$90 Cheap Delta flights Washington (IAD) to Louisville (SDF)

View $90 flight on Tue, Sep 23, 2025Opens in a new window

$90 Cheap Delta flights Washington (IAD) to Louisville (SDF)

Prices were available within the past 7 days and start at $90 for one-way flights and $191 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Sep 23 - Fri, Sep 26
IAD
Washington
SDF
Louisville
$191 Roundtrip, found 6 days ago
$191
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Sep 23 from Washington to Louisville, returning Fri, Sep 26, priced at $191 found 6 days ago
Delta
Sun, Aug 24 - Sun, Aug 31
IAD
Washington
SDF
Louisville
$226 Roundtrip, found 1 day ago
$226
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Aug 24 from Washington to Louisville, returning Sun, Aug 31, priced at $226 found 1 day ago
Delta
Wed, Aug 6 - Sun, Aug 10
IAD
Washington
SDF
Louisville
$228 Roundtrip, found 21 hours ago
$228
Roundtrip
found 21 hours ago
Select Delta flight, departing Wed, Aug 6 from Washington to Louisville, returning Sun, Aug 10, priced at $228 found 21 hours ago
Delta
Thu, Aug 7 - Tue, Aug 12
IAD
Washington
SDF
Louisville
$231 Roundtrip, found 16 hours ago
$231
Roundtrip
found 16 hours ago
Select Delta flight, departing Thu, Aug 7 from Washington to Louisville, returning Tue, Aug 12, priced at $231 found 16 hours ago
Delta
Sun, Sep 21 - Tue, Sep 23
IAD
Washington
SDF
Louisville
$232 Roundtrip, just found
$232
Roundtrip
just found
Select Delta flight, departing Sun, Sep 21 from Washington to Louisville, returning Tue, Sep 23, priced at $232 just found
Flights from Washington (IAD) to Louisville (SDF)
Origin airport
Washington Dulles Intl.
Destination airport
Louisville Intl.
Airlines serving
American Airlines, Delta, United
Popular airline
United
Distance
451 mi
Average flight time
1 hour 49 mins

Frequently asked questions

How much is a Delta Air Lines flight from Washington Dulles Intl. Airport (IAD) to Louisville Intl. Airport (SDF)?
Set the "Price (lowest to highest)" filter on Expedia to find cheap Delta Air Lines return flights from $191 from IAD to SDF. Affordable one-way options from $90 are available as well.**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.
What is the cheapest month to fly from IAD to SDF with Delta Air Lines?
Look for one-way or round-trip flights to Louisville in January or December. You could find cheaper fares with Delta Air Lines during these off-season months.
What is the cheapest time to book flights from Washington Dulles Intl. Airport (IAD) to Louisville Intl. Airport (SDF) with Delta Air Lines?
Look for cheap Delta Air Lines flights from Washington Dulles Intl. Airport (IAD) to Louisville Intl. Airport (SDF) one to three months prior to 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 journey, the best day to book a domestic flight is generally Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel 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.
Does Delta Air Lines fly nonstop from Washington Dulles Intl. Airport (IAD) to Louisville Intl. Airport (SDF)?
Enter your dates, press search and select the "Nonstop" filter on Expedia to find any direct flights from IAD to SDF with Delta Air Lines or other airlines.
What is the earliest Delta Air Lines flight from IAD to SDF?
Sort your results by "Early Morning" and "Morning" to browse the earliest departures from IAD to SDF. Taking off early means you're less likely to experience 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.
What airports does Delta Air Lines fly into in Louisville?
Delta Air Lines flights from Washington Dulles Intl. Airport (IAD) to Louisville touch down at Louisville Intl. Airport (SDF). This is the main gateway to this city.
Why fly with Delta Air Lines from IAD to SDF?
Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is a favorite for many travelers heading from IAD to SDF. Also, if you're a Delta SkyMiles and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Washington Dulles Intl. Airport (IAD) to Louisville Intl. Airport (SDF)?
Depending on the type of ticket you purchased, a fee will generally apply if you modify or cancel your booking more than 24 hours after it's confirmed. To find flexible plane tickets, select our "Changes included" or "No cancel fee" filter when searching for flights. For additional information on canceling or changing your reservation, visit "Trips," select your flight and click on "Manage Booking."

Explore a world of travel with Expedia

*Available to One Key members.