$134 Cheap Flights from Philadelphia (PHL) to San Francisco (SFO)

View $134 flight on Tue, Jan 6, 2026Opens in a new window

Popular airlines from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO)

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Cheap Flights from Philadelphia to San Francisco (PHL-SFO)

Prices were available within the past 7 days and start at $134 for one-way flights and $207 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Sep 30 - Wed, Oct 22
PHL
Philadelphia
SFO
San Francisco
$207 Roundtrip, found 2 days ago
$207
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Tue, Sep 30 from Philadelphia to San Francisco, returning Wed, Oct 22, priced at $207 found 2 days ago
American Airlines
Sat, Nov 8 - Tue, Nov 18
PHL
Philadelphia
SFO
San Francisco
$211 Roundtrip, found 2 days ago
$211
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Nov 8 from Philadelphia to San Francisco, returning Tue, Nov 18, priced at $211 found 2 days ago
American Airlines
Tue, Nov 11 - Mon, Nov 17
PHL
Philadelphia
SFO
San Francisco
$218 Roundtrip, found 2 days ago
$218
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Nov 11 from Philadelphia to San Francisco, returning Mon, Nov 17, priced at $218 found 2 days ago
Southwest Airlines
Thu, Nov 20 - Thu, Nov 27
PHL
Philadelphia
SFO
San Francisco
$219 Roundtrip, found 2 days ago
$219
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Thu, Nov 20 from Philadelphia to San Francisco, returning Thu, Nov 27, priced at $219 found 2 days ago
Frontier Airlines
Fri, Aug 22 - Sat, Aug 23
PHL
Philadelphia
SFO
San Francisco
$237 Roundtrip, found 1 hour ago
$237
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Aug 22 from Philadelphia to San Francisco, returning Sat, Aug 23, priced at $237 found 1 hour ago
Frontier Airlines
Fri, Sep 12 - Sun, Sep 21
PHL
Philadelphia
SFO
San Francisco
$242 Roundtrip, found 8 hours ago
$242
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Fri, Sep 12 from Philadelphia to San Francisco, returning Sun, Sep 21, priced at $242 found 8 hours ago
JetBlue Airways
Wed, Sep 10 - Sun, Sep 14
PHL
Philadelphia
SFO
San Francisco
$247 Roundtrip, just found
$247
Roundtrip
just found
Select JetBlue Airways flight, departing Wed, Sep 10 from Philadelphia to San Francisco, returning Sun, Sep 14, priced at $247 just found
Frontier Airlines
Mon, Aug 25 - Thu, Sep 4
PHL
Philadelphia
SFO
San Francisco
$251 Roundtrip, found 6 hours ago
$251
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Mon, Aug 25 from Philadelphia to San Francisco, returning Thu, Sep 4, priced at $251 found 6 hours ago
Frontier Airlines
Thu, Aug 21 - Fri, Aug 22
PHL
Philadelphia
SFO
San Francisco
$252 Roundtrip, found 1 hour ago
$252
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Aug 21 from Philadelphia to San Francisco, returning Fri, Aug 22, priced at $252 found 1 hour ago
United
Thu, Aug 7 - Sat, Aug 9
PHL
Philadelphia
SFO
San Francisco
$289 Roundtrip, just found
$289
Roundtrip
just found
Select United flight, departing Thu, Aug 7 from Philadelphia to San Francisco, returning Sat, Aug 9, priced at $289 just found

Find the cheapest month to fly from Philadelphia (PHL) to San Francisco (SFO)

May is typically the cheapest month to fly

From $140 - $333 per traveler.

Graph displaying average flight prices per month

Flights from Philadelphia (PHL) to San Francisco (SFO)
Origin airport
Philadelphia Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$207
Distance
2515 mi
Average flight time
3 hours 40 mins

Philadelphia to San Francisco Flights

The cheapest times to fly from Philadelphia to San Francisco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Philadelphia to San Francisco are during the month of September. You can find some of the cheapest flights from Philadelphia to San Francisco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Philadelphia to San Francisco

Sunday is one of the best days to book for cheap flights from Philadelphia to San Francisco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Philadelphia to San Francisco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Philadelphia to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $134 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Philadelphia to San Francisco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Philadelphia to San Francisco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO) cost?
You can pick up cheap return fares starting from $257 from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a American Airlines flight leaving PHL on July 29 2025 and touching down at SFO. The price was last updated on July 12 2025 and has not changed since.
What is the cheapest month to fly from PHL to SFO?
The cheapest flights from PHL to SFO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO)?
You can travel nonstop from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO) on an American Airlines flight.
What is the cheapest airline that flies from PHL to SFO?
Right now, the cheapest carrier operating one-way flights from PHL to SFO is American Airlines. You can take off on this route from $129. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from PHL on August 30 2025. Prices were last updated on July 12 2025 and have not changed since.
How many flights per day from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO)?
With, on average, 3 nonstop flights departing from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO) each day, you'll be jetting off in no time.
What are the most popular departure times for flights from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO)?
More travelers fly between PHL and SFO at 6 PM than at any other time. Rather go when it's quieter? Travel outside of rush hours and you could save on your fare as well.
What day of the week has the most flights from PHL to SFO?
Friday has the most flights from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO). Consider jetting off on this day and you'll have the best chance of finding a departure that fits your plans.
What is the earliest flight from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO)?
Philadelphia Intl. Airport (PHL)'s earliest flight to San Francisco Intl. Airport (SFO) is at approximately 8:47AM UTC-5. With a total travel time of 6h 28m, you'll touch down at around 12:15PM UTC-8.
How long does it take to fly from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO)?
It usually takes 6 hours and 25 minutes to cover the 2,500 mi from PHL to SFO.
What airline has the least delays from PHL to SFO?
Alaska Airlines has the strongest track record for on-time direct flights from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO), with an on-time score of 90%. Use the Expedia App to see your flight schedule before you head off and get real-time updates about any trip changes.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO)?
Select a flight from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO) that leaves before 3 PM to reduce the risk of cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Francisco from Philadelphia Intl. Airport (PHL)?
If you're traveling on a direct flight from Philadelphia Intl. Airport (PHL) to San Francisco, San Francisco Intl. Airport (SFO) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO) last-minute?
Waiting until just before your trip to book your flight from PHL to SFO generally means paying more. While it's possible to find some last-minute offers, there's no guarantee. Allow some flexibility in your schedule for the best chance of landing a bargain.
Is it cheaper to book a PHL to SFO flight and hotel package?
Compared with arranging flights and hotels separately, booking a PHL to SFO flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one convenient place will take the stress out of planning your trip. Simply secure your flights and choose from our wide range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to San Francisco Intl. Airport (SFO)?
In most cases, you can modify or cancel your PHL to SFO flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you'd like further information, visit our Customer Service portal.

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