San Francisco

$163+ Cheap flights from Philadelphia to San Francisco (PHL - SFO)

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 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
Feb 20 — Feb 271
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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

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Cheapflights Tip: The best prices from Philadelphia to San Francisco are usually found in September or February, booked 70 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Philadelphia to San Francisco

Cheapest flights from Philadelphia to San Francisco
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 January 21, 2026.

This United Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:35 am
PHL
-
SFO
Nonstop6h 31m
United Airlines
Wed 2/251:12 pm
SFO
-
PHL
Nonstop5h 21m
United Airlines
Deal found 1/19$289
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:17 pm
PHL
-
SFO
Nonstop6h 32m
American Airlines
Mon 2/2311:49 pm
SFO
-
PHL
Nonstop5h 19m
American Airlines
Deal found 1/20$290
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 2/137:12 pm
PHL
-
SFO
1 stop29h 43m
Frontier
Sat 2/216:15 am
SFO
-
PHL
2 stops15h 02m
Frontier
Deal found 1/19$292
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:02 pm
PHL
-
SFO
2 stops22h 01m
Frontier
Fri 2/2010:34 pm
SFO
-
PHL
1 stop9h 44m
Frontier
Deal found 1/20$293
This Frontier deal was found by Cheapflights users on 1/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/155:42 pm
PHL
-
SFO
1 stop9h 46m
Frontier
Fri 2/206:15 am
SFO
-
PHL
1 stop8h 40m
Frontier
Deal found 1/20$294
This Frontier deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/137:05 pm
PHL
-
SFO
1 stop8h 23m
Frontier
Fri 2/2010:28 am
SFO
-
PHL
1 stop11h 44m
Frontier
Deal found 1/19$295
This Frontier deal was found by Cheapflights users on 1/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2112:23 pm
PHL
-
SFO
1 stop12h 32m
Frontier
Sun 2/2210:46 pm
SFO
-
PHL
1 stop9h 32m
Frontier
Deal found 1/21$296
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/155:42 pm
PHL
-
SFO
1 stop9h 46m
Frontier
Mon 2/233:08 pm
SFO
-
PHL
2 stops18h 31m
Frontier
Deal found 1/20$297
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/181:35 pm
PHL
-
SFO
2 stops20h 45m
Frontier
Sun 2/2210:46 pm
SFO
-
PHL
1 stop9h 32m
Frontier
Deal found 1/20$298
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/136:20 pm
PHL
-
SFO
Nonstop6h 30m
United Airlines
Mon 2/2311:59 pm
SFO
-
PHL
1 stop7h 25m
United Airlines
Deal found 1/21$299
This CheapOair deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:00 am
PHL
-
SFO
1 stop21h 51m
JetBlue
Tue 3/318:15 pm
SFO
-
PHL
1 stop8h 45m
JetBlue
Deal found 1/19$301
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 2/137:05 pm
PHL
-
SFO
1 stop15h 58m
Frontier
Mon 2/238:18 pm
SFO
-
PHL
2 stops37h 04m
Frontier
Deal found 1/21$302

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 January 21, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$289
(United Airlines)

One-way from

$163
(Kiwi.com)

Popular in

November

Cheapest in

September

Average price

$431

Good round-trip deal

$374 or less

Good one-way deal

$273 or less
Provider with most accurate pricing for Philadelphia-San Francisco flight deals.
Provider most trusted by Cheapflights users for Philadelphia-San Francisco flights.
From Philadelphia to San Francisco
One-way flight from Philadelphia to San Francisco
Highest demand for flights based on searches. 4% potential increase in price ($17 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from Philadelphia to San Francisco.
Price to beat on a one-way flight from Philadelphia to San Francisco.

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 2,558,603 searches. Data last updated January 21, 2026.
Use the filters below to find and compare flights from Philadelphia to San Francisco that are best for you.

Fly from

Philadelphia

Fly to

San Francisco

Route

Depart

Return

Price

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 4/17

5:59 pm-9:19 pm

Nonstop6h 20m

San Francisco

Sat 4/25

6:10 am-2:40 pm

Nonstop5h 30m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sun 3/1

8:35 am-12:06 pm

Nonstop6h 31m

San Francisco

Sat 3/7

1:40 pm-12:16 am

1 stop7h 36m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 4/17

6:47 pm-12:19 am

1 stop8h 32m

San Francisco

Sat 4/25

11:35 pm-8:15 am

Nonstop5h 40m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 3/18

6:05 am-10:45 am

1 stop7h 40m

San Francisco

Mon 3/23

5:01 pm-5:41 am

1 stop9h 40m

$309

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 3/14

6:05 am-10:51 am

1 stop7h 46m

San Francisco

Fri 3/20

7:19 pm-5:41 am

1 stop7h 22m

$309

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 3/25

6:54 pm-12:02 am

1 stop8h 08m

San Francisco

Sun 3/29

7:19 pm-5:41 am

1 stop7h 22m

$319

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 2/26

6:50 pm-11:54 pm

1 stop8h 04m

San Francisco

Tue 3/3

10:20 am-11:46 pm

2 stops10h 26m

$321

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 4/17

1:05 pm-8:24 pm

1 stop10h 19m

San Francisco

Sat 4/25

10:34 am-12:51 am

2 stops11h 17m

$326

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 3/12

5:00 pm-12:35 am

1 stop10h 35m

San Francisco

Wed 3/18

4:47 pm-5:41 am

2 stops9h 54m

$326

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 2/12

10:06 am-3:51 pm

1 stop8h 45m

San Francisco

Mon 2/16

11:20 pm-9:48 am

1 stop7h 28m

$330

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 24 results
1
2
3

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-San Francisco flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Philadelphia-San Francisco flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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.
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?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to San Francisco. Price data was last updated on January 16, 2026.

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 70 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, February is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of $71). Flying from Philadelphia to San Francisco in May is currently the most expensive (average of $181). 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 January 21, 2026.

When flying from Philadelphia to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Harriet Baskas

Harriet Baskas

Expert on SFO

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

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 January 21, 2026.
Read reviews from past customers who have flown Southwest, Delta, and United 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.

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Boarding

8.1

Entertainment

7.5

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.
  • What airports do I use to fly from Philadelphia to San Francisco?

    You will need to book a flight from Philadelphia to San Francisco if you want to fly from Philadelphia to San Francisco. At least 6 different airlines have flights from Philadelphia (PHL) to San Francisco (SFO) on a regular basis. There are 9 flights to San Francisco from the Philadelphia airport per day. If you manage to book one that is nonstop, then you can expect the flight time from PHL to SFO to be around 6h 18m.

  • How popular is this Philadelphia to San Francisco flight route?

  • How long is the flight from Philadelphia to San Francisco?

    There are many flights that can get you from Philadelphia to San Francisco in 6h 20m. Fly via American Airlines, United Airlines, or Delta to get the fastest option. The distance between Philadelphia and San Francisco is about 2513 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Philadelphia to San Francisco round-trip?

    Flying on JetBlue is currently your cheapest option to San Francisco, with prices starting at $136. Additional round-trip tickets that might be worth considering are offered by Frontier and Southwest, with the lowest prices starting at $137 and $179, respectively. These flights start at 65% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Philadelphia to San Francisco one-way?

    $71 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Frontier and JetBlue, with prices starting from $77 and $128, respectively.

  • What are the most reliable airlines from Philadelphia to San Francisco?

    No one likes to see their flight delayed. When booking a flight from Philadelphia to San Francisco consider choosing Aer Lingus (84%), Qantas Airways (81%) or China Southern (79%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Philadelphia to San Francisco?

    Looking for the cheapest flight from Philadelphia to San Francisco? While on average our users pay $1,182, our data indicates the cheapest price to be $168. The most popular route (Philadelphia - San Francisco), is priced around $183.

  • Where are the most common layover locations when flying from Philadelphia to San Francisco?

  • What are some popular things to do or see while on a layover in Atlanta?

    Georgia Aquarium, Fox Theatre, and Centennial Olympic Park are the most popular attractions in Atlanta if you're in need of something to do during your layover. Georgia Aquarium, Fox Theatre and Centennial Olympic Park are located about 8.6 mi, 9.3 mi, and 8.4 mi, respectively from Atlanta Hartsfield-Jackson if you are interested in checking them out. Travelers can book a car rental at Atlanta Hartsfield-Jackson for about $51 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Detroit?

    Fillmore Detroit, Fox Theatre, and Masonic Temple are the most popular attractions in Detroit if you're in need of something to do during your layover. Fillmore Detroit, Fox Theatre, and Masonic Temple are located about 17.3 mi, 17.3 mi, and 17.0 mi, respectively from Detroit Metropolitan Wayne County. Those landing in Detroit looking to spend some time exploring during their layover can rent a car for about $59 per day.

  • Where are the least popular layover locations for Philadelphia to San Francisco flights?

  • Can I find deals for flights from Philadelphia to San Francisco that include hotel bookings?

    Yes. In addition to deals on Philadelphia to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to San Francisco.

  • Can I find deals for business class flights from Philadelphia to San Francisco?

    Yes. Cheapflights offers flight deals from Philadelphia to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Philadelphia to San Francisco?

    Currently, February is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of $71). Flying from Philadelphia to San Francisco in May is currently the most expensive (average of $181). 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.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
South San Francisco
Santa Cruz
Roseville
Santa Clara
Livermore
Watsonville
San Bruno
Daly City
Sunnyvale
Vacaville
Turlock
San Carlos
San Ramon
Manteca
Vallejo
San Lorenzo
Davis
Hollister
Redwood City
Union City

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Alternative routes for Philadelphia to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

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 2,558,603 searches. Data last updated January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$136Average$286FlexibilityNo cancel feeOn-time62%
FrontierCheapest$137Average$266FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$179Average$448FlexibilityNo cancel feeOn-time63%
DeltaCheapest$276Average$343FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$280Average$395FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$289Average$403FlexibilityNo cancel feeOn-time69%

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