SDF - PHL

$120 Find Cheap Flights from Louisville to Philadelphia - 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 Louisville to Philadelphia departing on 8/20. 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
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

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Everything you should know

Cheapest round-trip
$253
Typical prices: $780-$469
American Airlines
Fri 7/3Fri 7/3
SDF - PHL • Non-stop
Cheapest non-stop
$480
Typical prices: $573-$469
American Airlines
Fri 7/3Fri 7/3
SDF - PHL • Non-stop
Top airlines
Cheapest • from $253 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with American Airlines. Average duration is 2h 03m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Cheapest • Avg $276 (round-trip)
Shortest trip • 3h 56m (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 27% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 8% price drop
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

Fri, Jul 3 - Fri, Jul 3
American Airlines Logo
12:12 pm - 2:20 pm
SDF
-
PHL
2h 08mnonstop
American Airlines Logo
3:29 pm - 9:40 pm
PHL
-
SDF
6h 11m
1 stop
$253American Airlines
Thu, Aug 27 - Sun, Aug 30
Multiple Airlines Logo
11:12 am - 1:16 am
SDF
-
PHL
14h 04m
1 stop
Multiple Airlines Logo
4:24 pm - 8:48 pm
PHL
-
SDF
28h 24m
1 stop
$303Multiple Airlines
Mon, Aug 10 - Wed, Aug 12
Southwest Logo
3:20 pm - 10:00 pm
SDF
-
PHL
6h 40m
1 stop
Southwest Logo
1:45 pm - 8:35 pm
PHL
-
SDF
6h 50m
1 stop
$311Southwest
Mon, Aug 10 - Wed, Aug 12
Southwest Logo
2:15 pm - 10:00 pm
SDF
-
PHL
7h 45m
2 stops
Southwest Logo
1:45 pm - 8:35 pm
PHL
-
SDF
6h 50m
1 stop
$317Southwest
Thu, Aug 27 - Sun, Aug 30
Multiple Airlines Logo
11:12 am - 1:16 am
SDF
-
PHL
14h 04m
1 stop
Multiple Airlines Logo
4:35 pm - 10:29 am
PHL
-
SDF
17h 54m
2 stops
$335Multiple Airlines
Sat, Jul 25 - Thu, Jul 30
Multiple Airlines Logo
8:06 pm - 12:22 pm
SDF
-
PHL
16h 16m
2 stops
Multiple Airlines Logo
2:59 pm - 7:58 pm
PHL
-
SDF
28h 59m
1 stop
$336Multiple Airlines
Sat, Jul 25 - Thu, Jul 30
Multiple Airlines Logo
1:02 pm - 8:06 pm
SDF
-
PHL
7h 04m
1 stop
Multiple Airlines Logo
2:59 pm - 7:58 pm
PHL
-
SDF
28h 59m
1 stop
$339Multiple Airlines
Sat, Jul 4 - Tue, Jul 7
Multiple Airlines Logo
1:02 pm - 8:11 pm
SDF
-
PHL
7h 09m
1 stop
Multiple Airlines Logo
4:30 pm - 8:36 am
PHL
-
SDF
16h 06m
2 stops
$340Multiple Airlines
Sat, Jul 11 - Tue, Jul 14
Multiple Airlines Logo
1:02 pm - 8:06 pm
SDF
-
PHL
7h 04m
1 stop
Multiple Airlines Logo
2:59 pm - 11:26 am
PHL
-
SDF
20h 27m
1 stop
$343Multiple Airlines
Tue, Jul 21 - Tue, Jul 28
Southwest Logo
4:15 pm - 9:25 pm
SDF
-
PHL
5h 10m
1 stop
Southwest Logo
12:55 pm - 9:45 pm
PHL
-
SDF
8h 50m
2 stops
$344Southwest
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.

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

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

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 Tuesday, as it's usually the priciest day. When flying back from Philadelphia, Saturday 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 April, where tickets cost $509 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is $594 and $593 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 1 stop layover the cheapest option at $558 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 5 weeks before departure, which saves you about 27% 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$120
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly with an average 3% 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 5 days, the lowest price for a flight from Louisville to Philadelphia was $120 for a one-way ticket and $253 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, JetBlue, 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 American Airlines?

    The two airlines most popular with KAYAK users for flights from Louisville to Philadelphia are Southwest and American Airlines. With an average price for the route of $426 and an overall rating of 7.9, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $573 and an overall rating of 7.1.

  • 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 $334 or less one-way and $481 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 airlines flying 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.
7.9
SouthwestOverall score based on 4235 reviews
8.1Boarding
7.0Food
8.0Comfort
7.5Entertainment
8.6Crew
Airline reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

2.0 MediocreMatthew, Jun 2026
CVG - MDW
Read more Southwest reviews

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

The seats. The seat in front of me was awful and when the guy sat down, it flew back and hit my head when I was putting my backpack under the seat, It didn't make for a pleasant experience,

Cancelled flight. Still waiting to get home for grand daughter’s graduation .

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

As we approached Denver, we encountered quite a bit of turbulence. I know this can sometimes be the case as I frequently fly this route but not on American. My gripe: Usually a pilot or co-pilot alerts passengers to the possibility of turbulance ahead of time. This did not occur nor did he communiucate during what was a pretty rough ride.

When I booked my flight a month ago - I selected a seat. That seat was NOT the one I ended up with when I checked into my flight the day before. This is the second time this has occurred. So, I checked my next flight on Wednesday and Thursday and no seat was assigned. Poor, very poor customer service.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

I very rarely fly American and my experience today reenforces that is the correct decision. While the staff were all very courteous, our flight was first thing in the morning so there was no reason to be delayed, yet appropriate maintenance checks weren’t completed prior to our flight so we were delayed multiple times. Not a great showing, American Airlines.

Boarding is always an ordeal. Less dogs on flights. I am highly allergic to dogs and cats. Why are there so many animals these days?

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

Information on your arrival and departure airports