HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Delaware

$65+ 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
Mar 16 — Mar 231
Mon 3/16
Mon 3/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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

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 February 14, 2026.

This Frontier deal was found by Cheapflights users on 2/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/166:25 am
SAN
-
PHL
1 stop8h 49m
Frontier
Mon 2/235:47 pm
PHL
-
SAN
1 stop9h 21m
Frontier
Deal found 2/9$346
This CheapOair deal was found by Cheapflights users on 2/11. 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.
Mon 4/68:30 pm
SAN
-
PHL
2 stops23h 41m
Multiple Airlines
Thu 4/91:13 pm
PHL
-
SAN
1 stop13h 41m
Multiple Airlines
Deal found 2/11$348
This Southwest deal was found by Cheapflights users on 2/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2810:30 am
SAN
-
PHL
2 stops9h 20m
Southwest
Mon 3/25:25 pm
PHL
-
SAN
1 stop7h 55m
Southwest
Deal found 2/10$349
This CheapOair deal was found by Cheapflights users on 2/12. 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.
Mon 3/236:25 am
SAN
-
PHL
1 stop20h 06m
Multiple Airlines
Wed 3/256:00 am
PHL
-
SAN
1 stop10h 08m
Multiple Airlines
Deal found 2/12$350
This American Airlines deal was found by Cheapflights users on 2/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:15 am
SAN
-
PHL
Nonstop5h 24m
American Airlines
Wed 5/133:55 pm
PHL
-
SAN
Nonstop5h 51m
American Airlines
Deal found 2/10$351
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Tue 2/177:11 am
SAN
-
PHL
2 stops24h 13m
Frontier
Mon 2/235:47 pm
PHL
-
SAN
1 stop9h 21m
Frontier
Deal found 2/9$352
This CheapOair deal was found by Cheapflights users on 2/13. 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.
Mon 3/28:44 pm
SAN
-
PHL
1 stop14h 23m
Multiple Airlines
Thu 3/55:47 pm
PHL
-
SAN
1 stop9h 21m
Multiple Airlines
Deal found 2/13$353
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 2/226:25 am
SAN
-
PHL
2 stops29h 10m
Frontier
Sun 3/15:47 pm
PHL
-
SAN
1 stop9h 21m
Frontier
Deal found 2/9$354
This Cheapflightsfares deal was found by Cheapflights users on 2/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:45 am
SAN
-
PHL
1 stop12h 27m
Frontier
Mon 2/167:12 pm
PHL
-
SAN
1 stop7h 56m
Frontier
Deal found 2/9$355
This Frontier deal was found by Cheapflights users on 2/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/139:45 am
SAN
-
PHL
1 stop12h 27m
Frontier
Thu 2/195:42 pm
PHL
-
SAN
1 stop9h 26m
Frontier
Deal found 2/9$356
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 2/2611:59 am
SAN
-
PHL
1 stop26h 56m
Frontier
Sat 2/2812:33 pm
PHL
-
SAN
2 stops22h 51m
Frontier
Deal found 2/9$357
This Southwest deal was found by Cheapflights users on 2/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:35 am
SAN
-
PHL
2 stops8h 45m
Southwest
Sat 2/215:40 pm
PHL
-
SAN
1 stop7h 35m
Southwest
Deal found 2/9$359

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 February 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$346
(Frontier)

One-way from

$65
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$455
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 ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 14, 2026.
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

Thu 4/23

10:30 pm-10:28 am

1 stop8h 58m

Philadelphia

Sat 4/25

6:17 am-11:25 am

1 stop8h 08m

$352

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 4/8

6:20 pm-10:28 am

2 stops13h 08m

Philadelphia

Wed 4/22

1:27 pm-10:38 pm

2 stops12h 11m

$357

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Fri 4/17

11:00 am-11:43 pm

1 stop9h 43m

Philadelphia

Wed 4/22

1:27 pm-10:38 pm

2 stops12h 11m

$362

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 4/8

9:45 pm-9:58 am

1 stop9h 13m

Philadelphia

Fri 4/17

1:27 pm-8:12 pm

2 stops9h 45m

$362

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Mon 2/23

6:35 am-6:00 pm

1 stop8h 25m

Philadelphia

Thu 2/26

5:40 am-4:15 pm

1 stop13h 35m

$365

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Tue 4/7

12:30 pm-11:55 pm

2 stops8h 25m

Philadelphia

Wed 4/15

4:00 pm-10:40 pm

2 stops9h 40m

$369

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Sat 3/14

10:10 pm-8:46 am

1 stop7h 36m

Philadelphia

Sat 3/21

6:00 pm-11:09 pm

1 stop8h 09m

$371

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Fri 3/27

6:55 am-8:39 am

2 stops22h 44m

Philadelphia

Mon 3/30

8:25 pm-9:14 pm

1 stop27h 49m

$372

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 4/15

6:20 am-6:05 pm

2 stops8h 45m

Philadelphia

Sat 4/18

5:35 am-12:05 pm

2 stops9h 30m

$375

San DiegoPhiladelphia

SAN - PHL

SANPHL

San Diego

Wed 5/6

6:20 am-5:50 pm

2 stops8h 30m

Philadelphia

Sat 5/9

5:00 pm-11:25 pm

2 stops9h 25m

$375

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Showing 1-10 of 27 results
1
2
3

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 8h 58m. United Airlines provides one of the quickest options available for as low as $352. 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Delaware

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to John F Kennedy Intl flights
San Francisco to Newark flights
San Francisco to LaGuardia flights
Los Angeles to John F Kennedy Intl flights
San Francisco to Las Vegas flights
Los Angeles to Seattle flights
San Francisco to Los Angeles flights
Los Angeles to San Francisco flights
Los Angeles to Honolulu flights
San Francisco to Santa Ana flights
Los Angeles to Las Vegas flights
San Jose to Los Angeles flights
San Francisco to Seattle flights
Los Angeles to Newark flights
Los Angeles to LaGuardia flights
Los Angeles to Miami flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to Orlando flights
San Francisco to Sky Harbor Intl flights
Burbank to Las Vegas flights
San Francisco to Dallas/Fort Worth flights
Ontario to Dallas/Fort Worth flights
Los Angeles to Hobby flights
San Francisco to Honolulu flights
San Francisco to San Diego flights
Los Angeles to Sky Harbor Intl flights
Santa Ana to San Francisco flights
Ontario to San Francisco flights
Los Angeles to O'Hare Intl flights
Ontario to Seattle flights
Santa Ana to Las Vegas flights
San Francisco to Ontario flights
San Francisco to O'Hare Intl flights
San Francisco to Burbank flights
Los Angeles to Atlanta flights
Los Angeles to San Jose flights
Los Angeles to Fort Lauderdale flights
Los Angeles to George Bush Intcntl flights
San Jose to Las Vegas flights
Los Angeles to Boston flights
San Jose to John F Kennedy Intl flights
San Francisco to Denver flights
San Jose to Newark flights
Burbank to San Francisco flights
Los Angeles to Reagan-National flights
Los Angeles to Kahului flights
Los Angeles to Salt Lake City flights
Los Angeles to Austin flights
Sacramento to Las Vegas flights
Oakland to Newark flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights