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Delaware

$89+ Cheap flights from Louisville (SDF) to Delaware

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ILG
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Louisville to Delaware

Cheapest flights from Louisville to Delaware
Explore the most affordable flight options available from Louisville to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:55 pmSDF - PHL
1 stop19h 13mMultiple Airlines
Fri 11/145:05 amPHL - SDF
1 stop13h 11mMultiple Airlines
Deal found 10/30$213
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:55 pmSDF - PHL
1 stop19h 13mMultiple Airlines
Thu 11/132:39 pmPHL - SDF
1 stop18h 25mMultiple Airlines
Deal found 10/30$232
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:55 pmSDF - PHL
1 stop19h 13mMultiple Airlines
Wed 11/196:50 pmPHL - SDF
2 stops23h 03mMultiple Airlines
Deal found 10/30$233
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:48 pmSDF - PHL
1 stop28h 54mMultiple Airlines
Sun 11/239:00 amPHL - SDF
1 stop10h 36mMultiple Airlines
Deal found 10/30$235
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/272:55 pmSDF - PHL
1 stop19h 45mMultiple Airlines
Mon 12/16:41 pmPHL - SDF
2 stops23h 12mMultiple Airlines
Deal found 10/29$245
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:55 pmSDF - PHL
1 stop19h 13mMultiple Airlines
Mon 11/176:00 amPHL - SDF
1 stop12h 16mMultiple Airlines
Deal found 10/30$247
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:48 pmSDF - PHL
1 stop28h 29mMultiple Airlines
Mon 12/18:54 pmPHL - SDF
1 stop20h 59mMultiple Airlines
Deal found 10/28$251
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/219:38 amSDF - PHL
1 stop14h 04mMultiple Airlines
Sun 11/239:00 amPHL - SDF
1 stop23h 33mMultiple Airlines
Deal found 10/27$254
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:55 pmSDF - PHL
1 stop19h 13mMultiple Airlines
Thu 11/2012:52 pmPHL - SDF
2 stops19h 56mMultiple Airlines
Deal found 10/30$255
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:11 pmSDF - PHL
1 stop19h 04mSpirit Airlines
Wed 11/123:10 pmPHL - SDF
1 stop27h 06mSpirit Airlines
Deal found 10/27$265

Cheap flight deals from Louisville to Delaware

Keep the following information in mind while searching for Louisville to Delaware flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$235
(Kiwi.com)

One-way from

$90
(CheapOair)

Popular in

August

Cheapest in

June

Average price

$522
Provider with most accurate pricing for Louisville Intl-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Louisville Intl-Philadelphia flights.
Search Deals
From Louisville Intl to Delaware
Search Deals
One-way flight from Louisville Intl to Delaware
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisville to Delaware that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Louisville to Delaware that are best for you.

Fly from

Louisville

Fly to

Delaware

Route

Depart

Return

Price

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Thu 11/27

2:55 pm-10:40 am

1 stop19h 45m

Philadelphia

Mon 12/1

6:41 pm-5:53 pm

2 stops23h 12m

$245

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Mon 1/12

6:45 am-5:25 pm

2 stops10h 40m

Philadelphia

Thu 1/15

5:50 am-5:10 pm

2 stops11h 20m

$351

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Sun 2/15

6:32 am-2:43 pm

1 stop8h 11m

Philadelphia

Tue 2/17

12:21 pm-9:24 pm

1 stop9h 03m

$356

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Sun 2/15

6:55 am-4:30 pm

2 stops9h 35m

Philadelphia

Tue 2/17

5:50 am-12:10 pm

1 stop6h 20m

$381

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Fri 2/13

6:30 am-5:40 pm

2 stops11h 10m

Philadelphia

Tue 2/17

6:20 pm-11:00 pm

1 stop4h 40m

$381

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Thu 12/25

6:27 am-5:55 pm

1 stop11h 28m

Philadelphia

Sun 12/28

8:30 am-10:54 am

Nonstop2h 24m

$382

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Thu 12/25

2:55 pm-11:15 pm

1 stop8h 20m

Philadelphia

Sun 12/28

6:53 pm-11:59 pm

2 stops29h 06m

$384

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Wed 2/11

11:50 am-9:55 pm

2 stops10h 05m

Philadelphia

Mon 2/16

5:15 am-3:55 pm

2 stops10h 40m

$386

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Tue 12/23

6:03 am-2:44 pm

1 stop8h 41m

Philadelphia

Sat 12/27

7:12 pm-9:41 pm

Nonstop2h 29m

$447

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Thu 12/4

11:45 am-5:35 pm

1 stop5h 50m

Philadelphia

Fri 12/5

11:40 am-4:35 pm

1 stop4h 55m

$456

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 19 results
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Best time to book a flight from Louisville to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from Louisville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Louisville to Delaware
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Louisville to Delaware. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Louisville to Delaware?

    Louisville Intl (SDF), located 5.3 mi from the city center, is the airport you fly out of when you book flights from Louisville to Delaware.

  • How long is the flight from Louisville to Delaware?

    Departing from Louisville to Delaware will take you 8h 11m. The distance between Louisville and Delaware is about 575 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Louisville to Delaware that include hotel bookings?

    Yes. In addition to deals on Louisville to Delaware flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Louisville to Delaware?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Louisville to Delaware.

  • Can I find deals for business class flights from Louisville to Delaware?

    Yes. Cheapflights offers flight deals from Louisville to Delaware by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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