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$159+ Cheap flights from Philadelphia (PHL) to Fremont, CA

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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Fremont 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 Fremont

Keep the following information in mind while searching for Philadelphia to Fremont flight deals. Data was last updated November 2, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$289
(United Airlines)

One-way from

$159
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$435
Provider with most accurate pricing for Philadelphia-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-San Francisco flights.
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From Philadelphia to Fremont
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One-way flight from Philadelphia to Fremont
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Highest demand for flights based on searches. 6% potential increase in price ($25 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 November 2025
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Find flight deals from Philadelphia to Fremont

Cheapest flights from Philadelphia to Fremont
Explore the most affordable flight options available from Philadelphia to Fremont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 2, 2025.

This United Airlines deal was found by Cheapflights users on 11/1. 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.
Sat 12/136:15 amPHL - SFO
Nonstop6h 25mUnited Airlines
Mon 1/58:53 amSFO - PHL
Nonstop5h 29mUnited Airlines
Deal found 11/1$289
This Kiwi.com deal was found by Cheapflights users on 11/1. 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.
Sat 12/135:30 amPHL - SFO
1 stop19h 20mMultiple Airlines
Mon 1/59:30 pmSFO - PHL
2 stops48h 01mMultiple Airlines
Deal found 11/1$291
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 11/173:59 pmPHL - SFO
2 stops27h 44mFrontier
Wed 11/198:02 amSFO - PHL
1 stop17h 47mFrontier
Deal found 11/1$292
This United Airlines deal was found by Cheapflights users on 10/31. 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.
Sun 11/238:15 amPHL - SFO
1 stop9h 36mUnited Airlines
Sat 12/611:15 amSFO - PHL
Nonstop5h 26mUnited Airlines
Deal found 10/31$295
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Sun 11/2310:00 amPHL - SFO
1 stop15h 55mMultiple Airlines
Thu 1/84:07 pmSFO - PHL
2 stops14h 30mMultiple Airlines
Deal found 10/30$296
This Kiwi.com deal was found by Cheapflights users on 10/31. 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.
Fri 11/146:19 amPHL - SFO
1 stop11h 21mFrontier
Wed 11/198:55 pmSFO - PHL
2 stops35h 52mFrontier
Deal found 10/31$297
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Sat 12/138:05 pmPHL - SFO
1 stop8h 10mUnited Airlines
Tue 12/1611:15 amSFO - PHL
Nonstop5h 26mUnited Airlines
Deal found 10/30$299
This Frontier deal was found by Cheapflights users on 10/30. 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 11/78:00 amPHL - SFO
1 stop10h 07mFrontier
Mon 11/1010:23 pmSFO - PHL
1 stop14h 27mFrontier
Deal found 10/30$302
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 11/2712:52 pmPHL - SFO
1 stop9h 31mFrontier
Thu 1/84:07 pmSFO - PHL
2 stops14h 30mFrontier
Deal found 10/30$303
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Sun 11/238:15 amPHL - SFO
1 stop9h 36mUnited Airlines
Thu 11/276:45 amSFO - PHL
1 stop8h 33mUnited Airlines
Deal found 11/1$304
This CheapOair deal was found by Cheapflights users on 11/1. 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.
Sat 11/157:00 amPHL - SFO
1 stop19h 31mJetBlue
Tue 11/188:00 amSFO - PHL
1 stop11h 55mJetBlue
Deal found 11/1$305
This Frontier deal was found by Cheapflights users on 10/31. 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 12/187:10 amPHL - SFO
1 stop8h 24mFrontier
Thu 12/254:07 pmSFO - PHL
1 stop10h 24mFrontier
Deal found 10/31$306

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Fremont 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 November 2, 2025.
Use the filters below to find and compare flights from Philadelphia to Fremont that are best for you.

Fly from

Philadelphia

Fly to

Fremont

Route

Depart

Return

Price

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Mon 12/15

6:15 am-9:40 am

Nonstop6h 25m

San Francisco

Thu 1/1

8:47 pm-5:11 am

Nonstop5h 24m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 11/22

6:25 pm-9:50 pm

Nonstop6h 25m

San Francisco

Sun 11/23

11:44 pm-10:24 am

1 stop7h 40m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 12/10

6:15 am-9:40 am

Nonstop6h 25m

San Francisco

Sat 12/13

10:45 pm-9:35 am

1 stop7h 50m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 12/13

5:07 pm-10:37 pm

1 stop8h 30m

San Francisco

Mon 1/5

10:40 pm-7:04 am

Nonstop5h 24m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Mon 11/24

8:00 pm-1:15 am

1 stop8h 15m

San Francisco

Sun 1/4

10:40 pm-7:04 am

Nonstop5h 24m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 1/15

8:35 am-12:03 pm

Nonstop6h 28m

San Francisco

Tue 1/20

5:00 am-3:50 pm

1 stop7h 50m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 12/6

7:06 am-3:46 pm

1 stop11h 40m

San Francisco

Fri 12/12

6:20 pm-5:46 am

1 stop8h 26m

$308

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 11/27

6:14 am-11:17 am

1 stop8h 03m

San Francisco

Wed 12/3

11:56 am-11:57 pm

1 stop9h 01m

$309

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 1/31

12:16 pm-5:43 pm

1 stop8h 27m

San Francisco

Tue 2/3

10:54 pm-8:52 am

1 stop6h 58m

$309

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 3/12

3:15 pm-11:00 pm

1 stop10h 45m

San Francisco

Mon 3/16

7:00 pm-5:39 am

1 stop7h 39m

$309

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 21 results
1
2
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Best time to book a flight from Philadelphia to Fremont

Have a flexible travel schedule? Discover the best time to fly to Fremont 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 Fremont

How far ahead should I book a flight from Philadelphia to Fremont?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Fremont. Price data was last updated on October 31, 2025.

Booking 70 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to Fremont. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Philadelphia to Fremont?

Currently, February is the cheapest month in which you can book a flight from Philadelphia to Fremont (average of $71). Flying from Philadelphia to Fremont in May is currently the most expensive (average of $187). 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 FR8?

Find hourly flight availability from Philadelphia to Fremont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 2, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 27% on flights from Philadelphia to Fremont by exploring options for tickets at noon.

What is the cheapest day to fly from Philadelphia to Fremont?

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

Travelers seeking maximum savings on their Philadelphia to Fremont 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.

Reviews of airlines servicing Fremont

Get insights into the airlines that provide service to Fremont. 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 Fremont. Reviews last updated November 2, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Philadelphia to Fremont have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

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
8.0
Very good
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

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
8,001 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

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
8,997 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

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
11,034 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

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
3,118 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

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 Fremont. 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 Fremont?

    Located just 7.0 mi from the city center, Philadelphia is the airport most travelers will use when flying to Fremont from Philadelphia. Booking flights from Philadelphia (PHL) to Fremont should be relatively easy as there are 3 daily outbound flights to Fremont from 7 different airlines.

  • How popular is this Philadelphia to Fremont flight route?

    Within the past month, 31 users have taken a look at flights from Philadelphia to Fremont.

  • How long is the flight from Philadelphia to Fremont?

    A quick flight from Philadelphia to Fremont can take about 6h 25m. United Airlines provides one of the quickest options available for as low as $289. Airlines will cover a distance of 2513 mi. All flights are typically nonstop.

  • What are the most reliable airlines from Philadelphia to Fremont?

    No one likes to see their flight delayed. When booking a flight from Philadelphia to Fremont consider choosing Air China (94%), ANA (89%) or British Airways (86%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Philadelphia to Fremont?

    On average you can expect to pay $1,221 for a flight from Philadelphia to Fremont. The cheapest flight overall is $158 while the most popular route, (Philadelphia - San Francisco) is currently priced at $209.

  • Can I find deals for flights from Philadelphia to Fremont that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Fremont flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Fremont?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Philadelphia to Fremont.

  • Can I find deals for business class flights from Philadelphia to Fremont?

    Yes. Cheapflights offers flight deals from Philadelphia to Fremont 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 Fremont?

    Currently, February is the cheapest month in which you can book a flight from Philadelphia to Fremont (average of $71). Flying from Philadelphia to Fremont in May is currently the most expensive (average of $187). 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.

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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 Fremont

Discover the top 7 airlines that operate flights from Philadelphia to Fremont. 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 November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$125Average$291FlexibilityNo cancel feeOn-time65%
FrontierCheapest$137Average$265FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$179Average$436FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$216Average$365FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$225Average$282FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$247Average$402FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$347FlexibilityNo cancel feeOn-timeN/A

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