$109 Cheap Delta flights Newark Liberty Intl. Airport (EWR) to Louisville (SDF)

Grab affordable round-trip Delta Air Lines flights from $178 from EWR to SDF by organizing your results from “Price (lowest to highest)” on Expedia. Or search for options from $109 for a one-way trip.**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.

Search for one-way or round-trip flights to Louisville in January or December. You could find lower fares with Delta Air Lines during these off-peak travel months.

Look for cheap Delta Air Lines flights from Liberty Intl. Airport (EWR) to Louisville Intl. Airport (SDF) one to three months before your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and itinerary, the best day of the week to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**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.

Enter your dates, hit search and select “Nonstop” on Expedia to browse any direct flights from EWR to SDF with Delta Air Lines or another carrier.

Browse Delta Air Lines’s earliest flights from EWR to SDF by checking the “Morning” and “Early Morning” filters. Not only will you arrive at your destination sooner, early departures also experience 20% fewer cancellations.**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.

Louisville Intl. Airport (SDF) is the primary Louisville hub for Delta Air Lines flights from Liberty Intl. Airport (EWR).

Flying from EWR to SDF with Delta Air Lines means enjoying a range of perks, such as an excellent in-flight experience and a rewarding loyalty program. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That’s on top of the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are usually free within 24 hours of making your booking, but your airline may charge a fee after that time. For more information about altering your reservation, go to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to change your plans without additional charges, tick the “Changes included” and “No cancel fee” filters when planning your trip.