San Antonio

$80+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAT
Apr 9 — Apr 161
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Find cheap flights from Philadelphia to San Antonio with Cheapflights

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 October, booked 83 days in advance, depart on a Saturday or Wednesday and return on a Wednesday

Cheap 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 March 10, 2026.

This CheapOair deal was found by Cheapflights users on 3/10. 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 4/98:25 pm
PHL
-
SAT
1 stop28h 54m
Frontier
Sun 4/126:45 am
SAT
-
PHL
1 stop21h 46m
Frontier
Deal found 3/10$221
This CheapOair deal was found by Cheapflights users on 3/9. 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 4/128:25 pm
PHL
-
SAT
1 stop28h 54m
Frontier
Sun 4/192:59 pm
SAT
-
PHL
1 stop13h 35m
Frontier
Deal found 3/9$222
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 5/98:25 pm
PHL
-
SAT
1 stop18h 54m
Multiple Airlines
Thu 5/146:00 am
SAT
-
PHL
1 stop16h 10m
Multiple Airlines
Deal found 3/10$227
This American Airlines deal was found by Cheapflights users on 3/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1810:35 am
PHL
-
SAT
Nonstop4h 10m
American Airlines
Mon 9/215:58 pm
SAT
-
PHL
1 stop5h 11m
American Airlines
Deal found 3/10$229
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 5/158:25 pm
PHL
-
SAT
1 stop19h 14m
Frontier
Tue 5/193:14 pm
SAT
-
PHL
2 stops31h 43m
Frontier
Deal found 3/9$234
This Delta deal was found by Cheapflights users on 3/9. 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.
Wed 5/205:17 am
PHL
-
SAT
1 stop5h 35m
Delta
Sat 5/234:00 pm
SAT
-
PHL
1 stop6h 07m
Delta
Deal found 3/9$237
This Southwest deal was found by Cheapflights users on 3/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:35 pm
PHL
-
SAT
1 stop5h 55m
Southwest
Mon 5/254:45 pm
SAT
-
PHL
1 stop5h 20m
Southwest
Deal found 3/9$239
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 5/158:25 pm
PHL
-
SAT
1 stop19h 14m
Frontier
Wed 5/203:14 pm
SAT
-
PHL
1 stop13h 20m
Frontier
Deal found 3/9$241
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Wed 4/2211:02 am
PHL
-
SAT
2 stops13h 49m
Multiple Airlines
Wed 4/294:49 pm
SAT
-
PHL
1 stop11h 45m
Multiple Airlines
Deal found 3/9$242
This Southwest deal was found by Cheapflights users on 3/9. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:15 am
PHL
-
SAT
2 stops9h 35m
Southwest
Thu 5/143:20 pm
SAT
-
PHL
1 stop8h 15m
Southwest
Deal found 3/9$244
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 5/148:25 pm
PHL
-
SAT
1 stop18h 54m
Frontier
Wed 5/203:14 pm
SAT
-
PHL
2 stops22h 48m
Frontier
Deal found 3/9$245

Find 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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$221
(CheapOair)

One-way from

$80
(American Airlines)

Popular in

November

Cheapest in

April

Average price

$493

Good round-trip deal

$414 or less

Good one-way deal

$109 or less
Provider with most accurate pricing for Philadelphia-San Antonio flight deals.
Provider most trusted by Cheapflights users for Philadelphia-San Antonio flights.
From Philadelphia to San Antonio
One-way flight from Philadelphia to San Antonio
Highest demand for flights based on searches. 6% potential increase in price ($30 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Average for round-trip flights in March 2026
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.

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 March 10, 2026.
Use the filters below to find and compare flights from Philadelphia to San Antonio that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 5/20

5:45 pm-11:50 pm

1 stop7h 05m

San Antonio

Sat 5/23

11:45 am-9:35 pm

2 stops8h 50m

$294

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 4/10

4:30 pm-11:00 pm

2 stops7h 30m

San Antonio

Mon 4/13

3:05 pm-10:45 pm

2 stops6h 40m

$299

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 5/7

12:20 pm-11:00 pm

2 stops11h 40m

San Antonio

Mon 5/11

3:05 pm-11:05 pm

2 stops7h 00m

$305

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 4/4

6:10 pm-10:50 pm

1 stop5h 40m

San Antonio

Sat 4/11

11:40 am-9:35 pm

2 stops8h 55m

$324

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Mon 4/20

12:20 pm-11:00 pm

2 stops11h 40m

San Antonio

Fri 4/24

3:05 pm-10:45 pm

2 stops6h 40m

$325
Quickest round-trip

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 5/21

5:17 am-11:03 am

1 stop6h 46m

San Antonio

Sun 5/24

5:20 am-11:50 am

1 stop5h 30m

$328

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 4/17

7:55 am-2:30 pm

2 stops7h 35m

San Antonio

Mon 4/20

3:05 pm-10:45 pm

2 stops6h 40m

$329

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 5/22

12:20 pm-11:00 pm

2 stops11h 40m

San Antonio

Tue 5/26

3:50 pm-10:00 pm

1 stop5h 10m

$330

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Mon 4/27

12:20 pm-11:00 pm

2 stops11h 40m

San Antonio

Fri 5/1

3:05 pm-10:45 pm

2 stops6h 40m

$345

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 4/25

6:17 am-12:24 pm

1 stop7h 07m

San Antonio

Wed 4/29

5:30 am-11:43 am

1 stop5h 13m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Showing 1-10 of 23 resultsSorted by cheapest first
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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Philadelphia-San Antonio flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 March 6, 2026.

The best time to book flights from Philadelphia to San Antonio is 82 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, December is the cheapest month in which you can book a flight from Philadelphia to San Antonio (average of $56). Flying from Philadelphia to San Antonio in May is currently the most expensive (average of $138). 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.

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 March 10, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited 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.

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

Comfort

8.0

Boarding

8.1

Crew

8.6

Overall

8.0

Entertainment

7.5

Food

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

KOA - HNL

pretty smooth and fast service ever, that flight is very helpful each and everyone for price and also fright for free..

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.
  • How popular is this Philadelphia to San Antonio flight route?

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

    There are many flights that can get you from Philadelphia to San Antonio in 7h 05m. Fly via Southwest 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 $127. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and Delta, with the lowest prices starting at $149 and $266, respectively. These flights start at 72% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $80. However, be on the lookout for offers from Spirit Airlines and American Airlines, as they are both options that can get you from Philadelphia to San Antonio for a low price.

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

    While on average a flight from Philadelphia to San Antonio is generally $381, our data shows the cheapest flight currently is $69. When looking at the most popular route, (Philadelphia - San Antonio), you can expect to pay $174 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, December is the cheapest month in which you can book a flight from Philadelphia to San Antonio (average of $56). Flying from Philadelphia to San Antonio in May is currently the most expensive (average of $138). 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$127Average$239FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$149Average$268FlexibilityNo cancel feeOn-time65%
DeltaCheapest$266Average$450FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$287Average$496FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$329Average$457FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$336Average$506FlexibilityNo cancel feeOn-time71%

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