$172 Cheap Delta flights Phoenix (PHX) to Louisville (SDF)

Finding cheap one-way Delta Air Lines flights from PHX to SDF from $172 on Expedia is a breeze — just filter by “Price (lowest to highest).” Or check out our budget-friendly round-trip fares from $304 for your next adventure.**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.

Delta Air Lines flights to Louisville are typically cheaper in the quieter months of January and December. Whether you need a return or one-way ticket, you could land a better deal then.

Begin your search one to three months ahead of your departure date to score cheaper fares on Delta Air Lines flights from Sky Harbor Intl. Airport (PHX) 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 journeys.*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.

Simply enter your dates, click search and select “Nonstop” on Expedia to browse any direct flights from PHX to SDF with Delta Air Lines or other airlines.

To find the earliest departures from PHX to SDF with Delta Air Lines, filter your search by “Early Morning” and “Morning.” Booking an early flight generally means 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.

Louisville Intl. Airport (SDF) is the primary Louisville gateway for Delta Air Lines flights from Sky Harbor Intl. Airport (PHX).

Offering a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a top choice for many travelers heading from PHX to SDF. Also, if you’re a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which you can put toward future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s usually possible to cancel or reschedule your flight, although there may be a charge if you booked over 24 hours ago. Need flexible options? Use our “Changes included” or “No cancel fee” filter to find flights that won’t charge extra if you have to adjust your plans. To make changes, head to “Trips,” select your flight and click on “Manage Booking” for further information.