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$118+ Cheap flights from Philadelphia (PHL) to San Francisco Bay Area

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
Jan 18 — Jan 251
Sun 1/18
Sun 1/25
1 adult, Economy
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Cheap flight deals from Philadelphia to San Francisco Bay Area

Cheapest flights from Philadelphia to San Francisco Bay Area
Explore the most affordable flight options available from Philadelphia to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 19, 2025.

This Frontier deal was found by Cheapflights users on 12/18. 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 12/265:10 amPHL - SFO
1 stop11h 03mFrontier
Mon 1/1211:20 pmSFO - PHL
1 stop8h 54mFrontier
Deal found 12/18$312
This Trip.com deal was found by Cheapflights users on 12/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:10 amPHL - SFO
1 stop11h 03mMultiple Airlines
Wed 1/78:00 amSFO - PHL
2 stops35h 03mMultiple Airlines
Deal found 12/18$328
This Frontier deal was found by Cheapflights users on 12/19. 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.
Sat 12/208:36 pmPHL - SFO
1 stop14h 47mFrontier
Mon 1/1911:46 pmSFO - PHL
1 stop8h 28mFrontier
Deal found 12/19$331
This Frontier deal was found by Cheapflights users on 12/18. 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 12/265:10 amPHL - SFO
1 stop11h 03mFrontier
Sat 1/1011:20 pmSFO - PHL
1 stop8h 53mFrontier
Deal found 12/18$333
This Expedia deal was found by Cheapflights users on 12/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:36 pmPHL - SFO
1 stop14h 47mFrontier
Fri 1/26:24 amSFO - PHL
1 stop20h 07mFrontier
Deal found 12/17$338
This Expedia deal was found by Cheapflights users on 12/16. 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 12/208:36 pmPHL - SFO
1 stop14h 47mMultiple Airlines
Wed 1/78:00 amSFO - PHL
1 stop12h 09mMultiple Airlines
Deal found 12/16$340
This Priceline deal was found by Cheapflights users on 12/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/195:10 amPHL - SFO
1 stop11h 03mFrontier
Mon 1/511:20 pmSFO - PHL
1 stop9h 09mFrontier
Deal found 12/17$342
This Frontier deal was found by Cheapflights users on 12/18. 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 12/265:10 amPHL - SFO
1 stop11h 03mFrontier
Sun 1/1111:35 pmSFO - PHL
1 stop8h 38mFrontier
Deal found 12/18$347
This Frontier deal was found by Cheapflights users on 12/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:36 pmPHL - SFO
1 stop14h 47mFrontier
Fri 12/2611:20 pmSFO - PHL
1 stop8h 48mFrontier
Deal found 12/17$353
This Delta deal was found by Cheapflights users on 12/18. 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.
Wed 12/248:08 amPHL - SFO
1 stop9h 31mDelta
Thu 1/812:46 pmSFO - PHL
1 stop8h 10mDelta
Deal found 12/18$354
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:25 pmPHL - SFO
Nonstop6h 25mUnited Airlines
Fri 1/25:00 amSFO - PHL
1 stop9h 28mUnited Airlines
Deal found 12/17$361
This Frontier deal was found by Cheapflights users on 12/18. 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 12/217:10 amPHL - SJC
1 stop14h 43mFrontier
Sun 1/43:27 pmSJC - PHL
1 stop11h 13mFrontier
Deal found 12/18$382

Find flight deals from Philadelphia to San Francisco Bay Area

Keep the following information in mind while searching for Philadelphia to San Francisco Bay Area flight deals. Data was last updated December 19, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$250
(Alaska Airlines)

One-way from

$118
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$446
Provider with most accurate pricing for Philadelphia-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-San Francisco flights.
Search Deals
From Philadelphia to San Francisco Bay Area
Search Deals
One-way flight from Philadelphia to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to San Francisco Bay Area 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 December 19, 2025.
Use the filters below to find and compare flights from Philadelphia to San Francisco Bay Area that are best for you.

Fly from

Philadelphia

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Sat 1/17

5:50 am-11:30 am

1 stop8h 40m

San Jose

Sat 1/24

7:00 am-7:55 pm

1 stop9h 55m

$251

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Tue 1/13

5:00 am-1:42 pm

1 stop11h 42m

San Jose

Tue 1/20

6:00 am-7:06 pm

1 stop10h 06m

$251

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Thu 1/15

2:31 pm-9:20 pm

1 stop9h 49m

San Jose

Sun 1/18

2:06 pm-12:21 am

1 stop7h 15m

$257

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Wed 1/7

7:00 am-12:26 pm

1 stop8h 26m

San Jose

Wed 1/14

8:05 pm-8:50 am

2 stops9h 45m

$262

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Sat 2/7

5:40 am-12:56 pm

1 stop10h 16m

San Jose

Sat 2/7

10:45 pm-11:43 am

2 stops9h 58m

$262

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Tue 1/13

6:00 am-2:52 pm

2 stops11h 52m

San Jose

Tue 1/20

2:06 pm-12:21 am

1 stop7h 15m

$262

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Thu 1/15

2:31 pm-9:20 pm

1 stop9h 49m

San Jose

Wed 1/21

7:00 am-10:50 pm

2 stops12h 50m

$262

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Thu 1/15

5:50 am-10:55 am

1 stop8h 05m

San Jose

Thu 1/22

6:30 am-4:20 pm

1 stop6h 50m

$277

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Mon 2/9

6:37 pm-11:58 pm

1 stop8h 21m

San Jose

Sat 2/14

6:30 am-11:13 pm

2 stops13h 43m

$282

PhiladelphiaSan Jose

PHL - SJC

PHLSJC

Philadelphia

Wed 3/11

3:45 pm-9:35 pm

1 stop8h 50m

San Jose

Mon 3/16

4:57 pm-5:41 am

1 stop9h 44m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 60 results
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Best time to book a flight from Philadelphia to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area 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 Bay Area

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

Currently, February is the cheapest month in which you can book a flight from Philadelphia to San Francisco Bay Area (average of $71). Flying from Philadelphia to San Francisco Bay Area in July is currently the most expensive (average of $179). 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 XIH?

Find hourly flight availability from Philadelphia to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 19, 2025.

One of the essential ways to save on airfare from Philadelphia to San Francisco Bay Area is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 36% on airfare.

What is the cheapest day to fly from Philadelphia to San Francisco Bay Area?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to San Francisco Bay Area. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to San Francisco Bay Area flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Philadelphia to San Francisco Bay Area

Explore weekly flight availability from Philadelphia to San Francisco Bay Area. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 19, 2025.

The most flights from PHL to zzXIH are scheduled on a Thursday (18 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 on average).

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. 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 Bay Area. Reviews last updated December 19, 2025.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Philadelphia to San Francisco Bay Area by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
7.9
Good
4,252 reviews

Comfort

8.0

Food

7.0

Overall

7.9

Entertainment

7.5

Boarding

8.1

Crew

8.6

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.
Southwest
7.9
Good
4,252 reviews
Southwest
7.9
Good
4,252 reviews

Comfort

8.0

Food

7.0

Overall

7.9

Entertainment

7.5

Boarding

8.1

Crew

8.6

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.
Delta
7.9
Good
8,010 reviews
Southwest
7.9
Good
4,252 reviews

Comfort

8.0

Food

7.0

Overall

7.9

Entertainment

7.5

Boarding

8.1

Crew

8.6

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.
United Airlines
7.4
Good
9,092 reviews
Southwest
7.9
Good
4,252 reviews

Comfort

8.0

Food

7.0

Overall

7.9

Entertainment

7.5

Boarding

8.1

Crew

8.6

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.
American Airlines
7.2
Good
11,042 reviews
Southwest
7.9
Good
4,252 reviews

Comfort

8.0

Food

7.0

Overall

7.9

Entertainment

7.5

Boarding

8.1

Crew

8.6

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.
Frontier
5.8
Fair
3,081 reviews
Southwest
7.9
Good
4,252 reviews

Comfort

8.0

Food

7.0

Overall

7.9

Entertainment

7.5

Boarding

8.1

Crew

8.6

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 Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Philadelphia to San Francisco Bay Area?

    If you book a flight to San Francisco Bay Area from Philadelphia, you will be flying from Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia.

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

    This flight path from Philadelphia to San Francisco Bay Area was viewed by 71 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    A quick flight from Philadelphia to San Francisco Bay Area can take about 8h 40m. Southwest provides one of the quickest options available for as low as $251. There are 2496 mi between Philadelphia and San Francisco Bay Area. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as $73 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $76 and American Airlines from $108 one-way.

  • What are the most popular routes from Philadelphia to San Francisco Bay Area?

    The most popular flight routes from Philadelphia to San Francisco Bay Area are Philadelphia - San Francisco, Philadelphia - San Jose and Philadelphia - Oakland.

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

    No one likes to see their flight delayed. When booking a flight from Philadelphia to San Francisco Bay Area consider choosing China Southern (91%), Qatar Airways (90%) or Fiji Airways (89%) 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 Bay Area?

    While on average a flight from Philadelphia to San Francisco Bay Area is generally $1,103, our data shows the cheapest flight currently is $168. When looking at the most popular route, (Philadelphia - San Francisco), you can expect to pay $183 for that flight.

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

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

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

    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 Bay Area.

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

    Yes. Cheapflights offers flight deals from Philadelphia to San Francisco Bay Area 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 Bay Area?

    Currently, February is the cheapest month in which you can book a flight from Philadelphia to San Francisco Bay Area (average of $71). Flying from Philadelphia to San Francisco Bay Area in July is currently the most expensive (average of $179). 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

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Alternative routes for Philadelphia to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Philadelphia to San Francisco Bay Area

Discover the top 8 airlines that operate flights from Philadelphia to San Francisco Bay Area. 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 December 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$125Average$313FlexibilityNo cancel feeOn-time65%
FrontierCheapest$137Average$279FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$179Average$431FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$216Average$470FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$246Average$282FlexibilityNo cancel feeOn-time62%
DeltaCheapest$276Average$351FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$276Average$418FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$298Average$392FlexibilityNo cancel feeOn-time83%

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