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Delaware

$162+ 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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ILG
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Orbitz deal was found by Cheapflights users on 12/17. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:25 amSAN - PHL
1 stop20h 06mFrontier
Fri 1/912:51 pmPHL - SAN
1 stop9h 46mFrontier
Deal found 12/17$347
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:45 pmSAN - PHL
Nonstop5h 10mAmerican Airlines
Wed 1/218:20 amPHL - SAN
Nonstop6h 12mAmerican Airlines
Deal found 12/17$356
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1710:50 pmSAN - PHL
Nonstop5h 01mAmerican Airlines
Wed 1/147:50 pmPHL - SAN
Nonstop6h 08mAmerican Airlines
Deal found 12/17$361
This Frontier deal was found by Cheapflights users on 12/16. 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.
Tue 12/231:06 pmSAN - PHL
1 stop13h 34mFrontier
Thu 1/17:10 amPHL - SAN
1 stop8h 01mFrontier
Deal found 12/16$362
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:40 pmSAN - PHL
1 stop7h 37mDelta
Wed 1/77:00 amPHL - SAN
2 stops12h 40mDelta
Deal found 12/17$368
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/206:55 pmSAN - PHL
1 stop7h 37mUnited Airlines
Wed 1/216:30 amPHL - SAN
1 stop8h 18mUnited Airlines
Deal found 12/17$371
This Frontier deal was found by Cheapflights users on 12/16. 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 12/181:06 pmSAN - PHL
1 stop13h 34mFrontier
Thu 12/257:10 amPHL - SAN
1 stop8h 01mFrontier
Deal found 12/16$383
This Gotogate deal was found by Cheapflights users on 12/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/181:06 pmSAN - PHL
1 stop13h 34mFrontier
Mon 1/55:01 pmPHL - SAN
1 stop9h 06mFrontier
Deal found 12/16$389
This American Airlines deal was found by Cheapflights users on 12/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:20 amSAN - PHL
Nonstop5h 18mAmerican Airlines
Wed 1/77:50 pmPHL - SAN
Nonstop6h 08mAmerican Airlines
Deal found 12/18$391

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$346
(Southwest)

One-way from

$162
(Frontier)

Popular in

December

Cheapest in

October

Average price

$530
Provider with most accurate pricing for San Diego-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Philadelphia flights.
Search Deals
From San Diego to Delaware
Search Deals
One-way flight from San Diego to Delaware
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

Wed 1/7

9:00 am-9:36 pm

2 stops9h 36m

Philadelphia

Wed 1/14

6:30 am-11:48 am

1 stop8h 18m

$352

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Thu 1/22

6:55 pm-8:50 am

2 stops10h 55m

Philadelphia

Sun 1/25

6:00 am-2:29 pm

2 stops11h 29m

$356

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Fri 1/30

6:55 pm-8:50 am

2 stops10h 55m

Philadelphia

Sat 2/7

7:00 am-4:30 pm

2 stops12h 30m

$356

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 1/7

7:00 am-11:56 pm

2 stops13h 56m

Philadelphia

Wed 1/14

11:27 am-8:43 pm

2 stops12h 16m

$356

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 1/7

10:52 am-9:36 pm

1 stop7h 44m

Philadelphia

Sat 1/10

6:30 am-11:48 am

1 stop8h 18m

$357

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Thu 1/15

8:05 am-5:42 pm

1 stop6h 37m

Philadelphia

Tue 1/20

6:00 am-10:33 am

1 stop7h 33m

$357

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Mon 1/26

9:30 pm-6:23 pm

1 stop17h 53m

Philadelphia

Thu 1/29

1:30 pm-8:20 pm

1 stop9h 50m

$366

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Tue 1/6

9:40 am-10:00 pm

2 stops9h 20m

Philadelphia

Sat 1/10

8:05 am-12:35 pm

1 stop7h 30m

$367

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Thu 1/29

6:55 pm-8:50 am

2 stops10h 55m

Philadelphia

Tue 2/3

6:00 am-10:33 am

1 stop7h 33m

$368

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 2/18

10:05 pm-8:50 am

1 stop7h 45m

Philadelphia

Wed 2/25

9:41 am-5:50 pm

2 stops11h 09m

$368

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 23 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 9h 03m. United Airlines provides one of the quickest options available for as low as $664. San Diego and Delaware are separated by a distance of 2354 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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