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$78+ 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAT
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to San Antonio are usually found in April or May, booked 80 days in advance, depart on a Wednesday or Saturday and return on a Friday

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 April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$255
(Mytrip)

One-way from

$78
(Mytrip)

Popular in

July

Cheapest in

April

Average price

$396

Good round-trip deal

$329 or less
Provider with most accurate pricing for Philadelphia-San Antonio flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-San Antonio flights.
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From Philadelphia to San Antonio
Search Deals
One-way flight from Philadelphia to San Antonio
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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Price to beat on a round-trip 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 April 3, 2025.

This Mytrip deal was found by Cheapflights users on 4/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/177:03 pmPHL - SAT
1 stop25h 58mSpirit Airlines
Mon 4/218:56 pmSAT - PHL
1 stop13h 02mSpirit Airlines
Deal found 4/2$256
This Booking.com deal was found by Cheapflights users on 4/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/156:40 amPHL - SAT
1 stop8h 14mMultiple Airlines
Thu 4/178:29 pmSAT - PHL
1 stop10h 41mMultiple Airlines
Deal found 4/1$264
This Frontier deal was found by Cheapflights users on 4/2. 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 5/2210:29 pmPHL - SAT
1 stop12h 18mFrontier
Thu 5/292:18 pmSAT - PHL
1 stop14h 20mFrontier
Deal found 4/2$298
This American Airlines deal was found by Cheapflights users on 4/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/88:54 amPHL - SAT
Nonstop3h 46mAmerican Airlines
Sat 7/1212:25 pmSAT - PHL
Nonstop3h 44mAmerican Airlines
Deal found 4/2$341
This Southwest deal was found by Cheapflights users on 4/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/85:30 amPHL - SAT
2 stops6h 50mSouthwest
Sat 7/127:25 amSAT - PHL
1 stop9h 15mSouthwest
Deal found 4/2$372
This Delta deal was found by Cheapflights users on 4/2. 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.
Thu 5/156:38 amPHL - SAT
1 stop6h 47mDelta
Sat 5/246:08 pmSAT - PHL
1 stop5h 49mDelta
Deal found 4/2$391
This United deal was found by Cheapflights users on 4/2. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/299:31 amPHL - SAT
2 stops11h 05mUnited Airlines
Tue 5/62:25 pmSAT - PHL
1 stop7h 30mUnited Airlines
Deal found 4/2$440

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 April 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

Thu 4/17

7:03 pm-8:01 pm

1 stop25h 58m

San Antonio

Mon 4/21

8:56 pm-10:58 am

1 stop13h 02m

$256

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 4/15

6:40 am-1:54 pm

1 stop8h 14m

San Antonio

Thu 4/17

8:29 pm-8:10 am

1 stop10h 41m

$264

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 5/22

10:29 pm-9:47 am

1 stop12h 18m

San Antonio

Thu 5/29

2:18 pm-5:38 am

1 stop14h 20m

$298

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 5/15

6:38 am-12:25 pm

1 stop6h 47m

San Antonio

Sat 5/24

6:08 pm-12:57 am

1 stop5h 49m

$391

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 6/13

8:53 am-11:39 am

Nonstop3h 46m

San Antonio

Sun 6/15

12:19 pm-4:59 pm

Nonstop3h 40m

$437

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 4/29

9:31 am-7:36 pm

2 stops11h 05m

San Antonio

Tue 5/6

2:25 pm-10:55 pm

1 stop7h 30m

$440

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sun 6/15

1:25 pm-12:30 am

2 stops12h 05m

San Antonio

Fri 6/20

4:35 pm-12:50 am

1 stop7h 15m

$491

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 5/3

11:53 am-4:08 pm

1 stop29h 15m

$78

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sun 4/27

12:03 pm-6:59 pm

1 stop7h 56m

$119

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 6/25

4:56 pm-10:57 pm

1 stop7h 01m

$221

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 13 results
1
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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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars
CheapOairPrice Accuracy1 starTrust Score*3 stars

*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 28, 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 April 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 24% 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 March 30, 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.

Rainfall in San Antonio by month

Plan your trip to San Antonio by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Antonio ranges from 1.6 - 3.7 inches per month. May is typically the wettest month, when rainfall can reach 3.7 in. December is typically the driest time to visit San Antonio when rainfall is around 1.6 in.

Temperature in San Antonio by month

Plan your trip to San Antonio by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Antonio, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 April 3, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Philadelphia to San Antonio to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,827 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,827 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,274 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,897 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,619 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,827 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 $255. Additional round-trip tickets that might be worth considering are offered by Frontier and American Airlines, with the lowest prices starting at $268 and $341, respectively. These flights start at 41% 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 Spirit Airlines, with whom users have recently found tickets for as low as $78. However, be on the lookout for offers from Frontier and Southwest, 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 $437, our data shows the cheapest flight currently is $273. When looking at the most popular route, (Philadelphia - San Antonio), you can expect to pay $160 for that flight.

  • Where are the most common layover locations when flying from Philadelphia to San Antonio?

    Philadelphia to San Antonio flights have a layover in Dallas most often. Atlanta follows Dallas in terms of the most common layover location on Philadelphia to San Antonio flights.

  • What are some popular things to do or see while on a layover in Dallas?

    Dallas travelers tend to visit American Airlines Center, Dos Equis Pavilion, and Dallas World Aquarium more than anywhere else. American Airlines Center, Dos Equis Pavilion and Dallas World Aquarium are located about 15.0 mi, 18.3 mi, and 15.5 mi, respectively from Dallas/Fort Worth if you are interested in checking them out. Travelers can book a car rental at Dallas/Fort Worth for about $58 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Atlanta?

    Georgia Aquarium, Fox Theatre, and World of Coca-Cola are currently the most popular points of interest in Atlanta at the moment. Those on a layover in Atlanta interested in visiting Georgia Aquarium, Fox Theatre, or World of Coca-Cola can do so by traveling 8.6 mi, 9.3 mi, and 8.6 mi, respectively from Atlanta Hartsfield-Jackson. Those landing in Atlanta looking to spend some time exploring during their layover can rent a car for about $52 per day.

  • Where are the least popular layover locations for Philadelphia to San Antonio flights?

    Flights departing from Philadelphia and landing in San Antonio layover in Atlanta least frequently.

  • 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 April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$125Average$166FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$149Average$226FlexibilityNo cancel feeOn-time65%
DeltaCheapest$266Average$420FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$317Average$463FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$318Average$454FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$330Average$453FlexibilityNo cancel feeOn-time63%

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