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$65+ 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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAT
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Philadelphia to San Antonio are usually found in April or August, booked 83 days in advance, depart on a Saturday or Wednesday and return on a Saturday

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 October 30, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$217
(Kiwi.com)

One-way from

$65
(Frontier)

Popular in

June

Cheapest in

April

Average price

$422

Good round-trip deal

$403 or less

Good one-way deal

$457 or less
Provider with most accurate pricing for Philadelphia-San Antonio flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-San Antonio flights.
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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. 10% potential increase in price ($50 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 October 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 October 30, 2025.

This CheapOair deal was found by Cheapflights users on 10/28. 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.
Wed 11/126:00 amPHL - SAT
1 stop13h 32mSpirit Airlines
Tue 11/1810:58 amSAT - PHL
2 stops11h 28mSpirit Airlines
Deal found 10/28$218
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/256:15 amPHL - SAT
1 stop10h 44mMultiple Airlines
Thu 12/49:10 amSAT - PHL
2 stops13h 05mMultiple Airlines
Deal found 10/29$219
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/245:46 amPHL - SAT
1 stop11h 22mMultiple Airlines
Mon 12/18:33 pmSAT - PHL
1 stop12h 27mMultiple Airlines
Deal found 10/28$220
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/227:40 amPHL - SAT
1 stop11h 52mMultiple Airlines
Fri 12/55:46 pmSAT - PHL
2 stops16h 31mMultiple Airlines
Deal found 10/28$221
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip 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 11/167:37 pmSAT - PHL
1 stop12h 53mMultiple Airlines
Deal found 10/28$222
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:00 amPHL - SAT
2 stops10h 59mSpirit Airlines
Sat 12/62:13 pmSAT - PHL
2 stops8h 03mSpirit Airlines
Deal found 10/28$223
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:50 amPHL - SAT
1 stop11h 50mMultiple Airlines
Mon 11/177:37 pmSAT - PHL
2 stops16h 20mMultiple Airlines
Deal found 10/30$225
This Frontier deal was found by Cheapflights users on 10/29. 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 11/136:19 amPHL - SAT
1 stop14h 24mFrontier
Mon 11/175:35 pmSAT - PHL
1 stop5h 44mFrontier
Deal found 10/29$226
This CheapOair deal was found by Cheapflights users on 10/29. 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 11/96:00 amPHL - SAT
1 stop13h 32mSpirit Airlines
Thu 11/137:37 pmSAT - PHL
1 stop12h 53mSpirit Airlines
Deal found 10/29$227
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:15 amPHL - SAT
1 stop10h 44mMultiple Airlines
Sun 12/710:25 amSAT - PHL
1 stop18h 06mMultiple Airlines
Deal found 10/28$229
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1710:10 pmPHL - SAT
2 stops21h 22mSpirit Airlines
Wed 11/1910:58 amSAT - PHL
2 stops11h 43mSpirit Airlines
Deal found 10/28$230
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/275:25 amPHL - SAT
1 stop14h 07mSpirit Airlines
Mon 12/18:33 pmSAT - PHL
2 stops26h 53mSpirit Airlines
Deal found 10/28$231

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 October 30, 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

Mon 11/24

12:30 pm-7:21 pm

1 stop7h 51m

San Antonio

Thu 12/4

9:10 am-11:15 pm

2 stops13h 05m

$245

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 11/14

6:19 am-7:30 pm

1 stop14h 11m

San Antonio

Tue 11/18

10:58 am-11:26 pm

2 stops11h 28m

$248

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 2/25

5:15 am-10:27 pm

2 stops18h 12m

San Antonio

Sun 3/1

4:16 pm-12:32 am

1 stop7h 16m

$300

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 11/15

1:26 pm-6:32 pm

3 stops30h 06m

San Antonio

Thu 11/20

7:37 pm-2:05 pm

2 stops17h 28m

$328

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 11/14

8:51 pm-11:45 pm

3 stops27h 54m

San Antonio

Tue 11/18

6:45 am-2:15 pm

3 stops30h 30m

$332

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 12/2

6:00 am-10:56 am

1 stop5h 56m

San Antonio

Sat 12/6

11:41 am-6:12 pm

1 stop5h 31m

$361

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 3/21

12:15 pm-8:00 pm

1 stop8h 45m

San Antonio

Wed 3/25

7:30 am-4:15 pm

1 stop7h 45m

$361

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 3/21

8:25 am-3:31 pm

1 stop8h 06m

San Antonio

Wed 3/25

12:15 pm-6:19 pm

1 stop5h 04m

$361

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 12/6

6:18 am-11:56 am

1 stop6h 38m

San Antonio

Mon 12/8

4:52 pm-12:51 am

1 stop6h 59m

$361

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Mon 11/10

5:50 am-4:40 pm

1 stop11h 50m

San Antonio

Tue 11/11

7:37 pm-12:57 pm

2 stops16h 20m

$364

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 23 results
1
2
3

Compare providers for flights from Philadelphia to San Antonio

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Philadelphia to San Antonio in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Philadelphia-San Antonio flights, users find the pricing of Justfly.com to be most consistent on Cheapflights vs. Justfly.com Users can find the same prices on Philadelphia-San Antonio flight deals on Cheapflights vs. Justfly.com >95% of the time. Price accuracy is based on data collected from Philadelphia-San Antonio flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Philadelphia-San Antonio flights, Cheapflights users trust Justfly.com the most. Justfly.com has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Philadelphia-San Antonio flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 October 24, 2025.

The best time to book flights from Philadelphia to San Antonio is 83 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, January is the cheapest month in which you can book a flight from Philadelphia to San Antonio (average of $98). Flying from Philadelphia to San Antonio in February is currently the most expensive (average of $163). 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 October 30, 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 26% 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 October 26, 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 October 30, 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
4,243 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

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
4,243 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

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
7.9
Good
7,998 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

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
8,998 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

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
11,035 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

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
3,122 reviews
Southwest
8.0
Very good
4,243 reviews

Overall

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Crew

8.6

Comfort

8.0

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 is 1 outbound flight 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 18h 12m. Fly via Spirit Airlines to get the fastest option. There are 1493 mi between Philadelphia and San Antonio.

  • 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 $122. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and Delta, with the lowest prices starting at $189 and $271, respectively. These flights start at 72% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Philadelphia to San Antonio?

    Consider Qatar Airways (72%), American Airlines (63%) or Sun Country Air (0%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to San Antonio.

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

    While on average a flight from Philadelphia to San Antonio is generally $435, our data shows the cheapest flight currently is $257. When looking at the most popular route, (Philadelphia - San Antonio), you can expect to pay $153 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, January is the cheapest month in which you can book a flight from Philadelphia to San Antonio (average of $98). Flying from Philadelphia to San Antonio in February is currently the most expensive (average of $163). 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$122Average$225FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$189Average$274FlexibilityNo cancel feeOn-time65%
DeltaCheapest$271Average$406FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$308Average$489FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$308Average$480FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$329Average$452FlexibilityNo cancel feeOn-time63%

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