San Antonio

$72+ Cheap flights from Philadelphia to San Antonio (PHL - SAT)

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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAT
Aug 23 — Aug 301
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Cheapflights Tip: The best prices from Philadelphia to San Antonio are usually found in April or February, booked 61 days in advance, depart on a Saturday or Wednesday and return on a Wednesday

Cheap flight deals from Philadelphia to San Antonio

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to San Antonio (SAT). 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 18, 2025.

Round-trip from

$250
(FlightHub)

One-way from

$72
(Booking.com)

Popular in

June

Cheapest in

April

Average price

$432

Good round-trip deal

$447 or less

Good one-way deal

$275 or less
From Philadelphia to San Antonio
One-way flight from Philadelphia to San Antonio
Highest demand for flights based on searches. 8% potential increase in price ($42 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from Philadelphia to San Antonio.
Price to beat on a one-way flight from Philadelphia to San Antonio.

Find flight deals from Philadelphia to San Antonio

Cheapest flights from Philadelphia to San Antonio
Explore the most affordable flight options available from Philadelphia to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This FlightHub deal was found by Cheapflights users on 8/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:08 pmPHL - SAT
1 stop22h 22mMultiple Airlines
Sun 9/147:17 pmSAT - PHL
2 stops16h 45mMultiple Airlines
Deal found 8/16$250
This FlightHub deal was found by Cheapflights users on 8/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/308:41 pmPHL - SAT
2 stops20h 04mSpirit Airlines
Mon 10/277:19 pmSAT - PHL
2 stops16h 34mSpirit Airlines
Deal found 8/16$251
This Frontier deal was found by Cheapflights users on 8/16. 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 9/136:45 amPHL - SAT
1 stop8h 42mFrontier
Sat 9/204:45 pmSAT - PHL
2 stops22h 47mFrontier
Deal found 8/16$252
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 9/28:02 pmPHL - SAT
2 stops39h 46mFrontier
Fri 9/55:40 pmSAT - PHL
1 stop6h 17mFrontier
Deal found 8/18$253
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1110:03 pmPHL - SAT
1 stop19h 27mMultiple Airlines
Tue 9/169:47 pmSAT - PHL
1 stop22h 04mMultiple Airlines
Deal found 8/17$254
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/139:50 pmPHL - SAT
1 stop21h 22mSpirit Airlines
Tue 9/169:47 pmSAT - PHL
1 stop22h 04mSpirit Airlines
Deal found 8/16$256
This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/32:21 pmPHL - SAT
1 stop21h 27mMultiple Airlines
Fri 9/57:17 pmSAT - PHL
2 stops16h 45mMultiple Airlines
Deal found 8/17$257
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 9/185:15 pmPHL - SAT
1 stop19h 25mMultiple Airlines
Sat 9/203:22 pmSAT - PHL
2 stops18h 34mMultiple Airlines
Deal found 8/15$259
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:42 amPHL - SAT
1 stop10h 55mFrontier
Sun 10/268:26 pmSAT - PHL
2 stops13h 24mFrontier
Deal found 8/17$261
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:05 pmPHL - SAT
2 stops21h 50mMultiple Airlines
Mon 10/207:10 pmSAT - PHL
1 stop18h 07mMultiple Airlines
Deal found 8/16$262
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/122:07 pmPHL - SAT
2 stops25h 20mMultiple Airlines
Tue 9/169:47 pmSAT - PHL
1 stop22h 04mMultiple Airlines
Deal found 8/16$263
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:40 amPHL - SAT
2 stops11h 35mFrontier
Thu 10/308:43 pmSAT - PHL
2 stops13h 09mFrontier
Deal found 8/17$266

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to San Antonio 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 18, 2025.
Use the filters below to find and compare flights from Philadelphia to San Antonio that are best for you.

Fly from

Philadelphia

Fly to

San Antonio

Route

Depart

Return

Price

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sun 9/7

7:08 pm-4:30 pm

1 stop22h 22m

San Antonio

Sun 9/14

7:17 pm-1:02 pm

2 stops16h 45m

$250

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 9/5

10:16 pm-2:27 pm

2 stops17h 11m

San Antonio

Sat 11/15

6:05 pm-10:52 am

2 stops15h 47m

$250

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 9/12

5:15 am-4:30 pm

1 stop12h 15m

San Antonio

Tue 9/16

9:47 pm-8:51 pm

1 stop22h 04m

$250

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 8/30

8:41 pm-3:45 pm

2 stops20h 04m

San Antonio

Mon 10/27

7:19 pm-12:53 pm

2 stops16h 34m

$251

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 9/13

6:45 am-2:27 pm

1 stop8h 42m

San Antonio

Sat 9/20

4:45 pm-4:32 pm

2 stops22h 47m

$252

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 9/18

5:15 am-1:49 pm

2 stops9h 34m

San Antonio

Mon 9/22

5:40 pm-12:57 am

1 stop6h 17m

$253

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 10/16

6:42 am-7:41 pm

1 stop13h 59m

San Antonio

Sun 10/19

5:45 pm-7:30 am

2 stops12h 45m

$253

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 9/3

2:21 pm-10:48 am

1 stop21h 27m

San Antonio

Sun 9/7

7:17 pm-1:02 pm

2 stops16h 45m

$253

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 9/2

8:02 pm-10:48 am

2 stops39h 46m

San Antonio

Fri 9/5

5:40 pm-12:57 am

1 stop6h 17m

$253

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sun 10/26

10:54 am-6:13 pm

1 stop8h 19m

San Antonio

Mon 10/27

7:10 pm-2:17 pm

1 stop18h 07m

$254

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Philadelphia to San Antonio

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

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

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to San Antonio. Price data was last updated on August 8, 2025.

The best time to book flights from Philadelphia to San Antonio is 61 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Philadelphia to San Antonio (average of $295). Flying from Philadelphia to San Antonio in March is currently the most expensive (average of $376). 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 SAT?

Find hourly flight availability from Philadelphia to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

One of the essential ways to save on airfare from Philadelphia to San Antonio is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 28% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to San Antonio. Price data was last updated on August 17, 2025.

Travelers seeking maximum savings on their Philadelphia to San Antonio flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Philadelphia to San Antonio

Explore weekly flight availability from Philadelphia to San Antonio. 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 18, 2025.

The most flights from PHL to SAT are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

What’s the top layover airport for flights from Philadelphia to San Antonio?

Share of 1-stop round-trip flights from Philadelphia to San Antonio chosen by Cheapflights users in the past 12 months, using the same layover each way.

Chicago (MDW) – chosen by Cheapflights users on 33% of 1-stop itineraries from Philadelphia to San Antonio on Cheapflights.

What’s the cheapest layover airport for flights from Philadelphia to San Antonio?

Average round-trip fare for 1-stop flights from Philadelphia to San Antonio, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Orlando (MCO) is the most affordable 1-stop option, with an average round-trip price of $250.

What’s the fastest layover option from Philadelphia to San Antonio?

Shortest average travel time for 1-stop one-way flights from Philadelphia to San Antonio, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Houston (IAH) have the shortest average one-way travel time for 1-stop routes: 6h 32m.

Which airport typically offers the quickest layover for flights from Philadelphia to San Antonio?

Average layover duration for 1-stop one-way flights from Philadelphia to San Antonio, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Houston (IAH) offer the fastest connection on this route, with an average layover time of 1h 08m.

Reviews of airlines servicing San Antonio

Get insights into the airlines that provide service to San Antonio. 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 Antonio. Reviews last updated August 18, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Philadelphia to San Antonio. 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.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

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.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

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.
8.0
Very good

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

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.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

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.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

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.

Entertainment

7.5

Food

7.0

Boarding

8.1

Overall

8.0

Crew

8.6

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 San Antonio. 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 Antonio?

    To fly from Philadelphia to San Antonio, you need to book a flight from Philadelphia (PHL) to San Antonio (SAT). Nonstop flights to San Antonio from Philadelphia take 4h 03m on average. When it comes time to book airfare, you have a few options: there are 2 outbound flights from Philadelphia to San Antonio offered by 6 different airlines.

  • How long is the flight from Philadelphia to San Antonio?

    There are many flights that can get you from Philadelphia to San Antonio in 17h 11m. Fly via Frontier or Spirit Airlines to get the fastest option. There are 1493 mi between Philadelphia and San Antonio. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on Frontier is currently your cheapest option to San Antonio, with prices starting at $125. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and Delta, with the lowest prices starting at $164 and $271, respectively. These flights start at 71% lower than the current average price 3 months from now.

  • What are the cheapest flights from Philadelphia to San Antonio?

    While on average a flight from Philadelphia to San Antonio is generally $479, our data shows the cheapest flight currently is $251. When looking at the most popular route, (Philadelphia - San Antonio), you can expect to pay $167 for that flight.

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

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

  • How can I find direct flights from Philadelphia to San Antonio?

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

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

    Yes. Cheapflights offers flight deals from Philadelphia to San Antonio 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 Antonio?

    Currently, August is the cheapest month in which you can book a flight from Philadelphia to San Antonio (average of $295). Flying from Philadelphia to San Antonio in March is currently the most expensive (average of $376). 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 Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville

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Alternative routes for Philadelphia to San Antonio

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Philadelphia to San Antonio

Discover the top 6 airlines that operate flights from Philadelphia to San Antonio. 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 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$125Average$196FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$164Average$273FlexibilityNo cancel feeOn-time65%
DeltaCheapest$271Average$407FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$308Average$491FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$310Average$486FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$329Average$450FlexibilityNo cancel feeOn-time63%

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