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Flights from Philadelphia to San Francisco from $289 - Compare and Save

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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to San Francisco are usually found in September or February, booked 87 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap 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 August 7, 2025.

Round-trip from

$289
(Southwest)

One-way from

$129
(Frontier)

Popular in

December

Cheapest in

September

Average price

$397

Good round-trip deal

$323 or less

Good one-way deal

$323 or less
From Philadelphia to San Francisco
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One-way flight from Philadelphia to San Francisco
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Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 7, 2025.

This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/296:40 pmPHL - SFO
1 stop7h 30mSouthwest
Sun 8/319:25 amSFO - PHL
1 stop11h 00mSouthwest
Deal found 8/4$289
This JetBlue deal was found by Cheapflights users on 8/5. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/25:00 amPHL - SFO
1 stop11h 04mJetBlue
Mon 11/39:16 pmSFO - PHL
1 stop8h 20mJetBlue
Deal found 8/5$290
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Tue 8/125:30 pmPHL - SFO
1 stop19h 55mFrontier
Mon 8/2510:29 pmSFO - PHL
1 stop11h 22mFrontier
Deal found 8/5$291
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/52:00 pmPHL - SFO
2 stops11h 25mSouthwest
Sat 9/65:15 amSFO - PHL
1 stop8h 25mSouthwest
Deal found 8/4$292
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/287:00 amPHL - SFO
1 stop8h 31mDelta
Wed 12/36:15 amSFO - PHL
1 stop8h 06mDelta
Deal found 8/5$293
This Kiwi.com deal was found by Cheapflights users on 8/5. 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.
Thu 8/216:25 amPHL - SFO
1 stop8h 04mFrontier
Fri 8/2210:29 pmSFO - PHL
1 stop10h 21mFrontier
Deal found 8/5$294
This American Airlines deal was found by Cheapflights users on 8/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/218:15 pmPHL - SFO
Nonstop6h 03mAmerican Airlines
Tue 8/266:10 amSFO - PHL
1 stop10h 51mAmerican Airlines
Deal found 8/6$295
This CheapOair deal was found by Cheapflights users on 8/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1110:29 pmPHL - SFO
1 stop14h 56mFrontier
Sun 8/178:53 pmSFO - PHL
1 stop15h 33mFrontier
Deal found 8/6$298
This United Airlines deal was found by Cheapflights users on 8/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:34 amPHL - SFO
Nonstop6h 01mUnited Airlines
Fri 10/312:43 amSFO - PHL
1 stop8h 12mUnited Airlines
Deal found 8/5$299
This Frontier deal was found by Cheapflights users on 8/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/186:45 amPHL - SFO
1 stop9h 32mFrontier
Thu 9/2511:00 pmSFO - PHL
1 stop8h 56mFrontier
Deal found 8/4$300
This Southwest deal was found by Cheapflights users on 8/4. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/44:25 pmPHL - SFO
2 stops9h 15mSouthwest
Wed 9/1012:20 pmSFO - PHL
1 stop7h 10mSouthwest
Deal found 8/4$301
This United Airlines deal was found by Cheapflights users on 8/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:27 pmPHL - SFO
1 stop7h 47mUnited Airlines
Fri 9/512:43 amSFO - PHL
1 stop8h 16mUnited Airlines
Deal found 8/4$303

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 August 7, 2025.
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 8/29

6:40 pm-11:10 pm

1 stop7h 30m

San Francisco

Sun 8/31

9:25 am-11:25 pm

1 stop11h 00m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sun 11/2

5:00 am-1:04 pm

1 stop11h 04m

San Francisco

Mon 11/3

9:16 pm-8:36 am

1 stop8h 20m

$290

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Tue 8/12

5:30 pm-10:25 am

1 stop19h 55m

San Francisco

Mon 8/25

10:29 pm-12:51 pm

1 stop11h 22m

$291

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 9/5

2:00 pm-10:25 pm

2 stops11h 25m

San Francisco

Sat 9/6

5:15 am-4:40 pm

1 stop8h 25m

$292

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 9/10

10:20 am-6:33 pm

1 stop11h 13m

San Francisco

Sat 9/13

8:40 am-9:50 pm

1 stop10h 10m

$293

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 8/21

6:25 am-11:29 am

1 stop8h 04m

San Francisco

Fri 8/22

10:29 pm-11:50 am

1 stop10h 21m

$294

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Tue 9/2

8:15 pm-11:18 pm

Nonstop6h 03m

San Francisco

Tue 9/9

6:00 am-7:55 pm

1 stop10h 55m

$295

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Mon 8/11

10:29 pm-10:25 am

1 stop14h 56m

San Francisco

Mon 8/25

10:29 pm-12:51 pm

1 stop11h 22m

$298

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 9/26

6:34 am-9:35 am

Nonstop6h 01m

San Francisco

Fri 10/3

12:43 am-11:55 am

1 stop8h 12m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 9/18

6:45 am-1:17 pm

1 stop9h 32m

San Francisco

Thu 9/25

11:00 pm-10:56 am

1 stop8h 56m

$300

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/4

Showing 1-10 of 22 results
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The best insider tips for Philadelphia to San Francisco flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to San Francisco trip
Airports
PHL

For efficient check-in, verify your airline’s terminal before arriving. Terminals are spread out, and only some are connected by indoor walkways.

Read more about PHLby Mark Chesnut
SFO

Use BART for budget-friendly travel from SFO to downtown San Francisco. The trip takes about 40 minutes and is the least expensive option.

Read more about SFOby Harriet Baskas
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut

Mark Chesnut

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.

Read more
Harriet Baskas

Harriet Baskas

Expert on SFO

Harriet Baskas

Harriet Baskas

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.

Read more

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 August 1, 2025.

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, January is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of $276). Flying from Philadelphia to San Francisco in June is currently the most expensive (average of $358). 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 August 7, 2025.

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 afternoon, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to San Francisco. Price data was last updated on August 3, 2025.

Travelers seeking maximum savings on their Philadelphia to San Francisco flight should consider departing on Wednesday at noon 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

Explore weekly flight availability from Philadelphia to San Francisco. 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 August 7, 2025.

The most flights from PHL to SFO are scheduled on a Wednesday (15 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (9 on average).

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 August 7, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Southwest
8.0
Very good
4,244 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Delta
8.0
Very good
7,985 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
United Airlines
7.4
Good
8,917 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Boarding

8.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)

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 7 different airlines have flights from Philadelphia (PHL) to San Francisco (SFO) on a regular basis. There are 12 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 56m.

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

    The Philadelphia to San Francisco flight path was viewed by 18 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Flying on Southwest is currently your cheapest option to San Francisco, with prices starting at $289. Additional round-trip tickets that might be worth considering are offered by JetBlue and Frontier, with the lowest prices starting at $290 and $291, respectively. These flights start at 26% lower than the current average price 3 months from now.

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

    $129 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on JetBlue and Frontier, with prices starting from $134 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 (94%), ANA (92%) or United Airlines (87%) 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 $1,032, our data indicates the cheapest price to be $273. The most popular route (Philadelphia - San Francisco), is priced around $206.

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

    The most popular layover on flights from Philadelphia to San Francisco is Denver. Atlanta is the second most popular location for layovers on flights from Philadelphia to San Francisco.

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

    Coors Field, 16th Street Mall, and Paramount Theatre are the most popular attractions in Denver if you're in need of something to do during your layover. Coors Field, 16th Street Mall and Paramount Theatre are located about 18.4 mi, 18.7 mi, and 18.6 mi, respectively from Denver Intl if you are interested in checking them out. Travelers can book a car rental at Denver Intl for about $70 per day to make their sightseeing more efficient.

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

    Georgia Aquarium, Fox Theatre, and Tabernacle are the most popular attractions in Atlanta if you're in need of something to do during your layover. Georgia Aquarium, Fox Theatre, and Tabernacle are located about 8.6 mi, 9.3 mi, and 8.3 mi, respectively from Atlanta Hartsfield-Jackson. Those landing in Atlanta looking to spend some time exploring during their layover can rent a car for about $57 per day.

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

    The least popular layover on flights from Philadelphia to San Francisco is Phoenix. Detroit sees the second fewest layovers for non-direct flights flying from Philadelphia to San Francisco.

  • 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, January is the cheapest month in which you can book a flight from Philadelphia to San Francisco (average of $276). Flying from Philadelphia to San Francisco in June is currently the most expensive (average of $358). 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
Roseville
Mountain View
Santa Cruz
Livermore
South San Francisco
Turlock
Hollister
Antioch
Watsonville
Manteca
Sunnyvale
Newark
Milpitas
Santa Clara
Campbell
Foster City
San Leandro
Burlingame
Redwood City
Vallejo

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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.
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Top 7 airlines flying from Philadelphia to San Francisco

Discover the top 7 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 August 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$122Average$203FlexibilityNo cancel feeOn-time65%
FrontierCheapest$135Average$225FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$136Average$269FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$248Average$457FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$260Average$398FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$359FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$281Average$424FlexibilityNo cancel feeOn-time69%

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