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Delaware

$118+ Cheap flights from San Diego (SAN) 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ILG
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from San Diego to Delaware

Keep the following information in mind while searching for San Diego to Delaware flight deals. Data was last updated September 16, 2025.

Round-trip from

$213
(Cheapflightsfares)

One-way from

$118
(Frontier)

Popular in

December

Cheapest in

August

Average price

$442
From San Diego to Delaware
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One-way flight from San Diego to Delaware
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Highest demand for flights based on searches. 7% potential increase in price ($37 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Diego to Delaware

Cheapest flights from San Diego to Delaware
Explore the most affordable flight options available from San Diego to Delaware. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:00 pmSAN - PHL
1 stop7h 49mFrontier
Mon 11/106:19 amPHL - SAN
1 stop7h 58mFrontier
Deal found 9/14$213
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/306:00 pmSAN - PHL
1 stop7h 49mFrontier
Thu 11/64:55 pmPHL - SAN
1 stop8h 19mFrontier
Deal found 9/15$217
This Booking.com deal was found by Cheapflights users on 9/14. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:15 amSAN - PHL
1 stop13h 28mFrontier
Sat 9/276:45 amPHL - SAN
1 stop18h 39mFrontier
Deal found 9/14$218
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Wed 10/11:35 pmSAN - PHL
2 stops31h 24mMultiple Airlines
Sun 10/57:00 amPHL - SAN
1 stop9h 36mMultiple Airlines
Deal found 9/14$223
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:35 amSAN - PHL
1 stop15h 22mFrontier
Thu 10/97:00 amPHL - SAN
1 stop11h 06mFrontier
Deal found 9/15$225
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/212:04 pmSAN - PHL
1 stop9h 53mFrontier
Thu 10/97:00 amPHL - SAN
1 stop11h 06mFrontier
Deal found 9/15$229
This Frontier deal was found by Cheapflights users on 9/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/171:06 pmSAN - PHL
1 stop13h 13mFrontier
Mon 10/208:15 amPHL - SAN
1 stop13h 33mFrontier
Deal found 9/14$236
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Wed 10/11:35 pmSAN - PHL
2 stops32h 22mMultiple Airlines
Mon 10/66:20 amPHL - SAN
1 stop10h 16mMultiple Airlines
Deal found 9/15$237
This Frontier deal was found by Cheapflights users on 9/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:00 pmSAN - PHL
1 stop7h 49mFrontier
Mon 11/171:02 pmPHL - SAN
2 stops13h 48mFrontier
Deal found 9/16$242
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/28:25 amSAN - PHL
2 stops13h 32mMultiple Airlines
Mon 10/66:20 amPHL - SAN
1 stop10h 16mMultiple Airlines
Deal found 9/15$243
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/36:15 amSAN - PHL
2 stops15h 42mMultiple Airlines
Mon 10/66:20 amPHL - SAN
1 stop10h 16mMultiple Airlines
Deal found 9/14$244
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/101:06 pmSAN - PHL
2 stops25h 54mFrontier
Sun 10/196:10 amPHL - SAN
1 stop12h 11mFrontier
Deal found 9/15$245

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego 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 September 16, 2025.
Use the filters below to find and compare flights from San Diego to Delaware that are best for you.

Fly from

San Diego

Fly to

Delaware

Route

Depart

Return

Price

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Mon 10/20

10:20 pm-8:41 am

1 stop7h 21m

Philadelphia

Fri 10/24

2:25 pm-9:20 pm

1 stop9h 55m

$257

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Sat 12/6

10:00 pm-8:44 am

1 stop7h 44m

Philadelphia

Sun 12/7

5:24 pm-10:23 pm

1 stop7h 59m

$277

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 11/19

6:15 am-5:42 am

1 stop20h 27m

Philadelphia

Wed 12/3

7:06 am-4:57 pm

1 stop12h 51m

$316

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Thu 11/20

6:25 am-11:59 pm

1 stop14h 34m

Philadelphia

Thu 11/27

3:25 pm-11:59 pm

1 stop11h 34m

$324

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Tue 11/18

7:20 am-7:29 pm

1 stop9h 09m

Philadelphia

Tue 11/25

6:00 am-11:06 am

1 stop8h 06m

$330

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Mon 12/22

7:10 pm-5:36 am

1 stop7h 26m

Philadelphia

Wed 12/31

6:00 am-10:38 am

1 stop7h 38m

$330

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 10/29

12:36 pm-5:42 am

2 stops14h 06m

Philadelphia

Tue 11/4

7:02 am-4:53 pm

1 stop12h 51m

$335

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Sat 10/18

6:15 am-5:38 pm

1 stop8h 23m

Philadelphia

Wed 10/22

6:00 am-10:34 am

1 stop7h 34m

$343

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Thu 10/23

10:20 pm-8:41 am

1 stop7h 21m

Philadelphia

Mon 10/27

6:50 pm-11:58 pm

1 stop8h 08m

$343

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Tue 12/23

7:10 pm-5:36 am

1 stop7h 26m

Philadelphia

Thu 1/1

7:00 am-11:57 am

1 stop7h 57m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 24 results
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Best time to book a flight from San Diego to Delaware

Have a flexible travel schedule? Discover the best time to fly to Delaware from San Diego 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 San Diego 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 San Diego 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 San Diego to Delaware?

    For a flight from San Diego to Delaware, you will be flying from San Diego. San Diego (SAN) is just 2.6 mi from the center of the city.

  • How long is the flight from San Diego to Delaware?

    A quick flight from San Diego to Delaware can take about 7h 21m. Delta provides one of the quickest options available for as low as $257. San Diego and Delaware are separated by a distance of 2364 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

  • How can I find direct flights from San Diego to Delaware?

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

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

    Yes. Cheapflights offers flight deals from San Diego 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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