HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Fremont

$156+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SFO
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Fremont with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Philadelphia to Fremont are usually found in September or February, booked 70 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap 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 December 18, 2025.

This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:01 pmPHL - SFO
1 stop15h 46mFrontier
Sun 1/46:24 amSFO - PHL
1 stop20h 07mFrontier
Deal found 12/16$289
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:10 amPHL - SFO
1 stop11h 03mFrontier
Sun 1/46:24 amSFO - PHL
1 stop20h 07mFrontier
Deal found 12/16$303
This Trip.com 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 Trip.com 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
Thu 1/16:24 amSFO - PHL
1 stop20h 07mFrontier
Deal found 12/16$305
This Super.com 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 Super.com 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
Sun 1/1111:35 pmSFO - PHL
1 stop8h 38mFrontier
Deal found 12/16$317
This Frontier 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 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 1/24:06 pmSFO - PHL
1 stop10h 34mFrontier
Deal found 12/16$318
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:08 amPHL - SFO
1 stop9h 31mDelta
Thu 1/225:45 amSFO - PHL
1 stop7h 45mDelta
Deal found 12/17$331
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:36 pmPHL - SFO
1 stop30h 48mFrontier
Sat 1/36:24 amSFO - PHL
1 stop20h 07mFrontier
Deal found 12/16$334
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:10 amPHL - SFO
1 stop17h 26mFrontier
Thu 1/16:24 amSFO - PHL
1 stop20h 07mFrontier
Deal found 12/16$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 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.
Fri 12/265:10 amPHL - SFO
1 stop11h 03mMultiple Airlines
Thu 1/228:00 amSFO - PHL
1 stop12h 19mMultiple Airlines
Deal found 12/17$347

Find flight deals from Philadelphia to Fremont

Keep the following information in mind while searching for Philadelphia to Fremont flight deals. Data was last updated December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$289
(United Airlines)

One-way from

$156
(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 Fremont
Search Deals
One-way flight from Philadelphia to Fremont
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 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 December 18, 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

Sat 1/31

7:06 pm-10:42 am

1 stop18h 36m

San Francisco

Sat 2/7

6:18 pm-6:03 pm

1 stop20h 45m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Thu 1/15

8:35 am-12:03 pm

Nonstop6h 28m

San Francisco

Sun 1/18

1:25 pm-9:52 pm

Nonstop5h 27m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sun 3/1

8:35 am-12:06 pm

Nonstop6h 31m

San Francisco

Sun 3/8

11:05 pm-7:15 am

Nonstop5h 10m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 4/17

6:35 pm-10:31 am

1 stop18h 56m

San Francisco

Mon 4/20

5:45 pm-5:23 am

1 stop8h 38m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 2/20

6:20 pm-9:50 pm

Nonstop6h 30m

San Francisco

Thu 2/26

1:12 pm-9:33 pm

Nonstop5h 21m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 4/22

6:13 pm-9:31 pm

Nonstop6h 18m

San Francisco

Sun 4/26

11:05 pm-7:45 am

Nonstop5h 40m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 2/11

8:35 am-12:03 pm

Nonstop6h 28m

San Francisco

Wed 2/18

1:12 pm-9:33 pm

Nonstop5h 21m

$289

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Wed 3/4

10:06 am-5:40 pm

1 stop10h 34m

San Francisco

Wed 3/25

11:05 pm-7:15 am

Nonstop5h 10m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Sat 5/16

6:12 am-9:30 am

Nonstop6h 18m

San Francisco

Tue 5/19

10:45 pm-10:28 am

1 stop8h 43m

$299

PhiladelphiaSan Francisco

PHL - SFO

PHLSFO

Philadelphia

Fri 2/13

6:20 pm-9:50 pm

Nonstop6h 30m

San Francisco

Tue 2/17

11:59 pm-10:24 am

1 stop7h 25m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 22 results
1
2
3

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 December 12, 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 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 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 December 18, 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.

Weekly flight availability from Philadelphia to Fremont

Explore weekly flight availability from Philadelphia to Fremont. 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 18, 2025.

The most flights from PHL to FR8 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 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 December 18, 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
7.9
Good
4,250 reviews

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

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
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

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
8,005 reviews
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

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
9,091 reviews
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

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
11,054 reviews
Southwest
7.9
Good
4,250 reviews

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

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
4,250 reviews

Overall

7.9

Crew

8.6

Comfort

8.0

Entertainment

7.5

Food

7.0

Boarding

8.1

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 10 daily outbound flights to Fremont from 8 different airlines.

  • How popular is this Philadelphia to Fremont flight route?

    Within the past month, 71 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 28m. Alaska Airlines provides one of the quickest options available for as low as $289. Airlines will cover a distance of 2513 mi. This flight may include one or multiple stops.

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

    One-way options have recently been found by users for as low as $76 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $80 and JetBlue from $113 one-way.

  • 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 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 Fremont?

    On average you can expect to pay $1,103 for a flight from Philadelphia to Fremont. The cheapest flight overall is $168 while the most popular route, (Philadelphia - San Francisco) is currently priced at $178.

  • 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 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to Fremont

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
Newark to Los Angeles flights
Newark to Las Vegas flights
John F Kennedy Intl to San Francisco flights
LaGuardia to Los Angeles flights
Dulles Intl to Las Vegas flights
LaGuardia to Las Vegas flights
Reagan-National to Los Angeles flights
Newark to San Francisco flights
Dulles Intl to Los Angeles flights
Reagan-National to Las Vegas flights
Philadelphia to Las Vegas flights
John F Kennedy Intl to San Diego flights
LaGuardia to San Francisco flights
Dulles Intl to San Francisco flights
LaGuardia to Burbank flights
Reagan-National to San Francisco flights
Philadelphia to Los Angeles flights
Newark to San Diego flights
Newark to Ontario flights
John F Kennedy Intl to Ontario flights
Dulles Intl to San Diego flights
Philadelphia to San Francisco flights
Pittsburgh to Las Vegas flights
LaGuardia to San Diego flights
Newark to Santa Ana flights
Newark to Palm Springs flights
John F Kennedy Intl to Santa Ana flights
LaGuardia to Ontario flights
Reagan-National to Ontario flights
LaGuardia to Santa Ana flights
Dulles Intl to Ontario flights
Philadelphia to San Diego flights
Reagan-National to San Diego flights
John F Kennedy Intl to Palm Springs flights
Philadelphia to Ontario flights
John F Kennedy Intl to Reno flights
Dulles Intl to Palm Springs flights
LaGuardia to Palm Springs flights
Newark to Sacramento flights
Reagan-National to Santa Ana flights
Dulles Intl to Santa Ana flights
Dulles Intl to San Jose flights
Pittsburgh to Los Angeles flights
Newark to Reno flights
Dulles Intl to Sacramento flights
John F Kennedy Intl to Sacramento flights
John F Kennedy Intl to Burbank flights
John F Kennedy Intl to San Jose flights

Top 8 airlines flying from Philadelphia to Fremont

Discover the top 8 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 December 18, 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$366FlexibilityNo 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%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.