$206+ Cheap flights from Philadelphia to San Diego (PHL - SAN)
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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAN
Aug 27 — Sep 31
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 September or January, booked 69 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday
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 July 28, 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 July 28, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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.
Sun 8/168:37 pm
PHL
- SAN
1 stop30h 14m
Frontier
Fri 8/213:45 pm
SAN
- PHL
1 stop10h 54m
Frontier
Deal found 7/28![Frontier logo]()
$354
This Southwest deal was found by Cheapflights users on 7/28. 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 9/172:05 pm
PHL
- SAN
1 stop11h 55m
Southwest
Mon 9/211:50 pm
SAN
- PHL
1 stop7h 00m
Southwest
Deal found 7/28![Southwest logo]()
$356
This Frontier deal was found by Cheapflights users on 7/28. 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 8/1711:06 am
PHL
- SAN
1 stop12h 00m
Frontier
Wed 8/193:45 pm
SAN
- PHL
1 stop10h 54m
Frontier
Deal found 7/28![Frontier logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/2212:40 pm
PHL
- SAN
2 stops14h 11m
Frontier
Fri 9/256:45 pm
SAN
- PHL
1 stop16h 36m
Frontier
Deal found 7/28![Frontier logo]()
$359
This Southwest deal was found by Cheapflights users on 7/28. 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 8/226:30 am
PHL
- SAN
2 stops9h 10m
Southwest
Thu 12/108:25 am
SAN
- PHL
2 stops9h 55m
Southwest
Deal found 7/28![Southwest logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/1411:06 am
PHL
- SAN
1 stop12h 00m
Frontier
Wed 8/196:25 am
SAN
- PHL
2 stops21h 50m
Frontier
Deal found 7/28![Frontier logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/168:37 pm
PHL
- SAN
1 stop15h 33m
Frontier
Tue 8/256:25 am
SAN
- PHL
2 stops20h 14m
Frontier
Deal found 7/27![Frontier logo]()
$363
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 8/138:37 pm
PHL
- SAN
1 stop15h 33m
Frontier
Sun 8/168:51 pm
SAN
- PHL
1 stop30h 09m
Frontier
Deal found 7/27![Frontier logo]()
$364
This Frontier deal was found by Cheapflights users on 7/28. 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 8/1311:06 am
PHL
- SAN
1 stop12h 00m
Frontier
Fri 8/213:45 pm
SAN
- PHL
1 stop10h 54m
Frontier
Deal found 7/28![Frontier logo]()
$365
This CheapOair deal was found by Cheapflights users on 7/28. 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 8/138:37 pm
PHL
- SAN
1 stop15h 33m
Multiple Airlines
Wed 8/198:40 pm
SAN
- PHL
1 stop8h 42m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$367
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 8/78:37 pm
PHL
- SAN
1 stop15h 33m
Frontier
Sun 8/166:25 am
SAN
- PHL
1 stop26h 24m
Frontier
Deal found 7/27![Frontier logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/198:15 am
PHL
- SAN
1 stop10h 26m
Multiple Airlines
Tue 12/84:50 pm
SAN
- PHL
1 stop9h 37m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$369
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 July 28, 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 July 28, 2026.
This Southwest deal was found by Cheapflights users on 7/26. 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 10/711:25 am
PHL
- SAN
2 stops10h 30m
Southwest
Wed 10/149:15 am
SAN
- PHL
2 stops9h 15m
Southwest
Deal found 7/26![Southwest logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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 9/177:00 am
PHL
- SAN
2 stops14h 43m
Alaska Airlines
Sat 9/261:57 pm
SAN
- PHL
2 stops12h 43m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$432
This Southwest deal was found by Cheapflights users on 7/27. 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 10/25:10 pm
PHL
- SAN
2 stops9h 55m
Southwest
Sat 10/36:30 am
SAN
- PHL
1 stop9h 45m
Southwest
Deal found 7/27![Southwest logo]()
$386
This Southwest deal was found by Cheapflights users on 7/27. 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.
Mon 8/242:10 pm
PHL
- SAN
2 stops10h 45m
Southwest
Sat 8/2911:10 am
SAN
- PHL
2 stops8h 40m
Southwest
Deal found 7/27![Southwest logo]()
$391
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Sat 9/197:00 am
PHL
- SAN
2 stops14h 37m
Alaska Airlines
Wed 9/231:57 pm
SAN
- PHL
2 stops12h 43m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$439
This Southwest deal was found by Cheapflights users on 7/27. 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.
Sun 9/205:00 am
PHL
- SAN
1 stop7h 40m
Southwest
Sat 9/2610:40 pm
SAN
- PHL
1 stop9h 30m
Southwest
Deal found 7/27![Southwest logo]()
$410
This Southwest deal was found by Cheapflights users on 7/23. 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 8/112:45 pm
PHL
- SAN
2 stops9h 20m
Southwest
Tue 8/1810:40 pm
SAN
- PHL
1 stop9h 55m
Southwest
Deal found 7/23![Southwest logo]()
$427
This Southwest deal was found by Cheapflights users on 7/26. 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 8/122:45 pm
PHL
- SAN
2 stops9h 20m
Southwest
Wed 9/306:45 am
SAN
- PHL
2 stops8h 15m
Southwest
Deal found 7/26![Southwest logo]()
$432
This Southwest deal was found by Cheapflights users on 7/26. 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 9/93:05 pm
PHL
- SAN
2 stops8h 50m
Southwest
Sun 9/1310:45 am
SAN
- PHL
2 stops10h 30m
Southwest
Deal found 7/26![Southwest logo]()
$437
This Southwest deal was found by Cheapflights users on 7/24. 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 10/15:15 pm
PHL
- SAN
2 stops9h 00m
Southwest
Mon 10/51:15 pm
SAN
- PHL
2 stops8h 45m
Southwest
Deal found 7/24![Southwest logo]()
$438
This Southwest deal was found by Cheapflights users on 7/26. 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 10/85:10 pm
PHL
- SAN
2 stops9h 55m
Southwest
Mon 10/121:05 pm
SAN
- PHL
2 stops8h 55m
Southwest
Deal found 7/26![Southwest logo]()
$439
Last-minute flights from Philadelphia to San DiegoDiscover last-minute flight deals from Philadelphia to San Diego. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to San Diego. Data last updated July 28, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 7/25. 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 7/2811:06 am
PHL
- SAN
1 stop30h 02m
Frontier
Fri 7/316:35 am
SAN
- PHL
1 stop9h 54m
Frontier
Deal found 7/25![Frontier logo]()
$373
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 7/308:37 pm
PHL
- SAN
1 stop30h 14m
Frontier
Mon 8/38:51 pm
SAN
- PHL
1 stop30h 09m
Frontier
Deal found 7/27![Frontier logo]()
$372
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 8/78:37 pm
PHL
- SAN
1 stop15h 33m
Frontier
Sun 8/166:25 am
SAN
- PHL
1 stop26h 24m
Frontier
Deal found 7/27![Frontier logo]()
$368
This Cheapflightsfares deal was found by Cheapflights users on 7/27. 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 8/138:37 pm
PHL
- SAN
1 stop15h 33m
Frontier
Sun 8/168:51 pm
SAN
- PHL
1 stop30h 09m
Frontier
Deal found 7/27![Frontier logo]()
$364
This Frontier deal was found by Cheapflights users on 7/28. 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 8/1311:06 am
PHL
- SAN
1 stop12h 00m
Frontier
Fri 8/213:45 pm
SAN
- PHL
1 stop10h 54m
Frontier
Deal found 7/28![Frontier logo]()
$365
This CheapOair deal was found by Cheapflights users on 7/28. 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 8/138:37 pm
PHL
- SAN
1 stop15h 33m
Multiple Airlines
Wed 8/198:40 pm
SAN
- PHL
1 stop8h 42m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/1411:06 am
PHL
- SAN
1 stop12h 00m
Frontier
Wed 8/196:25 am
SAN
- PHL
2 stops21h 50m
Frontier
Deal found 7/28![Frontier logo]()
$362
This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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.
Sun 8/168:37 pm
PHL
- SAN
1 stop30h 14m
Frontier
Fri 8/213:45 pm
SAN
- PHL
1 stop10h 54m
Frontier
Deal found 7/28![Frontier logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/168:37 pm
PHL
- SAN
1 stop15h 33m
Frontier
Tue 8/256:25 am
SAN
- PHL
2 stops20h 14m
Frontier
Deal found 7/27![Frontier logo]()
$363
This Frontier deal was found by Cheapflights users on 7/28. 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 8/1711:06 am
PHL
- SAN
1 stop12h 00m
Frontier
Wed 8/193:45 pm
SAN
- PHL
1 stop10h 54m
Frontier
Deal found 7/28![Frontier logo]()
$358
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/198:15 am
PHL
- SAN
1 stop10h 26m
Multiple Airlines
Tue 12/84:50 pm
SAN
- PHL
1 stop9h 37m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$369
This Southwest deal was found by Cheapflights users on 7/28. 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 8/226:30 am
PHL
- SAN
2 stops9h 10m
Southwest
Thu 12/108:25 am
SAN
- PHL
2 stops9h 55m
Southwest
Deal found 7/28![Southwest logo]()
$361
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 July 28, 2026.
Search for one-way flight options from Philadelphia to San Diego. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Trip.com deal was found by Cheapflights users on 7/28. 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.
Tue 8/117:20 am
PHL
- SAN
2 stops14h 40m
Frontier
Deal found 7/28![Frontier logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/108:37 pm
PHL
- SAN
1 stop15h 33m
Frontier
Deal found 7/25![Frontier logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 9/268:00 am
PHL
- SAN
1 stop30h 52m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$208
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/157:20 am
PHL
- SAN
2 stops14h 40m
Frontier
Deal found 7/27![Frontier logo]()
$209
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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 8/187:33 am
PHL
- SAN
2 stops14h 48m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$210
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Sun 9/65:55 pm
PHL
- SAN
Nonstop5h 40m
American Airlines
Deal found 7/26![American Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 10/255:57 pm
PHL
- SAN
2 stops21h 43m
Frontier
Deal found 7/28![Frontier logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/127:20 am
PHL
- SAN
2 stops19h 31m
Frontier
Deal found 7/28![Frontier logo]()
$213
This Southwest deal was found by Cheapflights users on 7/24. 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 9/86:00 am
PHL
- SAN
1 stop7h 35m
Southwest
Deal found 7/24![Southwest logo]()
$214
This Southwest deal was found by Cheapflights users on 7/27. 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 12/221:45 pm
PHL
- SAN
1 stop10h 15m
Southwest
Deal found 7/27![Southwest logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/238:30 am
PHL
- SAN
2 stops18h 21m
Frontier
Deal found 7/25![Frontier logo]()
$217
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 July 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $354 (Cheapflightsfares) |
One-way from | $206 (Trip.com) |
Popular in | June |
Cheapest in | September |
Average price | $494 |
Good round-trip deal | $481 or less |
Good one-way deal | $345 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 2,558,603 searches. Data last updated July 28, 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 - SAN
PHLSAN
Philadelphia
Wed 10/7
11:25 am-6:55 pm
2 stops10h 30m
San Diego
Wed 10/14
9:15 am-9:30 pm
2 stops9h 15m
$379
PhiladelphiaSan Diego
PHL - SAN
PHLSAN
Philadelphia
Fri 10/2
5:10 pm-12:05 am
2 stops9h 55m
San Diego
Sat 10/3
6:30 am-7:15 pm
1 stop9h 45m
$386
PhiladelphiaSan Diego
PHL - SAN
PHLSAN
Philadelphia
Mon 8/24
2:10 pm-9:55 pm
2 stops10h 45m
San Diego
Sat 8/29
11:10 am-10:50 pm
2 stops8h 40m
$391
Quickest round-trip
PhiladelphiaSan Diego
PHL - SAN
PHLSAN
Philadelphia
Sun 9/20
5:00 am-9:40 am
1 stop7h 40m
San Diego
Sat 9/26
10:40 pm-11:10 am
1 stop9h 30m
$410
PhiladelphiaSan Diego
PHL - SAN
PHLSAN
Philadelphia
Tue 8/11
2:45 pm-9:05 pm
2 stops9h 20m
San Diego
Tue 8/18
10:40 pm-11:35 am
1 stop9h 55m
$427
PhiladelphiaSan Diego
PHL - SAN
PHLSAN
Philadelphia
Thu 9/17
7:00 am-6:43 pm
2 stops14h 43m
San Diego
Sat 9/26
1:57 pm-5:40 am
2 stops12h 43m
$432
PhiladelphiaSan Diego
PHL - SAN
PHLSAN
Philadelphia
Wed 8/12
2:45 pm-9:05 pm
2 stops9h 20m
San Diego
Wed 9/30
6:45 am-6:00 pm
2 stops8h 15m
$432
PhiladelphiaSan Diego
PHL - SAN
PHLSAN
Philadelphia
Wed 9/9
3:05 pm-8:55 pm
2 stops8h 50m
San Diego
Sun 9/13
10:45 am-12:15 am
2 stops10h 30m
$437
PhiladelphiaSan Diego
PHL - SAN
PHLSAN
Philadelphia
Thu 10/1
5:15 pm-11:15 pm
2 stops9h 00m
San Diego
Mon 10/5
1:15 pm-1:00 am
2 stops8h 45m
$438
PhiladelphiaSan Diego
PHL - SAN
PHLSAN
Philadelphia
Sat 9/19
7:00 am-6:37 pm
2 stops14h 37m
San Diego
Wed 9/23
1:57 pm-5:40 am
2 stops12h 43m
$439
Showing 1-10 of 23 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 July.
| 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 Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| 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 68 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, September is the cheapest month in which you can book a flight from Philadelphia to San Diego (average of $404). 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 July 28, 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 July 28, 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.
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
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
Poway
La Mesa
Coronado
Santee
San Ysidro
Julian
Lemon Grove
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
Complete your trip
Flights by cabin class
Other flight options
Other flights from Philadelphia
Popular flights
San Diego flight routes
Alternative routes for Philadelphia to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to San Diego by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Philadelphia to San Diego by cabin class
Find flights from Philadelphia to San Diego, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Philadelphia and San Diego flights
Browse other Philadelphia and San Diego flight options. Last updated on July 28, 2026.
Other flights from Philadelphia
Browse through other flights departing from Philadelphia. Flights are based on user searches made on Cheapflights and were last updated on July 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 28, 2026.
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 2,558,603 searches. Data last updated July 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$141 | Average$291 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$243 | Average$386 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$254 | Average$444 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$276 | Average$452 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$323 | Average$486 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$350 | Average$487 | FlexibilityNo cancel fee | On-time63% |