$80+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ILG
Apr 22 — Apr 291
Round-trip
1 adult, Economy
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Find cheap flights from San Diego to Delaware with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Diego to Delaware
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Cheapest flights from San Diego to DelawareExplore 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 23, 2026.
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 23, 2026.
This Frontier deal was found by Cheapflights users on 3/20. 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 5/296:25 am
SAN
- PHL
1 stop12h 49m
Frontier
Wed 6/310:40 am
PHL
- SAN
1 stop13h 32m
Frontier
Deal found 3/20![Frontier logo]()
$350
This Frontier deal was found by Cheapflights users on 3/21. 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.
Sun 5/176:25 am
SAN
- PHL
1 stop12h 49m
Frontier
Sat 5/236:10 am
PHL
- SAN
1 stop15h 15m
Frontier
Deal found 3/21![Frontier logo]()
$351
This Cheapflightsfares deal was found by Cheapflights users on 3/20. 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.
Tue 6/96:54 pm
SAN
- PHL
1 stop9h 06m
Frontier
Tue 6/238:36 pm
PHL
- SAN
1 stop30h 17m
Frontier
Deal found 3/20![Frontier logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 4/1212:33 pm
SAN
- PHL
2 stops28h 20m
Frontier
Thu 4/168:41 pm
PHL
- SAN
1 stop14h 53m
Frontier
Deal found 3/21![Frontier logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 4/267:20 am
SAN
- PHL
2 stops24h 34m
Multiple Airlines
Wed 4/298:31 pm
PHL
- SAN
1 stop15h 03m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 5/196:25 am
SAN
- PHL
1 stop20h 12m
Frontier
Mon 5/258:30 am
PHL
- SAN
2 stops13h 03m
Frontier
Deal found 3/21![Frontier logo]()
$358
This CheapOair deal was found by Cheapflights users on 3/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:30 am
SAN
- PHL
1 stop16h 04m
Multiple Airlines
Tue 5/58:25 am
PHL
- SAN
2 stops14h 39m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Sat 5/169:37 am
SAN
- PHL
1 stop17h 00m
Frontier
Tue 5/268:35 pm
PHL
- SAN
1 stop15h 07m
Frontier
Deal found 3/21![Frontier logo]()
$361
This CheapOair deal was found by Cheapflights users on 3/19. 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.
Sat 4/119:28 pm
SAN
- PHL
1 stop29h 03m
Frontier
Thu 4/168:41 pm
PHL
- SAN
1 stop30h 18m
Frontier
Deal found 3/19![Frontier logo]()
$362
This CheapOair deal was found by Cheapflights users on 3/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2910:30 am
SAN
- PHL
1 stop16h 04m
Multiple Airlines
Sat 5/26:00 am
PHL
- SAN
2 stops17h 04m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$364
This CheapOair deal was found by Cheapflights users on 3/20. 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.
Thu 6/116:25 am
SAN
- PHL
1 stop20h 13m
Frontier
Wed 6/1711:35 am
PHL
- SAN
1 stop10h 11m
Frontier
Deal found 3/20![Frontier logo]()
$366
This CheapOair deal was found by Cheapflights users on 3/22. 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
Fri 5/88:24 am
PHL
- SAN
2 stops14h 36m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$368
Best flights from San Diego to DelawareDiscover carefully curated flight deals from San Diego to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
Discover carefully curated flight deals from San Diego to Delaware that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 23, 2026.
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1212:30 pm
SAN
- PHL
2 stops8h 25m
Southwest
Tue 5/195:50 am
PHL
- SAN
2 stops9h 20m
Southwest
Deal found 3/19![Southwest logo]()
$411
This Alaska Airlines deal was found by Cheapflights users on 3/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/159:39 am
SAN
- PHL
2 stops17h 26m
Alaska Airlines
Tue 5/57:22 am
PHL
- SAN
2 stops11h 54m
Alaska Airlines
Deal found 3/21![Alaska Airlines logo]()
$438
This Delta deal was found by Cheapflights users on 3/19. 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 5/2710:15 pm
SAN
- PHL
1 stop7h 40m
Delta
Sun 6/75:30 am
PHL
- SAN
1 stop9h 05m
Delta
Deal found 3/19![Delta logo]()
$453
This American Airlines deal was found by Cheapflights users on 3/22. 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.
Thu 6/46:15 am
SAN
- PHL
Nonstop5h 25m
American Airlines
Sun 6/76:00 pm
PHL
- SAN
Nonstop5h 53m
American Airlines
Deal found 3/22![American Airlines logo]()
$501
This Southwest deal was found by Cheapflights users on 3/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/412:55 pm
SAN
- PHL
2 stops8h 45m
Southwest
Sun 6/75:00 am
PHL
- SAN
1 stop7h 25m
Southwest
Deal found 3/22![Southwest logo]()
$429
This Southwest deal was found by Cheapflights users on 3/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:30 am
SAN
- PHL
2 stops8h 20m
Southwest
Fri 4/174:30 pm
PHL
- SAN
2 stops9h 35m
Southwest
Deal found 3/18![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/118:20 am
SAN
- PHL
2 stops10h 15m
Southwest
Tue 4/145:50 am
PHL
- SAN
2 stops9h 20m
Southwest
Deal found 3/19![Southwest logo]()
$446
This Southwest deal was found by Cheapflights users on 3/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:30 am
SAN
- PHL
2 stops8h 55m
Southwest
Mon 5/112:15 pm
PHL
- SAN
2 stops8h 40m
Southwest
Deal found 3/18![Southwest logo]()
$459
This Southwest deal was found by Cheapflights users on 3/18. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/236:30 am
SAN
- PHL
2 stops8h 55m
Southwest
Sun 4/265:20 am
PHL
- SAN
2 stops9h 25m
Southwest
Deal found 3/18![Southwest logo]()
$459
This American Airlines deal was found by Cheapflights users on 3/17. 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.
Fri 5/112:03 pm
SAN
- SBY
1 stop7h 05m
American Airlines
Sun 5/176:38 am
SBY
- SAN
1 stop7h 39m
American Airlines
Deal found 3/17![American Airlines logo]()
$765
This Southwest deal was found by Cheapflights users on 3/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1812:55 pm
SAN
- PHL
2 stops8h 25m
Southwest
Sun 6/215:00 am
PHL
- SAN
2 stops8h 40m
Southwest
Deal found 3/19![Southwest logo]()
$504
This American Airlines deal was found by Cheapflights users on 3/21. 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.
Mon 3/3012:09 pm
SAN
- SBY
1 stop7h 12m
American Airlines
Wed 4/86:38 am
SBY
- SAN
1 stop7h 39m
American Airlines
Deal found 3/21![American Airlines logo]()
$787
Last-minute flights from San Diego to DelawareDiscover last-minute flight deals from San Diego to Delaware. Data last updated March 23, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to Delaware. Data last updated March 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 3/21. 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.
Mon 3/3012:09 pm
SAN
- SBY
1 stop7h 12m
American Airlines
Wed 4/86:38 am
SBY
- SAN
1 stop7h 39m
American Airlines
Deal found 3/21![American Airlines logo]()
$787
This Cheapflightsfares deal was found by Cheapflights users on 3/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/39:28 pm
SAN
- PHL
1 stop29h 06m
Frontier
Sun 4/58:25 pm
PHL
- SAN
1 stop27h 01m
Frontier
Deal found 3/18![Frontier logo]()
$354
This Cheapflightsfares deal was found by Cheapflights users on 3/21. 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.
Mon 4/69:28 pm
SAN
- PHL
1 stop29h 03m
Frontier
Thu 4/98:25 pm
PHL
- SAN
1 stop27h 01m
Frontier
Deal found 3/21![Frontier logo]()
$350
This CheapOair deal was found by Cheapflights users on 3/22. 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 4/78:25 pm
SAN
- PHL
1 stop23h 13m
Multiple Airlines
Sat 4/118:25 pm
PHL
- SAN
1 stop30h 37m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/82:49 pm
SAN
- PHL
2 stops11h 42m
Frontier
Fri 4/108:25 pm
PHL
- SAN
1 stop30h 37m
Frontier
Deal found 3/20![Frontier logo]()
$369
This CheapOair deal was found by Cheapflights users on 3/19. 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 4/108:25 pm
SAN
- PHL
1 stop23h 13m
Multiple Airlines
Mon 4/138:25 pm
PHL
- SAN
1 stop26h 39m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$373
This CheapOair deal was found by Cheapflights users on 3/19. 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.
Sat 4/119:28 pm
SAN
- PHL
1 stop29h 03m
Frontier
Thu 4/168:41 pm
PHL
- SAN
1 stop30h 18m
Frontier
Deal found 3/19![Frontier logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 4/1212:33 pm
SAN
- PHL
2 stops28h 20m
Frontier
Thu 4/168:41 pm
PHL
- SAN
1 stop14h 53m
Frontier
Deal found 3/21![Frontier logo]()
$355
This CheapOair deal was found by Cheapflights users on 3/19. 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
Wed 5/68:25 am
PHL
- SAN
2 stops14h 39m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$359
This CheapOair deal was found by Cheapflights users on 3/22. 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
Fri 5/88:24 am
PHL
- SAN
2 stops14h 36m
Multiple Airlines
Deal found 3/22![Multiple Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 4/267:20 am
SAN
- PHL
2 stops24h 34m
Multiple Airlines
Wed 4/298:31 pm
PHL
- SAN
1 stop15h 03m
Multiple Airlines
Deal found 3/19![Multiple Airlines logo]()
$356
This CheapOair deal was found by Cheapflights users on 3/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2910:30 am
SAN
- PHL
1 stop16h 04m
Multiple Airlines
Sat 5/26:00 am
PHL
- SAN
2 stops17h 04m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$364
One-way flights from San Diego to DelawareSearch for one-way flight options from San Diego to Delaware. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
Search for one-way flight options from San Diego to Delaware. Find affordable one-way fares based on user searches. Data last updated March 23, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 3/20. 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.
Mon 4/136:45 am
SAN
- PHL
1 stop10h 08m
Frontier
Deal found 3/20![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 3/19. 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 4/212:12 pm
SAN
- PHL
1 stop13h 38m
Frontier
Deal found 3/19![Frontier logo]()
$86
This Trip.com deal was found by Cheapflights users on 3/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1811:42 am
SAN
- PHL
1 stop14h 53m
Frontier
Deal found 3/19![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:15 am
SAN
- PHL
1 stop19h 19m
Frontier
Deal found 3/18![Frontier logo]()
$90
This Trip.com deal was found by Cheapflights users on 3/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1712:25 pm
SAN
- PHL
1 stop14h 09m
Frontier
Deal found 3/18![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:25 am
SAN
- PHL
1 stop20h 12m
Frontier
Deal found 3/18![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 4/298:00 am
SAN
- PHL
1 stop18h 34m
Frontier
Deal found 3/21![Frontier logo]()
$104
This Trip.com deal was found by Cheapflights users on 3/18. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:30 am
SAN
- PHL
1 stop16h 04m
Frontier
Deal found 3/18![Frontier logo]()
$107
This Cheapflightsfares deal was found by Cheapflights users on 3/20. 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 4/247:00 am
SAN
- PHL
1 stop13h 54m
Frontier
Deal found 3/20![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 3/19. 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 4/2210:30 am
SAN
- PHL
2 stops21h 23m
Frontier
Deal found 3/19![Frontier logo]()
$113
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 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $350 (Frontier) |
One-way from | $80 (Cheapflightsfares) |
Popular in | December |
Cheapest in | October |
Average price | $474 |
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 23, 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
Cheapest round-trip
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Tue 5/12
12:30 pm-11:55 pm
2 stops8h 25m
Philadelphia
Tue 5/19
5:50 am-12:10 pm
2 stops9h 20m
$411
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Thu 6/4
12:55 pm-12:40 am
2 stops8h 45m
Philadelphia
Sun 6/7
5:00 am-9:25 am
1 stop7h 25m
$429
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Wed 4/15
9:39 am-6:05 am
2 stops17h 26m
Philadelphia
Tue 5/5
7:22 am-4:16 pm
2 stops11h 54m
$438
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Wed 4/15
6:30 am-5:50 pm
2 stops8h 20m
Philadelphia
Fri 4/17
4:30 pm-11:05 pm
2 stops9h 35m
$444
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Sat 4/11
8:20 am-9:35 pm
2 stops10h 15m
Philadelphia
Tue 4/14
5:50 am-12:10 pm
2 stops9h 20m
$446
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Wed 5/27
10:15 pm-8:55 am
1 stop7h 40m
Philadelphia
Sun 6/7
5:30 am-11:35 am
1 stop9h 05m
$453
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Fri 5/8
6:30 am-6:25 pm
2 stops8h 55m
Philadelphia
Mon 5/11
2:15 pm-7:55 pm
2 stops8h 40m
$459
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Thu 4/23
6:30 am-6:25 pm
2 stops8h 55m
Philadelphia
Sun 4/26
5:20 am-11:45 am
2 stops9h 25m
$459
Quickest round-trip
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Thu 6/4
6:15 am-2:40 pm
Nonstop5h 25m
Philadelphia
Sun 6/7
6:00 pm-8:53 pm
Nonstop5h 53m
$501
San DiegoPhiladelphia
SAN - PHL
SANPHL
San Diego
Thu 6/18
12:55 pm-12:20 am
2 stops8h 25m
Philadelphia
Sun 6/21
5:00 am-10:40 am
2 stops8h 40m
$504
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Best time to book a flight from San Diego to Delaware
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SAN-PHL
SAN-SBY
Estimated round-trip price
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Everything you need to know about your flight from San Diego to Delaware
SAN-USDE
SAN-PHL
SAN-SBY
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