$132 Cheap Delta flights Philadelphia (PHL) to Louisville (SDF)

Set the “Price (lowest to highest)” filter on Expedia to search for cheap Delta Air Lines return flights from $262 from PHL to SDF. Affordable one-way tickets from $132 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for return or one-way flights to Louisville in January or December. You could find an affordable fare with Delta Air Lines during these off-peak travel months.

Start searching one to three months ahead of your departure date to find cheap fares on Delta Air Lines flights from Philadelphia Intl. Airport (PHL) to Louisville Intl. Airport (SDF). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Nail your timing, and you can enjoy significant savings on domestic flights.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To see if there’s a direct journey from PHL to SDF with Delta Air Lines or another airline, use our “Nonstop” filter when searching for tickets.

Sort your results by “Early Morning” and “Morning” to find the earliest flights from PHL to SDF. Setting off early means flight cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Delta Air Lines flights from Philadelphia Intl. Airport (PHL) to Louisville touch down at Louisville Intl. Airport (SDF). This is the main entry point to this destination.

Delta Air Lines makes traveling from PHL to SDF enjoyable with a rewarding loyalty program and an excellent in-flight experience. You could even start collecting points with Delta SkyMiles. Don’t forget to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are typically free within 24 hours of making a booking, but your airline may charge you after that time. For further information about altering your flights, check out your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to update your itinerary without additional charges, tick the “No cancel fee” or “Changes included” filter when planning your next getaway.