I am ok with a pay for beverage and snack service as I prefer my own anyway so this was not a concern. I thought overall, having a great flight crew and on time service was definitely worth losing some of the frills from other carriers.

Nothing everything cost money a bottle of water is 5 dollars and there wasn't even an outlet to plug 🔌 in my 📱 phone

You can’t beat Spirit’s prices on tickets, especially with the positive experience that comes with it! I appreciated the timeliness of Spirit airlines. The crew in the airport was very kind and wished you a good flight by name. The crew on the flight was attentive and friendly. Overall, I am very pleased with my experience with Spirit.

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

Information on your arrival and departure airports