$203+ Cheap flights from Philadelphia to San Francisco (PHL - SFO)
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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
Oct 9 — Oct 161
Round-trip
1 adult, Economy
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Find cheap flights from Philadelphia to San Francisco 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 Francisco are usually found in April or October, booked 83 days in advance, depart on a Wednesday or Thursday and return on a Wednesday
Cheap flight deals from Philadelphia to San Francisco
Cheapest
Best
Last-minute
One-way
Cheapest flights from Philadelphia to San FranciscoExplore the most affordable flight options available from Philadelphia to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
Explore the most affordable flight options available from Philadelphia to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 9, 2026.
This Gotogate deal was found by Cheapflights users on 9/5. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2612:40 pm -
1 stop10h 08m
Sun 9/277:00 am -
1 stop19h 40m
Deal found 9/5![Multiple Airlines logo]()
$349
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:41 am -
1 stop14h 07m
Wed 10/2811:52 pm -
1 stop11h 21m
Deal found 9/6![Frontier logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 10/712:40 pm -
1 stop10h 28m
Thu 10/158:58 am -
2 stops11h 45m
Deal found 9/5![Frontier logo]()
$351
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.
Fri 9/2512:40 pm -
1 stop10h 08m
Mon 9/288:24 pm -
2 stops18h 50m
Deal found 9/7![Frontier logo]()
$352
This Expedia deal was found by Cheapflights users on 9/5. 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.
Sat 10/37:02 am -
2 stops13h 42m
Thu 10/810:19 pm -
1 stop29h 59m
Deal found 9/5![Multiple Airlines logo]()
$353
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:40 pm -
1 stop10h 08m
Thu 10/111:58 pm -
1 stop11h 23m
Deal found 9/7![Frontier logo]()
$354
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 11/38:30 am -
1 stop12h 40m
Sat 11/73:08 pm -
1 stop11h 24m
Deal found 9/6![Multiple Airlines logo]()
$355
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.
Mon 11/95:22 pm -
1 stop27h 48m
Fri 11/1311:52 pm -
1 stop11h 21m
Deal found 9/8![Frontier logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 10/108:44 pm -
1 stop14h 29m
Thu 10/158:58 am -
2 stops11h 45m
Deal found 9/5![Frontier logo]()
$357
This Expedia deal was found by Cheapflights users on 9/5. 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 10/28:41 am -
1 stop14h 07m
Sun 10/411:58 pm -
1 stop11h 23m
Deal found 9/5![Frontier logo]()
$358
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.
Thu 10/154:17 pm -
1 stop10h 09m
Tue 10/202:57 pm -
1 stop21h 17m
Deal found 9/7![Alaska Airlines logo]()
$359
This Frontier deal was found by Cheapflights users on 9/5. 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 9/912:40 pm -
1 stop10h 28m
Tue 9/2211:58 pm -
1 stop11h 23m
Deal found 9/5![Frontier logo]()
$360
Best flights from Philadelphia to San FranciscoDiscover carefully curated flight deals from Philadelphia to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
Discover carefully curated flight deals from Philadelphia to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 9, 2026.
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.
Fri 10/26:59 pm -
1 stop16h 50m
Mon 10/510:40 am -
2 stops16h 01m
Deal found 9/7![Alaska Airlines logo]()
$406
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/245:25 am -
2 stops12h 10m
Sat 10/315:10 am -
2 stops11h 50m
Deal found 9/6![Southwest logo]()
$409
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:05 pm -
1 stop8h 35m
Mon 10/198:58 pm -
2 stops10h 51m
Deal found 9/7![Delta logo]()
$456
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.
Sun 9/276:05 am -
1 stop8h 39m
Sat 10/38:48 am -
Nonstop5h 33m
Deal found 9/6![United Airlines logo]()
$519
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.
Tue 11/37:02 am -
2 stops14h 04m
Sat 11/78:33 am -
1 stop17h 59m
Deal found 9/9![Alaska Airlines logo]()
$406
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/125:00 am -
2 stops11h 05m
Mon 11/169:25 am -
2 stops11h 00m
Deal found 9/6![Southwest logo]()
$409
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.
Fri 9/254:48 pm -
1 stop9h 40m
Sat 10/311:40 am -
2 stops15h 01m
Deal found 9/7![Alaska Airlines logo]()
$406
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.
Fri 12/45:56 pm -
1 stop19h 31m
Tue 12/812:11 pm -
2 stops14h 16m
Deal found 9/6![Alaska Airlines logo]()
$406
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:15 pm -
2 stops10h 25m
Tue 10/610:20 am -
2 stops10h 15m
Deal found 9/7![Southwest logo]()
$478
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/242:15 pm -
1 stop14h 00m
Mon 11/306:00 am -
2 stops11h 00m
Deal found 9/8![Southwest logo]()
$494
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 10/87:02 am -
1 stop12h 06m
Sat 10/178:20 am -
2 stops18h 21m
Deal found 9/6![Alaska Airlines logo]()
$466
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 10/87:02 am -
1 stop12h 06m
Tue 10/1311:40 am -
2 stops15h 01m
Deal found 9/6![Alaska Airlines logo]()
$466
Last-minute flights from Philadelphia to San FranciscoDiscover last-minute flight deals from Philadelphia to San Francisco. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Philadelphia to San Francisco. Data last updated September 9, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 9/5. 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 9/912:40 pm -
1 stop10h 28m
Tue 9/2211:58 pm -
1 stop11h 23m
Deal found 9/5![Frontier logo]()
$360
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:41 am -
1 stop14h 07m
Wed 10/2811:52 pm -
1 stop11h 21m
Deal found 9/6![Frontier logo]()
$350
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:40 pm -
1 stop10h 08m
Thu 10/111:58 pm -
1 stop11h 23m
Deal found 9/7![Frontier logo]()
$354
This Expedia deal was found by Cheapflights users on 9/5. 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 9/2312:40 pm -
1 stop10h 28m
Sun 9/277:00 am -
1 stop19h 40m
Deal found 9/5![Multiple Airlines logo]()
$355
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.
Fri 9/2512:40 pm -
1 stop10h 08m
Mon 9/288:24 pm -
2 stops18h 50m
Deal found 9/7![Frontier logo]()
$352
This Gotogate deal was found by Cheapflights users on 9/5. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2612:40 pm -
1 stop10h 08m
Sun 9/277:00 am -
1 stop19h 40m
Deal found 9/5![Multiple Airlines logo]()
$349
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.
Sat 9/2612:40 pm -
1 stop10h 08m
Fri 10/210:24 pm -
2 stops16h 50m
Deal found 9/8![Frontier logo]()
$361
This Expedia deal was found by Cheapflights users on 9/5. 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 10/28:41 am -
1 stop14h 07m
Sun 10/411:58 pm -
1 stop11h 23m
Deal found 9/5![Frontier logo]()
$358
This Expedia deal was found by Cheapflights users on 9/5. 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.
Sat 10/37:02 am -
2 stops13h 42m
Thu 10/810:19 pm -
1 stop29h 59m
Deal found 9/5![Multiple Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 10/712:40 pm -
1 stop10h 28m
Thu 10/158:58 am -
2 stops11h 45m
Deal found 9/5![Frontier logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 10/108:44 pm -
1 stop14h 29m
Thu 10/158:58 am -
2 stops11h 45m
Deal found 9/5![Frontier logo]()
$357
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 10/154:17 pm -
1 stop10h 09m
Tue 10/206:07 am -
1 stop8h 31m
Deal found 9/6![Alaska Airlines logo]()
$359
One-way flights from Philadelphia to San FranciscoSearch for one-way flight options from Philadelphia to San Francisco. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
Search for one-way flight options from Philadelphia to San Francisco. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/5. 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 9/255:32 pm -
2 stops17h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$203
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.
Mon 12/77:00 am -
1 stop18h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Frontier logo]()
$204
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/83:20 pm -
1 stop11h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Southwest logo]()
$205
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.
Wed 9/307:00 am -
2 stops13h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Alaska Airlines logo]()
$207
This CheapOair deal was found by Cheapflights users on 9/5. 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.
Sun 10/48:41 am -
2 stops31h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$208
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:40 pm -
1 stop10h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$209
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/67:02 am -
1 stop11h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Alaska Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 9/4. 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 10/156:03 pm -
1 stop26h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Frontier logo]()
$212
This Frontier deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/62:45 pm -
1 stop11h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Frontier logo]()
$213
This American Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:35 pm -
Nonstop6h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![American Airlines logo]()
$214
Find flight deals from Philadelphia to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to San Francisco (SFO). 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 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $349 (Gotogate) |
One-way from | $203 (Kiwi.com) |
Popular in | June |
Cheapest in | April |
Average price | $430 |
Good round-trip deal | $401 or less |
Good one-way deal | $262 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Philadelphia to San Francisco 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 9, 2026.
Use the filters below to find and compare flights from Philadelphia to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Wed 10/21
7:02 am-7:31 pm
2 stops15h 29m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$207
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Mon 9/28
4:05 pm-10:55 pm
1 stop9h 50m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$224
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Sun 11/22
5:00 am-1:05 pm
2 stops11h 05m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Sat 11/21
4:35 pm-12:20 am
2 stops10h 45m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$229
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Mon 10/19
5:20 am-1:05 pm
2 stops10h 45m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$245
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Fri 11/27
5:00 am-1:05 pm
2 stops11h 05m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$245
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Thu 10/8
5:20 am-1:05 pm
2 stops10h 45m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$274
Quickest round-trip
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Sun 10/25
6:00 am-9:22 am
Nonstop6h 22m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$279
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Fri 10/9
4:17 pm-8:49 am
2 stops19h 32m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$294
PhiladelphiaSan Francisco
PHL Philadelphia - SFO San Francisco
PHLSFO
Philadelphia
Fri 10/2
6:59 pm-8:49 am
1 stop16h 50m
San Francisco
Mon 10/5
10:40 am-5:41 am
2 stops16h 01m
$406
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Philadelphia to San Francisco
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 Francisco 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 Accuracy2 stars | Trust Score*3 stars | |
| 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 Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Philadelphia-San Francisco flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Philadelphia-San Francisco 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 Francisco 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 Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Philadelphia with our price prediction graph.
PHL-SFO
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 Francisco
How far ahead should I book a flight from Philadelphia to San Francisco?
The price you pay for your flight from Philadelphia to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Philadelphia to San Francisco?
Currently, April is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of $394). Flying from Philadelphia to San Francisco in June is currently the most expensive (average of $459). 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 SFO?
Find hourly flight availability from Philadelphia to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 9, 2026.
It’s typically best to fly out from Philadelphia to San Francisco at noon. Doing so could potentially save you 33% on the flight price compared to flying in the morning, which is usually more expensive.
The best insider tips for Philadelphia to San Francisco flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to San Francisco trip
Our travel experts
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 Francisco. Reviews last updated September 9, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from Philadelphia to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Overall
7.8
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Crew
8.5
Overall
7.8
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Crew
8.5
Overall
7.8
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Crew
8.5
Overall
7.8
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Crew
8.5
Overall
7.8
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Crew
8.5
Overall
7.8
Comfort
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Related info for your journey
Find useful and relevant information for your journey from Philadelphia to San Francisco. 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 Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Walnut Creek
Emeryville
San Bruno
Burlingame
Rancho Cordova
Roseville
Fairfield
Cupertino
Newark
Hayward
San Ramon
Redwood City
Manteca
Vallejo
San Carlos
Turlock
Davis
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Philadelphia and San Francisco flights
Browse other Philadelphia and San Francisco flight options. Last updated on September 9, 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 September 9, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Other flights to San Francisco
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 9, 2026.
Top 6 airlines flying from Philadelphia to San Francisco
Discover the top 6 airlines that operate flights from Philadelphia to San Francisco. 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 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$160 | Average$285 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$241 | Average$458 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$257 | Average$378 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$271 | Average$344 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$289 | Average$441 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$289 | Average$442 | FlexibilityNo cancel fee | On-time71% |