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Delaware

$70+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ILG
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
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 March 10, 2026.

This CheapOair deal was found by Cheapflights users on 3/10. 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.
Tue 5/59:15 pm
SAN
-
PHL
2 stops17h 23m
Multiple Airlines
Sat 5/98:25 pm
PHL
-
SAN
1 stop15h 09m
Multiple Airlines
Deal found 3/10$349
This Frontier deal was found by Cheapflights users on 3/10. 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 7/237:50 am
SAN
-
PHL
1 stop11h 57m
Frontier
Mon 7/272:21 pm
PHL
-
SAN
1 stop12h 05m
Frontier
Deal found 3/10$350
This CheapOair deal was found by Cheapflights users on 3/9. 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.
Wed 4/158:00 am
SAN
-
PHL
1 stop18h 34m
Multiple Airlines
Tue 5/58:25 am
PHL
-
SAN
2 stops28h 28m
Multiple Airlines
Deal found 3/9$353
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Thu 4/166:22 pm
SAN
-
PHL
1 stop10h 53m
United Airlines
Tue 4/2111:36 am
PHL
-
SAN
2 stops12h 03m
United Airlines
Deal found 3/6$354
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 5/287:50 am
SAN
-
PHL
1 stop11h 57m
Frontier
Sun 5/311:06 pm
PHL
-
SAN
2 stops13h 49m
Frontier
Deal found 3/9$355
This Frontier deal was found by Cheapflights users on 3/8. 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.
Mon 4/2012:25 pm
SAN
-
PHL
1 stop14h 09m
Frontier
Mon 4/273:27 pm
PHL
-
SAN
1 stop9h 17m
Frontier
Deal found 3/8$356
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Sun 4/126:25 am
SAN
-
PHL
1 stop20h 06m
Frontier
Fri 4/173:22 pm
PHL
-
SAN
1 stop11h 07m
Frontier
Deal found 3/9$357
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Sun 4/126:25 am
SAN
-
PHL
2 stops14h 58m
Frontier
Sun 4/198:36 pm
PHL
-
SAN
1 stop14h 58m
Frontier
Deal found 3/9$358
This United Airlines deal was found by Cheapflights users on 3/6. 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.
Thu 4/168:37 pm
SAN
-
PHL
2 stops10h 51m
United Airlines
Fri 4/173:40 pm
PHL
-
SAN
2 stops11h 19m
United Airlines
Deal found 3/6$359
This Frontier deal was found by Cheapflights users on 3/5. 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 3/66:55 am
SAN
-
PHL
1 stop13h 13m
Frontier
Sun 3/83:41 pm
PHL
-
SAN
1 stop11h 35m
Frontier
Deal found 3/5$360
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 3/309:58 pm
SAN
-
PHL
2 stops23h 54m
Frontier
Wed 4/18:25 pm
PHL
-
SAN
1 stop14h 27m
Frontier
Deal found 3/8$361
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 5/2711:16 am
SAN
-
PHL
2 stops24h 46m
Frontier
Sat 5/302:21 pm
PHL
-
SAN
1 stop12h 05m
Frontier
Deal found 3/5$362

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(CheapOair)

One-way from

$70
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$464
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. 5% potential increase in price ($27 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 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 March 10, 2026.
Use the filters below to find and compare flights from San Diego to Delaware that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Mon 6/15

6:55 pm-9:45 am

2 stops11h 50m

Philadelphia

Wed 7/1

6:00 am-11:21 am

1 stop8h 21m

$354

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Thu 4/16

8:37 pm-10:28 am

2 stops10h 51m

Philadelphia

Tue 4/21

11:36 am-9:30 pm

2 stops12h 54m

$359

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 5/27

10:40 pm-2:10 pm

2 stops12h 30m

Philadelphia

Sat 5/30

12:46 pm-11:54 pm

2 stops14h 08m

$370

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 4/29

6:20 pm-9:59 am

2 stops12h 39m

Philadelphia

Sat 5/2

6:10 am-5:24 pm

2 stops14h 14m

$370

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 4/22

12:33 pm-6:02 am

2 stops14h 29m

Philadelphia

Wed 5/13

7:16 pm-9:15 am

1 stop16h 59m

$379

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Sat 4/18

8:20 am-9:35 pm

2 stops10h 15m

Philadelphia

Sat 4/25

5:00 pm-11:25 pm

2 stops9h 25m

$389

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 4/29

6:20 am-5:50 pm

2 stops8h 30m

Philadelphia

Tue 5/5

4:00 pm-10:40 pm

2 stops9h 40m

$389

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Sat 8/1

10:30 pm-8:36 am

1 stop7h 06m

Philadelphia

Sat 8/8

5:30 am-11:35 am

1 stop9h 05m

$391

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 6/24

3:20 pm-6:05 am

1 stop11h 45m

Philadelphia

Sat 7/11

7:05 am-2:39 pm

1 stop10h 34m

$391

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 7/8

12:10 pm-1:00 am

2 stops9h 50m

Philadelphia

Tue 7/14

12:55 pm-7:00 pm

2 stops9h 05m

$401

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Showing 1-10 of 27 resultsSorted by cheapest first
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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 11h 16m. United Airlines provides one of the quickest options available for as low as $661. 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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