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Delaware

$79+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
SDF — ILG
Apr 29 — May 61
Wed 4/29
Wed 5/6
1 adult, Economy
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Cheap 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 March 30, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/247:48 pm
SDF
-
PHL
1 stop28h 32m
Multiple Airlines
Fri 5/15:45 am
PHL
-
SDF
1 stop13h 13m
Multiple Airlines
Deal found 3/27$180
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Fri 4/247:48 pm
SDF
-
PHL
1 stop14h 01m
Multiple Airlines
Mon 4/277:00 am
PHL
-
SDF
1 stop11h 58m
Multiple Airlines
Deal found 3/30$207
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Fri 4/247:48 pm
SDF
-
PHL
1 stop19h 43m
Multiple Airlines
Wed 4/291:30 pm
PHL
-
SDF
2 stops22h 00m
Multiple Airlines
Deal found 3/29$209
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Mon 4/207:48 pm
SDF
-
PHL
1 stop24h 52m
Multiple Airlines
Mon 4/277:00 am
PHL
-
SDF
1 stop11h 58m
Multiple Airlines
Deal found 3/29$211
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Mon 4/207:48 pm
SDF
-
PHL
1 stop24h 52m
Multiple Airlines
Sat 4/255:32 pm
PHL
-
SDF
1 stop23h 32m
Multiple Airlines
Deal found 3/29$212
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Mon 4/207:48 pm
SDF
-
PHL
1 stop24h 52m
Multiple Airlines
Wed 4/291:30 pm
PHL
-
SDF
2 stops22h 00m
Multiple Airlines
Deal found 3/29$213
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Fri 4/247:48 pm
SDF
-
PHL
1 stop19h 43m
Multiple Airlines
Sun 4/267:45 am
PHL
-
SDF
1 stop9h 19m
Multiple Airlines
Deal found 3/29$215
This CheapOair deal was found by Cheapflights users on 3/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:06 pm
SDF
-
PHL
1 stop15h 43m
Spirit Airlines
Sun 5/35:45 am
PHL
-
SDF
1 stop27h 43m
Spirit Airlines
Deal found 3/27$216
This Kiwi.com deal was found by Cheapflights users on 3/30. 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.
Mon 4/137:48 pm
SDF
-
PHL
1 stop12h 51m
Multiple Airlines
Thu 4/165:32 pm
PHL
-
SDF
1 stop23h 32m
Multiple Airlines
Deal found 3/30$219
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Mon 4/207:48 pm
SDF
-
PHL
1 stop24h 52m
Multiple Airlines
Fri 4/246:12 pm
PHL
-
SDF
1 stop22h 52m
Multiple Airlines
Deal found 3/29$220
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/207:48 pm
SDF
-
PHL
1 stop14h 01m
Multiple Airlines
Wed 4/226:12 pm
PHL
-
SDF
1 stop22h 52m
Multiple Airlines
Deal found 3/27$221

Find flight deals from Louisville to Delaware

Keep the following information in mind while searching for Louisville to Delaware flight deals. Data was last updated March 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$180
(Kiwi.com)

One-way from

$79
(Kiwi.com)

Popular in

January

Cheapest in

June

Average price

$579
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. 8% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 30, 2026.
Use the filters below to find and compare flights from Louisville to Delaware that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Sat 4/25

5:35 am-3:45 pm

2 stops10h 10m

Philadelphia

Sat 5/2

6:50 am-4:15 pm

2 stops9h 25m

$385
Quickest round-trip

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Fri 7/10

6:05 pm-12:20 am

1 stop6h 15m

Philadelphia

Sun 7/12

12:25 pm-4:50 pm

1 stop4h 25m

$437

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Thu 8/6

6:45 am-3:25 pm

2 stops8h 40m

Philadelphia

Mon 8/10

12:45 pm-8:30 pm

2 stops7h 45m

$447

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Tue 9/15

5:30 am-2:20 pm

2 stops8h 50m

Philadelphia

Thu 9/17

10:20 am-6:30 pm

2 stops8h 10m

$458

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Fri 6/19

3:35 pm-12:20 am

2 stops8h 45m

Philadelphia

Mon 6/22

12:50 pm-10:25 pm

2 stops9h 35m

$458

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Fri 6/19

3:35 pm-12:20 am

2 stops8h 45m

Philadelphia

Sun 6/21

5:30 am-1:05 pm

1 stop7h 35m

$459

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Fri 6/12

3:35 pm-12:20 am

2 stops8h 45m

Philadelphia

Mon 6/15

6:05 am-2:55 pm

2 stops8h 50m

$473

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Thu 5/14

8:40 am-5:15 pm

2 stops8h 35m

Philadelphia

Mon 5/18

12:45 pm-9:00 pm

2 stops8h 15m

$484

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Wed 7/1

7:25 am-5:25 pm

2 stops10h 00m

Philadelphia

Mon 7/6

6:05 am-2:55 pm

2 stops8h 50m

$503
Cheapest one-way

LouisvillePhiladelphia

SDF - PHL

SDFPHL

Louisville Intl

Sat 4/25

8:40 am-3:05 pm

1 stop6h 25m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 18 resultsSorted by cheapest first
1
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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 10h 10m. The distance between Louisville and Delaware is about 575 mi.

  • 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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