$159+ 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 12/16. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAN
Nov 25 — Dec 21
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 February or January, booked 88 days in advance, depart on a Tuesday or Wednesday and return on a Saturday
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 October 26, 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 October 26, 2026.
This Expedia deal was found by Cheapflights users on 10/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/167:00 am -
1 stop11h 10m
Tue 12/227:56 pm -
1 stop30h 15m
Deal found 10/21![Multiple Airlines logo]()
$416
This Expedia deal was found by Cheapflights users on 10/24. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:31 pm -
2 stops18h 48m
Mon 3/18:50 pm -
2 stops17h 06m
Deal found 10/24![Multiple Airlines logo]()
$419
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
Thu 12/105:10 pm -
2 stops20h 09m
Sun 12/1312:37 pm -
1 stop7h 49m
Deal found 10/21![Multiple Airlines logo]()
$420
This Southwest deal was found by Cheapflights users on 10/22. 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.
Sat 12/194:15 pm -
2 stops10h 40m
Sat 12/269:25 pm -
2 stops10h 00m
Deal found 10/22![Southwest logo]()
$421
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:36 pm -
2 stops21h 34m
Fri 11/278:50 am -
2 stops17h 35m
Deal found 10/25![Frontier logo]()
$422
This Southwest deal was found by Cheapflights users on 10/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/55:45 am -
1 stop8h 40m
Sat 12/1211:10 am -
1 stop8h 40m
Deal found 10/25![Southwest logo]()
$423
This Frontier deal was found by Cheapflights users on 10/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:00 am -
2 stops20h 57m
Sat 11/215:29 pm -
1 stop8h 56m
Deal found 10/24![Frontier logo]()
$424
This Frontier deal was found by Cheapflights users on 10/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/259:55 pm -
1 stop13h 00m
Thu 12/311:16 am -
2 stops20h 40m
Deal found 10/24![Frontier logo]()
$425
This Mytrip deal was found by Cheapflights users on 10/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:30 am -
2 stops17h 27m
Sat 11/76:25 am -
2 stops13h 59m
Deal found 10/21![Frontier logo]()
$426
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:59 pm -
2 stops25h 09m
Wed 11/116:25 am -
2 stops24h 05m
Deal found 10/22![Frontier logo]()
$427
This Southwest deal was found by Cheapflights users on 10/24. 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.
Wed 12/27:30 am -
2 stops9h 35m
Sat 12/58:15 am -
1 stop7h 20m
Deal found 10/24![Southwest logo]()
$428
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 11/116:00 am -
2 stops20h 57m
Thu 11/199:32 am -
1 stop21h 44m
Deal found 10/21![Frontier logo]()
$429
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 October 26, 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 October 26, 2026.
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Tue 2/96:14 pm -
2 stops25h 34m
Tue 2/165:51 pm -
1 stop20h 05m
Deal found 10/23![Alaska Airlines logo]()
$436
This Southwest deal was found by Cheapflights users on 10/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/185:00 am -
2 stops9h 20m
Tue 12/299:55 pm -
2 stops9h 30m
Deal found 10/25![Southwest logo]()
$447
This Delta deal was found by Cheapflights users on 10/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:15 am -
1 stop7h 34m
Wed 12/212:31 pm -
1 stop8h 23m
Deal found 10/25![Delta logo]()
$501
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:02 am -
2 stops12h 35m
Sun 11/226:15 am -
1 stop20h 25m
Deal found 10/22![Alaska Airlines logo]()
$446
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Fri 12/47:00 am -
2 stops16h 31m
Sun 12/69:55 am -
2 stops16h 45m
Deal found 10/23![Alaska Airlines logo]()
$455
This Southwest deal was found by Cheapflights users on 10/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:15 pm -
2 stops9h 40m
Tue 11/106:30 am -
2 stops12h 00m
Deal found 10/21![Southwest logo]()
$527
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/306:14 pm -
2 stops25h 34m
Mon 2/14:16 pm -
2 stops21h 55m
Deal found 10/20![Alaska Airlines logo]()
$460
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Thu 1/286:14 pm -
2 stops21h 43m
Sun 1/314:16 pm -
2 stops21h 55m
Deal found 10/21![Alaska Airlines logo]()
$480
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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.
Tue 11/177:02 am -
2 stops14h 29m
Wed 1/68:36 am -
1 stop29h 35m
Deal found 10/25![Alaska Airlines logo]()
$490
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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.
Fri 3/125:56 pm -
1 stop18h 56m
Sun 3/216:15 am -
1 stop20h 40m
Deal found 10/23![Alaska Airlines logo]()
$517
Last-minute flights from Philadelphia to San DiegoDiscover last-minute flight deals from Philadelphia to San Diego. Data last updated October 26, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to San Diego. Data last updated October 26, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:36 pm -
2 stops14h 21m
Fri 11/139:32 am -
2 stops18h 49m
Deal found 10/21![Frontier logo]()
$432
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 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
Sat 11/76:25 am -
2 stops13h 59m
Deal found 10/23![Multiple Airlines logo]()
$423
This Mytrip deal was found by Cheapflights users on 10/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:30 am -
2 stops17h 27m
Sat 11/76:25 am -
2 stops13h 59m
Deal found 10/21![Frontier logo]()
$426
This Kiwi.com deal was found by Cheapflights users on 10/21. 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.
Fri 11/67:42 am -
2 stops19h 15m
Tue 11/101:22 pm -
1 stop21h 07m
Deal found 10/21![Multiple Airlines logo]()
$430
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/85:59 pm -
2 stops25h 09m
Wed 11/116:25 am -
2 stops24h 05m
Deal found 10/22![Frontier logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Wed 11/119:30 am -
1 stop29h 22m
Sat 11/146:25 am -
2 stops13h 59m
Deal found 10/25![Multiple Airlines logo]()
$421
This Mytrip deal was found by Cheapflights users on 10/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:36 pm -
3 stops24h 35m
Thu 11/194:53 pm -
2 stops14h 02m
Deal found 10/21![Multiple Airlines logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
1 stop29h 37m
Sat 11/144:53 pm -
2 stops18h 20m
Deal found 10/23![Frontier logo]()
$428
This Frontier deal was found by Cheapflights users on 10/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:00 am -
2 stops20h 57m
Sat 11/215:29 pm -
1 stop8h 56m
Deal found 10/24![Frontier logo]()
$424
This Mytrip deal was found by Cheapflights users on 10/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:36 pm -
2 stops21h 34m
Fri 11/278:50 am -
2 stops17h 35m
Deal found 10/25![Frontier logo]()
$422
This Frontier deal was found by Cheapflights users on 10/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/259:55 pm -
1 stop13h 00m
Thu 12/311:16 am -
2 stops20h 40m
Deal found 10/24![Frontier logo]()
$425
This Frontier deal was found by Cheapflights users on 10/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/259:55 pm -
1 stop13h 00m
Fri 11/275:29 pm -
1 stop8h 56m
Deal found 10/22![Frontier logo]()
$431
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 October 26, 2026.
Search for one-way flight options from Philadelphia to San Diego. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Wed 12/168:40 am -
2 stops12h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$159
This Southwest deal was found by Cheapflights users on 10/22. 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.
Wed 12/167:30 am -
1 stop8h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Southwest logo]()
$161
This Super.com deal was found by Cheapflights users on 10/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/249:55 pm -
1 stop13h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$163
This Cheapflightsfares deal was found by Cheapflights users on 10/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/197:52 pm -
1 stop19h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:00 am -
1 stop29h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2112:39 pm -
2 stops26h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$167
This Mytrip deal was found by Cheapflights users on 10/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/309:55 pm -
2 stops29h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Wed 11/119:30 am -
2 stops17h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Tue 11/105:14 pm -
2 stops42h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$172
This Southwest deal was found by Cheapflights users on 10/22. 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.
Fri 12/116:35 pm -
1 stop7h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Southwest logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:15 am -
2 stops20h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$174
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 October 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $416 (Expedia) |
One-way from | $159 (Kiwi.com) |
Popular in | October |
Cheapest in | February |
Average price | $558 |
Good round-trip deal | $541 or less |
Good one-way deal | $368 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 October 26, 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
Wed 12/16
7:30 am-12:35 pm
1 stop8h 05m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$161
Quickest round-trip
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Fri 12/18
8:45 pm-1:30 am
1 stop7h 45m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$178
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Mon 3/1
5:56 pm-9:51 am
2 stops18h 55m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$190
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Sat 1/16
6:14 pm-12:57 pm
2 stops21h 43m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$193
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Mon 11/16
5:00 am-10:10 am
1 stop8h 10m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$195
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Fri 11/20
5:30 am-1:10 pm
1 stop10h 40m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$226
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Sun 11/15
7:02 am-3:50 pm
1 stop11h 48m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$264
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Sun 1/10
6:14 pm-9:16 am
1 stop18h 02m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$278
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Fri 12/11
6:11 pm-10:00 am
1 stop18h 49m
San Diego
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$303
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Tue 2/9
6:14 pm-4:48 pm
2 stops25h 34m
San Diego
Tue 2/16
5:51 pm-4:56 pm
1 stop20h 05m
$436
Showing 1-10 of 19 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 October.
| 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
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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 87 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, February is the cheapest month in which you can book a flight from Philadelphia to San Diego (average of $426). Flying from Philadelphia to San Diego in October is currently the most expensive (average of $558). 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 October 26, 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.
Boston (BOS) – 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 Denver (DEN) have the shortest average one-way travel time for 1-stop routes: 7h 33m.
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 October 26, 2026.
Read through reviews of airlines operating flights from Philadelphia to San Diego, such as Southwest,United Airlines, andJetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.4
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Entertainment
7.4
Overall
7.9
Boarding
8.1
Comfort
8.0
Crew
8.6
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
San Ysidro
Poway
Coronado
La Mesa
Julian
Santee
Lemon Grove
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Philadelphia and San Diego flights
Browse other Philadelphia and San Diego flight options. Last updated on October 26, 2026.
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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 October 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$185 | Average$300 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$265 | Average$391 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$266 | Average$452 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$312 | Average$422 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$343 | Average$493 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$362 | Average$522 | FlexibilityNo cancel fee | On-time71% |