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$92+ 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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to San Antonio are usually found in April or August, booked 62 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 September 17, 2025.

Round-trip from

$226
(Orbitz)

One-way from

$92
(Frontier)

Popular in

June

Cheapest in

April

Average price

$443

Good round-trip deal

$331 or less

Good one-way deal

$409 or less
From Philadelphia to San Antonio
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One-way flight from Philadelphia to San Antonio
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Highest demand for flights based on searches. 9% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Philadelphia to San Antonio.
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Price to beat on a one-way flight from Philadelphia to San Antonio.
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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 September 17, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:15 amPHL - SAT
1 stop6h 33mFrontier
Mon 9/295:40 pmSAT - PHL
1 stop6h 17mFrontier
Deal found 9/17$225
This Orbitz deal was found by Cheapflights users on 9/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/186:42 amPHL - SAT
1 stop10h 55mMultiple Airlines
Thu 10/237:35 pmSAT - PHL
2 stops16h 18mMultiple Airlines
Deal found 9/16$226
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:32 amPHL - SAT
1 stop9h 05mFrontier
Mon 10/137:15 pmSAT - PHL
1 stop18h 02mFrontier
Deal found 9/17$227
This Frontier deal was found by Cheapflights users on 9/17. 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.
Sun 10/265:20 amPHL - SAT
1 stop12h 32mFrontier
Mon 10/275:45 pmSAT - PHL
1 stop6h 14mFrontier
Deal found 9/17$228
This Booking.com deal was found by Cheapflights users on 9/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:05 amPHL - SAT
1 stop14h 10mFrontier
Mon 10/205:45 pmSAT - PHL
1 stop6h 14mFrontier
Deal found 9/17$229
This Orbitz deal was found by Cheapflights users on 9/16. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:19 amPHL - SAT
1 stop14h 24mMultiple Airlines
Sun 11/166:00 amSAT - PHL
2 stops17h 32mMultiple Airlines
Deal found 9/16$231
This Orbitz deal was found by Cheapflights users on 9/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:45 amPHL - SAT
1 stop12h 45mMultiple Airlines
Sun 10/57:35 pmSAT - PHL
1 stop12h 57mMultiple Airlines
Deal found 9/15$235
This Expedia deal was found by Cheapflights users on 9/16. 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.
Thu 10/1610:54 amPHL - SAT
1 stop8h 36mSpirit Airlines
Mon 10/207:35 pmSAT - PHL
2 stops16h 18mSpirit Airlines
Deal found 9/16$236
This Frontier deal was found by Cheapflights users on 9/15. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:30 amPHL - SAT
2 stops15h 05mFrontier
Sun 10/128:26 pmSAT - PHL
2 stops14h 36mFrontier
Deal found 9/15$237
This Expedia deal was found by Cheapflights users on 9/16. 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.
Thu 10/25:15 amPHL - SAT
1 stop6h 33mMultiple Airlines
Sun 10/57:35 pmSAT - PHL
1 stop12h 57mMultiple Airlines
Deal found 9/16$240
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:15 amPHL - SAT
1 stop6h 33mFrontier
Fri 10/35:40 pmSAT - PHL
1 stop6h 19mFrontier
Deal found 9/15$244
This Expedia deal was found by Cheapflights users on 9/16. 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 10/116:42 amPHL - SAT
1 stop10h 55mMultiple Airlines
Mon 10/137:35 pmSAT - PHL
2 stops16h 18mMultiple Airlines
Deal found 9/16$245

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 September 17, 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

Fri 10/10

5:05 am-6:15 pm

1 stop14h 10m

San Antonio

Mon 10/13

7:15 pm-8:04 pm

1 stop23h 49m

$250

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 12/6

7:06 am-12:10 pm

1 stop6h 04m

San Antonio

Sat 12/13

3:51 pm-11:09 pm

1 stop6h 18m

$277

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 10/23

10:54 am-6:30 pm

1 stop8h 36m

San Antonio

Sun 10/26

7:35 pm-12:53 pm

2 stops16h 18m

$289

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 10/3

5:10 am-6:12 pm

1 stop14h 02m

San Antonio

Wed 10/8

7:00 am-11:26 am

2 stops27h 26m

$320

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 10/21

5:55 am-10:10 am

1 stop5h 15m

San Antonio

Tue 10/28

5:55 am-1:15 pm

1 stop6h 20m

$337

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 10/8

1:45 pm-7:25 pm

1 stop6h 40m

San Antonio

Thu 10/9

7:00 am-11:29 am

Nonstop3h 29m

$339

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 12/11

5:03 pm-3:11 pm

2 stops23h 08m

San Antonio

Sun 12/14

6:00 am-12:32 am

2 stops17h 32m

$342

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 12/9

10:31 am-3:46 pm

1 stop6h 15m

San Antonio

Sat 12/13

5:55 pm-12:35 am

1 stop5h 40m

$346

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 10/31

5:30 am-11:15 am

1 stop6h 45m

San Antonio

Tue 11/4

12:30 pm-9:15 pm

1 stop7h 45m

$349

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 10/21

10:35 am-4:07 pm

1 stop6h 32m

San Antonio

Thu 10/23

4:35 pm-11:05 pm

1 stop5h 30m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 23 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 September 12, 2025.

The best time to book flights from Philadelphia to San Antonio is 62 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 September 17, 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 29% 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 September 14, 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. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 17, 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.
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 06m 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 6h 04m. Fly via Frontier, Delta, 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 $197 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 $410, our data shows the cheapest flight currently is $170. When looking at the most popular route, (Philadelphia - San Antonio), you can expect to pay $200 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.
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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$125Average$206FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$197Average$276FlexibilityNo cancel feeOn-time65%
DeltaCheapest$271Average$403FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$308Average$490FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$308Average$482FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$329Average$446FlexibilityNo cancel feeOn-time63%

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