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$53+ 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
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 71 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 July 3, 2025.

Round-trip from

$272
(FlightHub)

One-way from

$53
(Priceline)

Popular in

May

Cheapest in

April

Average price

$481

Good round-trip deal

$447 or less

Good one-way deal

$275 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. 2% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 3, 2025.

This FlightHub deal was found by Cheapflights users on 7/3. 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.
Thu 8/287:00 amPHL - SAT
1 stop5h 44mSpirit Airlines
Sun 8/314:50 pmSAT - PHL
1 stop5h 39mSpirit Airlines
Deal found 7/3$272
This Priceline deal was found by Cheapflights users on 7/1. 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.
Sat 7/125:21 pmPHL - SAT
1 stop8h 13mMultiple Airlines
Mon 7/145:38 pmSAT - PHL
1 stop5h 57mMultiple Airlines
Deal found 7/1$275
This Frontier deal was found by Cheapflights users on 7/2. 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 8/289:56 pmPHL - SAT
2 stops19h 46mFrontier
Mon 9/15:27 pmSAT - PHL
1 stop6h 42mFrontier
Deal found 7/2$280
This Delta deal was found by Cheapflights users on 7/2. 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 8/62:29 pmPHL - SAT
1 stop10h 45mDelta
Thu 8/146:40 amSAT - PHL
1 stop17h 16mDelta
Deal found 7/2$315
This Southwest deal was found by Cheapflights users on 7/1. 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.
Tue 10/75:25 amPHL - SAT
2 stops10h 50mSouthwest
Tue 10/142:20 pmSAT - PHL
1 stop5h 50mSouthwest
Deal found 7/1$322

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 July 3, 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

Sat 7/26

5:21 pm-12:34 am

1 stop8h 13m

San Antonio

Fri 8/1

7:10 am-9:23 am

2 stops25h 13m

$272

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 7/12

5:21 pm-12:34 am

1 stop8h 13m

San Antonio

Mon 7/14

5:38 pm-12:35 am

1 stop5h 57m

$275

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 8/28

9:56 pm-4:42 pm

2 stops19h 46m

San Antonio

Mon 9/1

5:27 pm-1:09 am

1 stop6h 42m

$280

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 8/6

2:29 pm-12:14 am

1 stop10h 45m

San Antonio

Wed 8/13

5:25 am-5:20 pm

1 stop10h 55m

$315

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sun 8/17

7:00 am-11:44 am

1 stop5h 44m

$117

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 8/16

6:15 am-6:02 pm

1 stop12h 47m

$121

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 7/16

5:21 pm-4:33 pm

2 stops24h 12m

$173

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 8/27

6:30 am-5:42 pm

2 stops12h 12m

$204

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 8/1

8:50 am-11:36 am

Nonstop3h 46m

$247

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 7/15

5:30 am-11:35 am

2 stops7h 05m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 June 27, 2025.

The best time to book flights from Philadelphia to San Antonio is 71 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 July 3, 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 June 29, 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.

How much does it cost to fly round-trip from Philadelphia to San Antonio?

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 July 3, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and Spirit 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.
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Spirit Airlines
6.3
Okay
8,086 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.9
Fair
3,286 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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

    Flying on Spirit Airlines is currently your cheapest option to San Antonio, with prices starting at $272. Additional round-trip tickets that might be worth considering are offered by Frontier and Delta, with the lowest prices starting at $280 and $315, respectively. These flights start at 38% 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 $53. However, be on the lookout for offers from Spirit Airlines and United 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 $676, our data shows the cheapest flight currently is $205. When looking at the most popular route, (Philadelphia - San Antonio), you can expect to pay $163 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 Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$127Average$188FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$149Average$234FlexibilityNo cancel feeOn-time65%
DeltaCheapest$270Average$402FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$308Average$490FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$319Average$479FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$330Average$455FlexibilityNo cancel feeOn-time63%

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