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$103+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SAT
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 71 days in advance, depart on a Wednesday or Saturday 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 June 12, 2025.

Round-trip from

$335
(Southwest)

One-way from

$103
(Cheapflightsfares)

Popular in

July

Cheapest in

April

Average price

$466

Good round-trip deal

$394 or less

Good one-way deal

$247 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 ($10 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 June 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 June 12, 2025.

This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/234:50 pmPHL - SAT
1 stop5h 35mSouthwest
Wed 8/2712:05 pmSAT - PHL
2 stops8h 45mSouthwest
Deal found 6/10$335
This Mytrip deal was found by Cheapflights users on 6/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/259:12 pmPHL - SAT
2 stops23h 10mSpirit Airlines
Sun 7/277:25 amSAT - PHL
1 stop23h 39mSpirit Airlines
Deal found 6/9$336
This Frontier deal was found by Cheapflights users on 6/11. 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.
Sat 8/306:25 amPHL - SAT
1 stop9h 10mFrontier
Thu 9/112:55 pmSAT - PHL
1 stop12h 54mFrontier
Deal found 6/11$340
This American Airlines deal was found by Cheapflights users on 6/11. 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 7/158:50 amPHL - SAT
Nonstop3h 46mAmerican Airlines
Tue 7/2212:16 pmSAT - PHL
Nonstop3h 44mAmerican Airlines
Deal found 6/11$341
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Mon 6/165:30 amPHL - SAT
1 stop12h 13mMultiple Airlines
Fri 6/2012:32 pmSAT - PHL
1 stop27h 40mMultiple Airlines
Deal found 6/11$343
This United Airlines deal was found by Cheapflights users on 6/11. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/25:16 pmPHL - SAT
1 stop6h 22mUnited Airlines
Wed 7/97:00 amSAT - PHL
1 stop6h 08mUnited Airlines
Deal found 6/11$349
This Delta deal was found by Cheapflights users on 6/11. 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.
Sun 8/316:45 pmPHL - SAT
1 stop5h 49mDelta
Tue 9/96:40 amSAT - PHL
1 stop9h 40mDelta
Deal found 6/11$390

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 June 12, 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 8/23

4:50 pm-9:25 pm

1 stop5h 35m

San Antonio

Wed 8/27

12:05 pm-9:50 pm

2 stops8h 45m

$335

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 7/25

9:12 pm-7:22 pm

2 stops23h 10m

San Antonio

Sun 7/27

7:25 am-8:04 am

1 stop23h 39m

$336

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 8/30

6:25 am-2:35 pm

1 stop9h 10m

San Antonio

Sun 9/7

8:26 pm-4:49 am

1 stop7h 23m

$340

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 7/15

8:50 am-11:36 am

Nonstop3h 46m

San Antonio

Tue 7/22

12:16 pm-5:00 pm

Nonstop3h 44m

$341

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Mon 6/16

5:30 am-4:43 pm

1 stop12h 13m

San Antonio

Fri 6/20

12:32 pm-5:12 pm

1 stop27h 40m

$343

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 7/2

5:16 pm-10:38 pm

1 stop6h 22m

San Antonio

Wed 7/9

7:00 am-2:08 pm

1 stop6h 08m

$349

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sun 8/31

6:45 pm-11:34 pm

1 stop5h 49m

San Antonio

Tue 9/9

6:40 am-5:20 pm

1 stop9h 40m

$390

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 8/27

5:45 am-11:14 am

1 stop6h 29m

$103

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 7/3

9:08 am-9:21 am

1 stop25h 13m

$181

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Wed 8/27

8:15 am-1:22 pm

1 stop6h 07m

$208

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 12 results
1
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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 9, 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 June 12, 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 afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 25% 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 8, 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.

Weekly flight availability from Philadelphia to San Antonio

Explore weekly flight availability from Philadelphia to San Antonio. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from PHL to SAT are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

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 June 12, 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
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 3h 46m 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.

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

    Flying on Southwest is currently your cheapest option to San Antonio, with prices starting at $335. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and Frontier, with the lowest prices starting at $336 and $340, respectively. These flights start at 24% 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 $103. However, be on the lookout for offers from Frontier 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 $357, our data shows the cheapest flight currently is $247. When looking at the most popular route, (Philadelphia - San Antonio), you can expect to pay $187 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 Atlanta most often.

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

    Atlanta travelers tend to visit Georgia Aquarium, Fox Theatre, and World of Coca-Cola more than anywhere else. Georgia Aquarium, Fox Theatre and World of Coca-Cola are located about 8.6 mi, 9.3 mi, and 8.6 mi, respectively from Atlanta Hartsfield-Jackson if you are interested in checking them out. Travelers can book a car rental at Atlanta Hartsfield-Jackson for about $52 per day to make their sightseeing more efficient.

  • 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

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New Braunfels

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$127Average$189FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$149Average$227FlexibilityNo cancel feeOn-time65%
DeltaCheapest$270Average$401FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$308Average$484FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$318Average$472FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$330Average$457FlexibilityNo cancel feeOn-time63%

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