What is the cheapest airline that flies from Philadelphia to San Francisco?

United Airlines, Frontier, and Delta are the most popular carriers operating from Philadelphia to San Francisco

How many flights depart from Philadelphia to San Francisco on average per day?

As of January 2026, 7 flights take off from Philadelphia and land in San Francisco each day. The most common flight departure time for this route is 8:00AM, with 55% of daily flights taking off at noon.

What airlines fly to San Francisco?

United Airlines, American Airlines and Alaska Airlines are the top three most popular airlines that fly to San Francisco from Philadelphia according to our data. United Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 10 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Philadelphia and San Francisco?

Atlanta (ATL) was the most common stop: 69% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Philadelphia to San Francisco?

Flights via Boston (BOS) offer the lowest average round-trip price of $246.

How many flights depart from Philadelphia to San Francisco on average per week?

The number of flights available between Philadelphia and San Francisco is 55 per week as of January 2026. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.

Which layover airport has the shortest travel time from Philadelphia to San Francisco?

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 8h 07m.

Which layover airport has the shortest connection time from Philadelphia to San Francisco?

Las Vegas (LAS) has the shortest average layover time for this route: 1h 09m.

When did momondo last update prices for flights from Philadelphia Airport to San Francisco Airport?

Prices for flights from Philadelphia Airport to San Francisco Airport refresh daily.

How many operators does momondo search for flights from Philadelphia Airport to San Francisco Airport?

The number of operators available for flights from Philadelphia Airport to San Francisco Airport is 6 as of January 2026.

How old do you have to be to fly from Philadelphia Airport to San Francisco Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$158 Cheap Flights from Philadelphia to San Francisco in 2026

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Find the cheapest flights from Philadelphia to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:35 am - 12:03 pm

PHL

SFO

6h 28mnonstop

11:05 pm - 7:15 am

SFO

PHL

5h 10mnonstop

$289United Airlines

Wed, Feb 11 - Mon, Feb 16

7:09 pm - 10:41 pm

PHL

SFO

6h 32mnonstop

6:21 am - 2:40 pm

SFO

PHL

5h 19mnonstop

$290American Airlines

Fri, Feb 27 - Fri, Mar 6

7:50 pm - 9:39 pm

PHL

SFO

28h 49m

2 stops

10:46 pm - 11:18 am

SFO

PHL

9h 32m

1 stop

$291Frontier

Thu, Feb 12 - Sun, Feb 22

5:42 pm - 8:03 am

PHL

SFO

17h 21m

1 stop

10:58 pm - 10:27 am

SFO

PHL

8h 29m

1 stop

$292Frontier

Thu, Feb 12 - Mon, Feb 16

5:30 am - 9:39 pm

PHL

SFO

19h 09m

1 stop

6:15 am - 12:17 am

SFO

PHL

15h 02m

2 stops

$293Frontier

Thu, Feb 12 - Sat, Feb 21

12:15 pm - 11:29 pm

PHL

SFO

14h 14m

1 stop

10:34 pm - 11:13 am

SFO

PHL

9h 39m

1 stop

$294Multiple Airlines

Mon, Feb 2 - Fri, Feb 27

8:36 pm - 7:53 am

PHL

SFO

14h 17m

1 stop

4:07 pm - 5:31 am

SFO

PHL

10h 24m

1 stop

$295Frontier

Sun, Apr 5 - Sun, Apr 12

4:51 pm - 12:58 am

PHL

SFO

11h 07m

1 stop

8:00 am - 10:47 pm

SFO

PHL

11h 47m

1 stop

$296JetBlue

Thu, Apr 9 - Tue, Apr 21

5:05 am - 7:20 pm

PHL

SFO

17h 15m

1 stop

6:00 am - 5:31 am

SFO

PHL

20h 31m

1 stop

$297Frontier

Sat, Mar 7 - Thu, Mar 12

7:10 pm - 7:14 pm

PHL

SFO

27h 04m

1 stop

8:09 pm - 1:21 am

SFO

PHL

26h 12m

2 stops

$298Frontier

Tue, Mar 17 - Sat, Mar 21

Alaska Airlines flights from Philadelphia to San Francisco

Our best Alaska Airlines deals on Philadelphia to San Francisco flight tickets

Alaska Airlines

Apr 22

PHL7:22 amPhiladelphia

9h 59m

1 stop

SFO2:21 pmSan Francisco

Apr 26

SFO7:00 amSan Francisco

20h 02m

1 stop

PHL6:02 amPhiladelphia

$289

Alaska Airlines

Jan 26

PHL7:06 pmPhiladelphia

18h 36m

1 stop

SFO10:42 amSan Francisco

Feb 2

SFO2:30 pmSan Francisco

24h 33m

1 stop

PHL6:03 pmPhiladelphia

$309

Alaska Airlines

Apr 22

PHL7:22 amPhiladelphia

9h 59m

1 stop

SFO2:21 pmSan Francisco

Apr 28

SFO9:20 amSan Francisco

17h 42m

2 stops

PHL6:02 amPhiladelphia

$331

JetBlue flights from Philadelphia to San Francisco

Our best JetBlue deals on Philadelphia to San Francisco flight tickets

JetBlue

Apr 9

PHL4:51 pmPhiladelphia

11h 07m

1 stop

SFO12:58 amSan Francisco

Apr 21

SFO8:00 amSan Francisco

11h 47m

1 stop

PHL10:47 pmPhiladelphia

$296

JetBlue

Feb 2

PHL12:15 pmPhiladelphia

25h 15m

1 stop

SFO10:30 amSan Francisco

Feb 7

SFO8:00 amSan Francisco

12h 09m

1 stop

PHL11:09 pmPhiladelphia

$302

JetBlue

Feb 3

PHL8:40 amPhiladelphia

13h 15m

1 stop

SFO6:55 pmSan Francisco

Feb 7

SFO12:20 pmSan Francisco

21h 15m

1 stop

PHL12:35 pmPhiladelphia

$315

momondo Fare Finder

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

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 2/11

8:35 am-12:03 pm

Nonstop6h 28m

San Francisco

Mon 2/16

11:05 pm-7:15 am

Nonstop5h 10m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 2/27

7:09 pm-10:41 pm

Nonstop6h 32m

San Francisco

Fri 3/6

6:21 am-2:40 pm

Nonstop5h 19m

$290

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 2/12

7:50 pm-9:39 pm

2 stops28h 49m

San Francisco

Sun 2/22

10:46 pm-11:18 am

1 stop9h 32m

$291

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 2/12

5:42 pm-8:03 am

1 stop17h 21m

San Francisco

Mon 2/16

10:58 pm-10:27 am

1 stop8h 29m

$292

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 2/12

5:30 am-9:39 pm

1 stop19h 09m

San Francisco

Sat 2/21

6:15 am-12:17 am

2 stops15h 02m

$293

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Mon 2/2

12:15 pm-11:29 pm

1 stop14h 14m

San Francisco

Fri 2/27

10:34 pm-11:13 am

1 stop9h 39m

$294

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sun 4/5

8:36 pm-7:53 am

1 stop14h 17m

San Francisco

Sun 4/12

4:07 pm-5:31 am

1 stop10h 24m

$295

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 4/9

4:51 pm-12:58 am

1 stop11h 07m

San Francisco

Tue 4/21

8:00 am-10:47 pm

1 stop11h 47m

$296

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 3/7

5:05 am-7:20 pm

1 stop17h 15m

San Francisco

Thu 3/12

6:00 am-5:31 am

1 stop20h 31m

$297

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Tue 3/17

7:10 pm-7:14 pm

1 stop27h 04m

San Francisco

Sat 3/21

8:09 pm-1:21 am

2 stops26h 12m

$298

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Philadelphia to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $359.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Philadelphia to San Francisco is on a Wednesday when prices can be found for as low as $416. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $634.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Philadelphia to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $373. Flights in the afternoon are often more expensive with an average ticket price of $478.

What is the cheapest Philadelphia to San Francisco flight route?

Fly from Philadelphia to San Francisco for the best Philadelphia - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $394 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Philadelphia for as low as $337 on momondo.

What cabin class options are available on Philadelphia to San Francisco flights?

There are 4 cabin classes available to choose from on Philadelphia to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to San Francisco flights?

No. A direct flight is the cheapest option for a flight between Philadelphia to San Francisco.

How have Philadelphia to San Francisco flight prices changed over time?

As of January 2026, prices for Philadelphia to San Francisco flights are approximately 18% cheaper when compared to flights at the same time last year.

When to book flights from Philadelphia to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Philadelphia to San Francisco (PHL to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to San Francisco

Best Price Found	$273
Fastest flight time	6h 18m
Direct flights	Every day
Airports in San Francisco	1 airport

The best one-way flight to San Francisco from Philadelphia in the past 72 hours is $273. The best round-trip flight deal from Philadelphia to San Francisco found on momondo in the last 72 hours is $392.

The fastest flight from Philadelphia to San Francisco takes 6h 18m

Direct flights go from Philadelphia to San Francisco every day.

There is 1 airport in San Francisco. From Philadelphia there are direct flights to San Francisco (SFO).

Search flight deals

How far is Philadelphia to San Francisco by plane?
A flight from Philadelphia to San Francisco will travel around 2514.9 mi. 6h 18m is a normal flight duration for this route.
When did momondo last update prices for flights from Philadelphia Airport to San Francisco Airport?
Prices for flights from Philadelphia Airport to San Francisco Airport refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to San Francisco Airport?
The number of operators available for flights from Philadelphia Airport to San Francisco Airport is 6 as of January 2026.
How old do you have to be to fly from Philadelphia Airport to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Philadelphia to San Francisco?
Based on momondo bookings for flights between Philadelphia and San Francisco, the leading plane model is Boeing 737 MAX 8, making up 71.72% of the total bookings. Other popular models include Airbus A320-100/200 with 5.08%, Boeing 737 MAX 9 with 4.17%, and Boeing 737-800 with 3.34%.
What is the most popular airline from Philadelphia to San Francisco?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Philadelphia to San Francisco is American Airlines (69% of total bookings). The next most popular airlines are United Airlines (23%), Frontier (4%), and Delta (2%).

Best airlines flying from Philadelphia to San Francisco

Compare and see reviews for airlines that fly from Philadelphia to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $136	Free Cancellation	Rating 7.2 2,887 reviews	Search JetBlue flights
Frontier	PriceFrom $137	Free Cancellation	Rating 5.7 3,057 reviews	Search Frontier flights
Southwest	PriceFrom $179	Free Cancellation	Rating 8.0 4,258 reviews	Search Southwest flights
Delta	PriceFrom $276	Free Cancellation	Rating 7.9 8,051 reviews	Search Delta flights
American Airlines	PriceFrom $279	Free Cancellation	Rating 7.2 11,136 reviews	Search American Airlines flights
United Airlines	PriceFrom $289	Free Cancellation	Rating 7.4 9,164 reviews	Search United Airlines flights

United Airlines Flights From Philadelphia to San Francisco
United Airlines operates around 5 flights from Philadelphia to San Francisco every week. The average price of these flights found in the last 72 hours has been $404, but momondo users have found United Airlines deals from Philadelphia to San Francisco from as low as $289 round-trip. United Airlines has been scored 7.4/10 in 9,164 reviews.
American Airlines Flights From Philadelphia to San Francisco
Across 11,135 American Airlines reviews on momondo, the average score is 7.2/10. American Airlines flies from Philadelphia to San Francisco about 12 times each week, with ticket deals ranging from $279 to $395. Price data is based on momondo searches in the last 72 hours.

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Turlock

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to San Francisco?

Finding the right flight to San Francisco from Philadelphia is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Francisco quick and easy, saving you time and money.

Can I find flights from Philadelphia to San Francisco with flexible booking policies on momondo?

Flights from Philadelphia to San Francisco with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Philadelphia to San Francisco?

Once all potential Philadelphia to San Francisco flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Philadelphia to San Francisco right now. Can momondo alert me if prices change?

Price alerts on flights to San Francisco from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Philadelphia to San Francisco from $158

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to San Francisco departing on 3/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Find the cheapest flights from Philadelphia to San Francisco

Cheap round-trip flights

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Alaska Airlines flights from Philadelphia to San Francisco

Our best Alaska Airlines deals on Philadelphia to San Francisco flight tickets

JetBlue flights from Philadelphia to San Francisco

Our best JetBlue deals on Philadelphia to San Francisco flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Philadelphia to San Francisco that are best for you.

See travel insights to San Francisco from

How to get the cheapest flight ticket from Philadelphia to San Francisco

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $359.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Philadelphia to San Francisco is on a Wednesday when prices can be found for as low as $416. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $634.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Philadelphia to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $373. Flights in the afternoon are often more expensive with an average ticket price of $478.

What is the cheapest Philadelphia to San Francisco flight route?

Fly from Philadelphia to San Francisco for the best Philadelphia - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

What cabin class options are available on Philadelphia to San Francisco flights?

There are 4 cabin classes available to choose from on Philadelphia to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Philadelphia to San Francisco flights?

No. A direct flight is the cheapest option for a flight between Philadelphia to San Francisco.

How have Philadelphia to San Francisco flight prices changed over time?

As of January 2026, prices for Philadelphia to San Francisco flights are approximately 18% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Philadelphia to San Francisco?

United Airlines, Frontier, and Delta are the most popular carriers operating from Philadelphia to San Francisco

What airlines fly to San Francisco?

Which airport is the most popular layover for flights between Philadelphia and San Francisco?

Atlanta (ATL) was the most common stop: 69% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Philadelphia to San Francisco?

Flights via Boston (BOS) offer the lowest average round-trip price of $246.

Which layover airport has the shortest travel time from Philadelphia to San Francisco?

Flights connecting via Las Vegas (LAS) have the shortest average one-way travel time: 8h 07m.

Which layover airport has the shortest connection time from Philadelphia to San Francisco?

Las Vegas (LAS) has the shortest average layover time for this route: 1h 09m.

How many flights depart from Philadelphia to San Francisco on average per day?

As of January 2026, 7 flights take off from Philadelphia and land in San Francisco each day. The most common flight departure time for this route is 8:00AM, with 55% of daily flights taking off at noon.

How many flights depart from Philadelphia to San Francisco on average per week?

The number of flights available between Philadelphia and San Francisco is 55 per week as of January 2026. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.

When to book flights from Philadelphia to San Francisco

Cheap Philadelphia to San Francisco (PHL to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to San Francisco

Best Price Found

Fastest flight time

Direct flights

Airports in San Francisco

How far is Philadelphia to San Francisco by plane?

When did momondo last update prices for flights from Philadelphia Airport to San Francisco Airport?

How many operators does momondo search for flights from Philadelphia Airport to San Francisco Airport?

How old do you have to be to fly from Philadelphia Airport to San Francisco Airport?

What documentation or ID do you need to fly to San Francisco Airport?

What is the most popular plane model from Philadelphia to San Francisco?

What is the most popular airline from Philadelphia to San Francisco?

Best airlines flying from Philadelphia to San Francisco

Compare and see reviews for airlines that fly from Philadelphia to San Francisco with momondo

United Airlines Flights From Philadelphia to San Francisco

American Airlines Flights From Philadelphia to San Francisco

Traveling to a place near San Francisco?

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to San Francisco?

Can I find flights from Philadelphia to San Francisco with flexible booking policies on momondo?

How can momondo help me find flights from Philadelphia to San Francisco?

I’m not ready to book a flight from Philadelphia to San Francisco right now. Can momondo alert me if prices change?

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down