San Francisco

$179+ 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
Aug 16 — Aug 231
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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 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 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 July 17, 2026.

This American Airlines deal was found by Cheapflights users on 7/13. 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.
Fri 8/216:00 pm
PHL
-
SFO
Nonstop6h 09m
American Airlines
Sun 8/2310:12 pm
SFO
-
PHL
Nonstop5h 32m
American Airlines
Deal found 7/13$349
This Frontier deal was found by Cheapflights users on 7/15. 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.
Tue 7/2111:06 am
PHL
-
SFO
1 stop11h 46m
Frontier
Thu 7/309:39 pm
SFO
-
PHL
1 stop11h 10m
Frontier
Deal found 7/15$350
This Southwest deal was found by Cheapflights users on 7/13. 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 11/55:00 am
PHL
-
SFO
1 stop8h 30m
Southwest
Sun 11/811:35 pm
SFO
-
PHL
1 stop8h 25m
Southwest
Deal found 7/13$351
This CheapOair deal was found by Cheapflights users on 7/15. 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 7/1711:06 am
PHL
-
SFO
1 stop11h 46m
Frontier
Tue 8/49:00 pm
SFO
-
PHL
1 stop30h 00m
Frontier
Deal found 7/15$352
This CheapOair deal was found by Cheapflights users on 7/15. 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 9/2510:45 am
PHL
-
SFO
2 stops15h 46m
Multiple Airlines
Mon 9/287:17 pm
SFO
-
PHL
1 stop7h 19m
Multiple Airlines
Deal found 7/15$353
This CheapOair deal was found by Cheapflights users on 7/13. 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 9/188:44 pm
PHL
-
SFO
1 stop23h 13m
Multiple Airlines
Mon 9/2111:59 pm
SFO
-
PHL
2 stops11h 31m
Multiple Airlines
Deal found 7/13$354
This United Airlines deal was found by Cheapflights users on 7/12. 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 11/49:55 am
PHL
-
SFO
1 stop9h 20m
United Airlines
Sun 11/812:07 pm
SFO
-
PHL
Nonstop5h 19m
United Airlines
Deal found 7/12$355
This Southwest deal was found by Cheapflights users on 7/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/123:05 pm
PHL
-
SFO
2 stops9h 15m
Southwest
Wed 8/1911:15 am
SFO
-
PHL
2 stops9h 35m
Southwest
Deal found 7/13$356
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 7/2712:54 pm
PHL
-
SFO
1 stop14h 29m
Frontier
Sat 8/297:30 pm
SFO
-
PHL
1 stop7h 09m
Frontier
Deal found 7/13$357
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 7/308:37 pm
PHL
-
SFO
1 stop27h 17m
Frontier
Sun 8/26:00 am
SFO
-
PHL
1 stop20h 39m
Frontier
Deal found 7/17$358
This United Airlines deal was found by Cheapflights users on 7/14. 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 8/149:27 am
PHL
-
SFO
Nonstop6h 03m
United Airlines
Wed 8/192:05 pm
SFO
-
PHL
1 stop7h 54m
United Airlines
Deal found 7/14$359
This Frontier deal was found by Cheapflights users on 7/15. 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.
Tue 7/2111:06 am
PHL
-
SFO
1 stop11h 46m
Frontier
Tue 7/284:30 pm
SFO
-
PHL
1 stop10h 30m
Frontier
Deal found 7/15$360

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 July 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$349
(American Airlines)

One-way from

$179
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$427

Good round-trip deal

$405 or less

Good one-way deal

$274 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 ($20 potential increase over avg. RT price).
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in July 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 July 17, 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

Price

Cheapest round-trip

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Tue 8/11

3:05 pm-9:40 pm

2 stops9h 35m

San Francisco

Tue 8/18

11:15 am-11:50 pm

2 stops9h 35m

$361

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 10/1

5:20 am-1:05 pm

2 stops10h 45m

San Francisco

Tue 10/6

10:20 am-11:30 pm

2 stops10h 10m

$374

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 8/13

5:15 am-11:55 am

1 stop9h 40m

San Francisco

Mon 8/17

7:25 pm-6:05 am

1 stop7h 40m

$379

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 8/13

5:25 am-11:55 am

2 stops9h 30m

San Francisco

Mon 8/17

5:35 am-5:55 pm

1 stop9h 20m

$393

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Tue 10/13

5:30 am-1:55 pm

2 stops11h 25m

San Francisco

Wed 10/14

10:20 am-11:30 pm

2 stops10h 10m

$403

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Mon 9/21

2:05 pm-8:35 pm

2 stops9h 30m

San Francisco

Mon 10/5

12:05 pm-1:00 am

2 stops9h 55m

$403

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 9/3

5:55 am-1:10 pm

2 stops10h 15m

San Francisco

Sun 9/6

6:35 am-9:20 pm

2 stops11h 45m

$409

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 8/14

5:25 am-11:55 am

2 stops9h 30m

San Francisco

Fri 8/21

7:00 am-9:05 pm

2 stops11h 05m

$419
Quickest round-trip

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 7/30

6:23 pm-9:33 pm

Nonstop6h 10m

San Francisco

Wed 8/5

11:20 pm-7:50 am

Nonstop5h 30m

$426

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sun 8/16

5:05 pm-11:15 pm

2 stops9h 10m

San Francisco

Sat 8/22

5:00 am-6:20 pm

2 stops10h 20m

$433

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Showing 1-10 of 22 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy2 starsTrust Score*3 stars
WAYAPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust 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 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.
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, September is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of $384). Flying from Philadelphia to San Francisco in June is currently the most expensive (average of $456). 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 July 17, 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.

How much does it cost to fly round-trip from Philadelphia to San Francisco?

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 July 17, 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.

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

James,Aug 2023

SEA - SFO

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

James,Aug 2023

SEA - SFO

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

James,Aug 2023

SEA - SFO

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

James,Aug 2023

SEA - SFO

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

James,Aug 2023

SEA - SFO

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

Food

7.2

Overall

7.8

Entertainment

7.8

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

James,Aug 2023

SEA - SFO

Crew was nice and courteous. Boarding went smoothly. But we experienced a few minutes of extreme turbulence.

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 17 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 5h 58m.

  • 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 9h 35m. Fly via Southwest 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 Frontier is currently your cheapest option to San Francisco, with prices starting at $160. Additional round-trip tickets that might be worth considering are offered by Southwest and Delta, with the lowest prices starting at $231 and $257, respectively. These flights start at 61% lower than the current average price 3 months from now.

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

    $84 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on JetBlue and Delta, with prices starting from $128 and $135, 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 Air China (88%), ANA (83%) or Aer Lingus (77%) 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 $1,446, our data indicates the cheapest price to be $198. The most popular route (Philadelphia - San Francisco), is priced around $245.

  • 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, September is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of $384). Flying from Philadelphia to San Francisco in June is currently the most expensive (average of $456). 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 Clara
Santa Cruz
Fairfield
Burlingame
Rancho Cordova
Roseville
Cupertino
Emeryville
Newark
Watsonville
San Bruno
Hayward
San Ramon
Redwood City
San Carlos
Turlock
Vallejo
San Lorenzo
Davis

Browse thousands of different options on Cheapflights for your next trip

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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 July 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$160Average$282FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$231Average$458FlexibilityNo cancel feeOn-time63%
DeltaCheapest$257Average$378FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$269Average$338FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$289Average$423FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$289Average$429FlexibilityNo cancel feeOn-time71%

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