$123+ Cheap flights from Philadelphia to San Diego (PHL - SAN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAN
Oct 11 — Oct 181
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to San Diego 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.Cheapflights Tip: The best prices from Philadelphia to San Diego are usually found in January or February, booked 69 days in advance, depart on a Tuesday or Wednesday and return on a Thursday
Cheap flight deals from Philadelphia to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Philadelphia to San DiegoExplore the most affordable flight options available from Philadelphia to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
Explore the most affordable flight options available from Philadelphia to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 10/105:50 am -
1 stop21h 06m
Sat 10/173:14 pm -
2 stops13h 04m
Deal found 9/7![Frontier logo]()
$338
This Expedia deal was found by Cheapflights users on 9/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:00 am -
1 stop10h 42m
Tue 10/66:25 am -
2 stops13h 53m
Deal found 9/6![Multiple Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Wed 9/910:30 am -
2 stops9h 40m
Wed 9/1612:04 pm -
1 stop7h 27m
Deal found 9/6![United Airlines logo]()
$342
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Fri 10/166:00 am -
1 stop9h 18m
Fri 10/2312:04 pm -
1 stop7h 27m
Deal found 9/6![United Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:44 pm -
1 stop23h 05m
Fri 10/166:25 am -
2 stops21h 56m
Deal found 9/6![Frontier logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Wed 10/218:30 am -
2 stops18h 26m
Sun 10/2512:37 pm -
1 stop7h 50m
Deal found 9/8![Multiple Airlines logo]()
$346
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:20 am -
1 stop7h 29m
Sun 10/49:45 pm -
1 stop8h 58m
Deal found 9/8![United Airlines logo]()
$347
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:02 am -
1 stop10h 36m
Wed 10/144:53 pm -
1 stop29h 23m
Deal found 9/9![Multiple Airlines logo]()
$348
This Cheapflightsfares deal was found by Cheapflights users on 9/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:44 pm -
1 stop26h 05m
Thu 10/224:53 pm -
1 stop29h 23m
Deal found 9/6![Frontier logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:30 am -
1 stop29h 22m
Sun 11/812:37 pm -
1 stop24h 47m
Deal found 9/10![Multiple Airlines logo]()
$351
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/294:48 pm -
2 stops19h 18m
Sat 10/106:25 am -
1 stop15h 51m
Deal found 9/9![Multiple Airlines logo]()
$353
Best flights from Philadelphia to San DiegoDiscover carefully curated flight deals from Philadelphia to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Philadelphia to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1610:53 am -
2 stops9h 17m
Tue 12/227:10 pm -
1 stop7h 21m
Deal found 9/8![United Airlines logo]()
$342
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 11/177:02 am -
1 stop10h 45m
Wed 1/612:39 pm -
1 stop25h 32m
Deal found 9/7![Alaska Airlines logo]()
$391
This Southwest deal was found by Cheapflights users on 9/10. 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.
Wed 12/211:45 am -
1 stop9h 30m
Mon 12/71:50 pm -
1 stop6h 35m
Deal found 9/10![Southwest logo]()
$393
This Southwest deal was found by Cheapflights users on 9/9. 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.
Thu 11/56:35 pm -
1 stop7h 20m
Wed 11/1110:55 am -
2 stops9h 30m
Deal found 9/9![Southwest logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:00 am -
2 stops15h 22m
Wed 12/99:00 am -
1 stop17h 27m
Deal found 9/9![Alaska Airlines logo]()
$418
This Southwest deal was found by Cheapflights users on 9/10. 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.
Wed 10/1411:25 am -
2 stops10h 25m
Tue 10/209:15 am -
2 stops9h 20m
Deal found 9/10![Southwest logo]()
$403
This United Airlines deal was found by Cheapflights users on 9/6. 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 11/199:45 am -
1 stop8h 27m
Sun 11/229:45 pm -
1 stop9h 03m
Deal found 9/6![United Airlines logo]()
$447
This Alaska Airlines deal was found by Cheapflights users on 9/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:02 am -
1 stop19h 57m
Sun 10/186:15 am -
1 stop20h 26m
Deal found 9/6![Alaska Airlines logo]()
$446
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Wed 2/108:15 am -
1 stop10h 54m
Tue 2/166:28 pm -
1 stop10h 17m
Deal found 9/6![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 9/9. 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.
Thu 11/56:35 pm -
1 stop7h 20m
Sun 11/810:40 pm -
1 stop9h 20m
Deal found 9/9![Southwest logo]()
$445
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:30 pm -
1 stop9h 01m
Mon 10/57:30 am -
1 stop10h 45m
Deal found 9/8![United Airlines logo]()
$447
This United Airlines deal was found by Cheapflights users on 9/6. 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 1/78:15 am -
1 stop8h 32m
Mon 1/117:41 pm -
2 stops13h 33m
Deal found 9/6![United Airlines logo]()
$452
Last-minute flights from Philadelphia to San DiegoDiscover last-minute flight deals from Philadelphia to San Diego. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to San Diego. Data last updated September 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/7. 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 9/266:16 am -
1 stop7h 42m
Sat 10/37:00 am -
2 stops9h 24m
Deal found 9/7![United Airlines logo]()
$342
This Expedia deal was found by Cheapflights users on 9/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:00 am -
1 stop10h 42m
Tue 10/66:25 am -
2 stops13h 53m
Deal found 9/6![Multiple Airlines logo]()
$341
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/294:48 pm -
2 stops19h 18m
Sat 10/106:25 am -
1 stop15h 51m
Deal found 9/9![Multiple Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 9/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3011:20 am -
1 stop7h 29m
Sun 10/49:45 pm -
1 stop8h 58m
Deal found 9/8![United Airlines logo]()
$347
This Expedia deal was found by Cheapflights users on 9/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:02 am -
1 stop10h 36m
Wed 10/144:53 pm -
1 stop29h 23m
Deal found 9/9![Multiple Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 9/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:44 pm -
1 stop23h 05m
Fri 10/166:25 am -
2 stops21h 56m
Deal found 9/6![Frontier logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 10/105:50 am -
1 stop21h 06m
Sat 10/173:14 pm -
2 stops13h 04m
Deal found 9/7![Frontier logo]()
$338
This Cheapflightsfares deal was found by Cheapflights users on 9/7. 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 10/158:44 pm -
1 stop26h 05m
Tue 10/204:53 pm -
1 stop27h 57m
Deal found 9/7![Frontier logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Fri 10/166:00 am -
1 stop9h 18m
Fri 10/2312:04 pm -
1 stop7h 27m
Deal found 9/6![United Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Wed 10/218:30 am -
2 stops18h 26m
Sun 10/2512:37 pm -
1 stop7h 50m
Deal found 9/8![Multiple Airlines logo]()
$346
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:41 pm -
1 stop18h 25m
Wed 11/46:25 am -
2 stops13h 51m
Deal found 9/8![Multiple Airlines logo]()
$351
One-way flights from Philadelphia to San DiegoSearch for one-way flight options from Philadelphia to San Diego. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from Philadelphia to San Diego. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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.
Wed 10/145:50 am -
1 stop21h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$123
This Frontier deal was found by Cheapflights users on 9/9. 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.
Sat 10/245:50 am -
1 stop13h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:22 pm -
2 stops33h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:22 pm -
2 stops25h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$137
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Fri 10/168:44 pm -
1 stop23h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/65:32 pm -
2 stops26h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sat 11/77:42 am -
2 stops19h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$143
This Alaska Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 10/67:02 am -
1 stop10h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Alaska Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:25 pm -
1 stop19h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$160
Find flight deals from Philadelphia to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $338 (Kiwi.com) |
One-way from | $123 (Cheapflightsfares) |
Popular in | June |
Cheapest in | January |
Average price | $486 |
Good round-trip deal | $491 or less |
Good one-way deal | $380 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia to San Diego 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 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from Philadelphia to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Thu 12/10
7:30 am-12:35 pm
1 stop8h 05m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$197
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Sat 10/10
11:40 am-5:10 pm
2 stops8h 30m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$202
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Fri 10/30
5:10 pm-11:15 pm
1 stop9h 05m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$206
Quickest round-trip
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Wed 9/16
6:25 am-11:25 am
1 stop8h 00m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$219
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Thu 12/3
9:55 am-5:10 pm
1 stop10h 15m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$219
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Fri 12/4
9:55 am-5:10 pm
1 stop10h 15m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$219
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Sat 1/16
6:13 pm-12:29 am
1 stop9h 16m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$224
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Thu 3/4
6:10 am-2:54 pm
1 stop11h 44m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$224
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Thu 9/17
11:04 am-8:02 pm
2 stops11h 58m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Fri 1/15
1:16 pm-12:29 am
2 stops14h 13m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Philadelphia to San Diego
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to San Diego in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Philadelphia-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Philadelphia-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Philadelphia to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Philadelphia with our price prediction graph.
PHL-SAN
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 Philadelphia to San Diego
Prices
Airlines
More
How far ahead should I book a flight from Philadelphia to San Diego?
To ensure you get the cheapest price possible for a flight from Philadelphia to San Diego, you should look to book at least 52 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Philadelphia to San Diego?
Currently, January is the cheapest month in which you can book a flight from Philadelphia to San Diego (average of $418). Flying from Philadelphia to San Diego in June is currently the most expensive (average of $524). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PHL to SAN?
Find hourly flight availability from Philadelphia to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2026.
When flying from Philadelphia to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
What’s the top layover airport for flights from Philadelphia to San Diego?
Share of 1-stop round-trip flights from Philadelphia to San Diego chosen by Cheapflights users in the past 12 months, using the same layover each way.
Nashville (BNA) – chosen by Cheapflights users on 50% of 1-stop itineraries from Philadelphia to San Diego on Cheapflights.
What’s the cheapest layover airport for flights from Philadelphia to San Diego?
Average round-trip fare for 1-stop flights from Philadelphia to San Diego, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of $268.
What’s the fastest layover option from Philadelphia to San Diego?
Shortest average travel time for 1-stop one-way flights from Philadelphia to San Diego, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Nashville (BNA) have the shortest average one-way travel time for 1-stop routes: 7h 25m.
Which airport typically offers the quickest layover for flights from Philadelphia to San Diego?
Average layover duration for 1-stop one-way flights from Philadelphia to San Diego, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Boston (BOS) offer the fastest connection on this route, with an average layover time of 0h 54m.
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated September 11, 2026.
Read through reviews of airlines operating flights from Philadelphia to San Diego, such as Southwest,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Overall
8.0
Boarding
8.1
Food
7.0
Entertainment
7.5
Crew
8.6
Comfort
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
National City
Chula Vista
Coronado
Poway
San Ysidro
La Mesa
Santee
Julian
Lemon Grove
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Top 6 airlines flying from Philadelphia to San Diego
Discover the top 6 airlines that operate flights from Philadelphia to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$294 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$243 | Average$386 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$266 | Average$452 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$277 | Average$375 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$338 | Average$499 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$350 | Average$491 | FlexibilityNo cancel fee | On-time63% |