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Cheap flights from Philadelphia to San Antonio from $87

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to San Antonio departing on 11/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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Multiple Airlines Logo
5:35 pm - 6:32 pmPHL-SAT
25h 57m2 stops
Multiple Airlines Logo
8:25 pm - 4:49 amSAT-PHL
7h 24m1 stop
$225Multiple Airlines
Find Deal
Tue, Nov 4 - Fri, Nov 7
Spirit Airlines Logo
5:20 am - 3:50 pmPHL-SAT
11h 30m1 stop
Spirit Airlines Logo
7:35 pm - 9:32 amSAT-PHL
12h 57m1 stop
$226Spirit Airlines
Find Deal
Mon, Oct 20 - Thu, Oct 23
Multiple Airlines Logo
5:15 am - 3:11 pmPHL-SAT
10h 56m1 stop
Multiple Airlines Logo
6:33 pm - 7:29 amSAT-PHL
11h 56m1 stop
$227Multiple Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
Multiple Airlines Logo
8:08 pm - 6:15 pmPHL-SAT
23h 07m1 stop
Multiple Airlines Logo
7:10 pm - 12:53 pmSAT-PHL
16h 43m1 stop
$228Multiple Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
Multiple Airlines Logo
6:19 am - 7:30 pmPHL-SAT
14h 11m1 stop
Multiple Airlines Logo
7:37 pm - 12:57 pmSAT-PHL
16h 20m2 stops
$229Multiple Airlines
Find Deal
Fri, Nov 14 - Mon, Nov 17
Multiple Airlines Logo
5:25 am - 6:32 pmPHL-SAT
14h 07m1 stop
Multiple Airlines Logo
4:16 pm - 12:48 amSAT-PHL
7h 32m1 stop
$230Multiple Airlines
Find Deal
Tue, Dec 2 - Thu, Dec 11
Spirit Airlines Logo
5:15 am - 3:11 pmPHL-SAT
10h 56m1 stop
Spirit Airlines Logo
6:00 am - 12:32 amSAT-PHL
17h 32m2 stops
$232Spirit Airlines
Find Deal
Fri, Dec 12 - Sun, Dec 14
Spirit Airlines Logo
5:20 am - 3:50 pmPHL-SAT
11h 30m1 stop
Spirit Airlines Logo
7:35 pm - 12:53 pmSAT-PHL
16h 18m2 stops
$237Spirit Airlines
Find Deal
Mon, Oct 20 - Mon, Oct 27
Frontier Logo
6:42 am - 4:37 pmPHL-SAT
10h 55m1 stop
Frontier Logo
8:43 pm - 4:49 amSAT-PHL
7h 06m1 stop
$262Frontier
Find Deal
Sat, Oct 25 - Thu, Oct 30
Frontier Logo
6:19 am - 7:48 pmPHL-SAT
14h 29m1 stop
Frontier Logo
3:12 pm - 9:13 amSAT-PHL
17h 01m2 stops
$275Frontier
Find Deal
Thu, Oct 30 - Sat, Nov 1

Spirit Airlines flights from Philadelphia to San Antonio

Our best Spirit Airlines deals on Philadelphia to San Antonio flight tickets
Spirit Airlines
Oct 20
PHL5:20 amPhiladelphia
11h 30m
1 stop
SAT3:50 pmSan Antonio
Oct 23
SAT7:35 pmSan Antonio
12h 57m
1 stop
PHL9:32 amPhiladelphia
$226
Find similar
Spirit Airlines
Dec 12
PHL5:15 amPhiladelphia
10h 56m
1 stop
SAT3:11 pmSan Antonio
Dec 14
SAT6:00 amSan Antonio
17h 32m
2 stops
PHL12:32 amPhiladelphia
$232
Find similar
Spirit Airlines
Oct 20
PHL5:20 amPhiladelphia
11h 30m
1 stop
SAT3:50 pmSan Antonio
Oct 27
SAT7:35 pmSan Antonio
16h 18m
2 stops
PHL12:53 pmPhiladelphia
$237
Find similar

Frontier flights from Philadelphia to San Antonio

Our best Frontier deals on Philadelphia to San Antonio flight tickets
Frontier
Oct 25
PHL6:42 amPhiladelphia
10h 55m
1 stop
SAT4:37 pmSan Antonio
Oct 30
SAT8:43 pmSan Antonio
7h 06m
1 stop
PHL4:49 amPhiladelphia
$262
Find similar
Frontier
Oct 30
PHL6:19 amPhiladelphia
14h 29m
1 stop
SAT7:48 pmSan Antonio
Nov 1
SAT3:12 pmSan Antonio
17h 01m
2 stops
PHL9:13 amPhiladelphia
$275
Find similar
Frontier
Oct 18
PHL6:42 amPhiladelphia
10h 55m
1 stop
SAT4:37 pmSan Antonio
Oct 22
SAT3:59 pmSan Antonio
12h 20m
1 stop
PHL5:19 amPhiladelphia
$285
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated October 7, 2025.
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

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 11/4

5:35 pm-6:32 pm

2 stops25h 57m

San Antonio

Fri 11/7

8:25 pm-4:49 am

1 stop7h 24m

$225

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Mon 10/20

5:20 am-3:50 pm

1 stop11h 30m

San Antonio

Thu 10/23

7:35 pm-9:32 am

1 stop12h 57m

$226

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 12/6

5:15 am-3:11 pm

1 stop10h 56m

San Antonio

Sun 12/7

6:33 pm-7:29 am

1 stop11h 56m

$227

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 10/23

8:08 pm-6:15 pm

1 stop23h 07m

San Antonio

Mon 10/27

7:10 pm-12:53 pm

1 stop16h 43m

$228

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 11/14

6:19 am-7:30 pm

1 stop14h 11m

San Antonio

Mon 11/17

7:37 pm-12:57 pm

2 stops16h 20m

$229

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Tue 12/2

5:25 am-6:32 pm

1 stop14h 07m

San Antonio

Thu 12/11

4:16 pm-12:48 am

1 stop7h 32m

$230

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Fri 12/12

5:15 am-3:11 pm

1 stop10h 56m

San Antonio

Sun 12/14

6:00 am-12:32 am

2 stops17h 32m

$232

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Mon 10/20

5:20 am-3:50 pm

1 stop11h 30m

San Antonio

Mon 10/27

7:35 pm-12:53 pm

2 stops16h 18m

$237

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Sat 10/25

6:42 am-4:37 pm

1 stop10h 55m

San Antonio

Thu 10/30

8:43 pm-4:49 am

1 stop7h 06m

$262

PhiladelphiaSan Antonio

PHL - SAT

PHLSAT

Philadelphia

Thu 10/30

6:19 am-7:48 pm

1 stop14h 29m

San Antonio

Sat 11/1

3:12 pm-9:13 am

2 stops17h 01m

$275

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Antonio from

How to get the cheapest flight ticket from Philadelphia to San Antonio

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Philadelphia and San Antonio?

What is the cheapest month to fly to San Antonio?

If you aren’t able to travel during the month of April, then book flights to San Antonio from Philadelphia during August instead. Flights to San Antonio in August, while not as cheap as those in April, still average around $407.

What is the cheapest day to depart on your flight to San Antonio?

The cheapest day to depart on your flight to San Antonio is on a Saturday when prices can be found for as low as $398. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to San Antonio on Monday is $800.

What is the cheapest time of day to depart on your flight to San Antonio?

According to our data, the cheapest time of day to fly to San Antonio is in the evening. momondo users have found flights departing from Philadelphia to San Antonio in the evening for as low as $353. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to San Antonio are more costly in the morning, with an average ticket price of $488. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Philadelphia to San Antonio flight route?

Fly from Philadelphia to San Antonio for the best Philadelphia - San Antonio flight prices

How far in advance should I book a flight to San Antonio?

You are more likely to see cheaper flights to San Antonio from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to San Antonio for around $436 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Antonio from Philadelphia for as low as $317 on momondo.

What cabin class options are available on Philadelphia to San Antonio flights?

There are 3 cabin classes available to choose from on Philadelphia to San Antonio flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Philadelphia to San Antonio flight prices changed over time?

As of October 2025, prices for Philadelphia to San Antonio flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from Philadelphia to San Antonio

Are you open to changing your travel dates? Check out the ideal times to fly from Philadelphia to San Antonio according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Philadelphia to San Antonio (PHL to SAT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Philadelphia to San Antonio

Best Price Found

$222

Fastest flight time

4h 06m

Direct flights

Every day

Airports in San Antonio

1 airport
The best one-way flight to San Antonio from Philadelphia in the past 72 hours is $222. The best round-trip flight deal from Philadelphia to San Antonio found on momondo in the last 72 hours is $413.
The fastest flight from Philadelphia to San Antonio takes 4h 06m
Direct flights go from Philadelphia to San Antonio every day.
There is 1 airport near San Antonio: San Antonio (SAT)
Search flight deals

  • How far is Philadelphia to San Antonio by plane?

    A flight from Philadelphia to San Antonio will travel around 1504.8 mi. In terms of flight time, this usually takes a little over 6h 31m.

  • When did momondo last update prices for flights from Philadelphia Airport to San Antonio Airport?

    Prices for flights from Philadelphia Airport to San Antonio Airport refresh daily.

  • How many operators does momondo search for flights from Philadelphia Airport to San Antonio Airport?

  • How old do you have to be to fly from Philadelphia Airport to San Antonio Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to San Antonio Airport.

  • What documentation or ID do you need to fly to San Antonio Airport?

    The travel and health documents required for your trip to San Antonio Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Antonio Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Philadelphia to San Antonio?

  • What is the most popular airline from Philadelphia to San Antonio?

Best airlines flying from Philadelphia to San Antonio

Compare and see reviews for airlines that fly from Philadelphia to San Antonio with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $126Free CancellationRating
5.8
3,144 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $197Free CancellationRating
6.3
8,080 reviews
Search Spirit Airlines flights
DeltaPriceFrom $270Free CancellationRating
7.9
7,969 reviews
Search Delta flights
United AirlinesPriceFrom $308Free CancellationRating
7.4
8,957 reviews
Search United Airlines flights
American AirlinesPriceFrom $308Free CancellationRating
7.2
11,041 reviews
Search American Airlines flights
SouthwestPriceFrom $331Free CancellationRating
8.0
4,234 reviews
Search Southwest flights

  • American Airlines Flights From Philadelphia to San Antonio

    American Airlines is one of the most popular airlines flying from Philadelphia to San Antonio, operating 7 flights/week on average for this route. A good American Airlines flight deal for Philadelphia to San Antonio starts from $308 round-trip, up to an average price of $482. Our users have rated American Airlines at 7.2/10.

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
New Braunfels
Kerrville
Boerne
Schertz
Pleasanton

Why use momondo?

Why should I use momondo to find a flight deal from Philadelphia to San Antonio?

It is quick and easy to find Philadelphia to San Antonio flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Antonio that suits you.

Can I find flights from Philadelphia to San Antonio with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Philadelphia to San Antonio flights to just show those with flexible booking policies.

How can momondo help me find flights from Philadelphia to San Antonio?

Once all potential Philadelphia to San Antonio flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Philadelphia to San Antonio right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Philadelphia to San Antonio now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Antonio and let you know when they change.

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