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Cheap flights from San Antonio to Philadelphia from $91

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Antonio to Philadelphia departing on 10/23. 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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Find the cheapest flights from San Antonio to Philadelphia (SAT-PHL)

Cheap round-trip flights

Frontier Logo
5:40 pm - 12:57 amSAT-PHL
6h 17m1 stop
Frontier Logo
5:15 am - 10:48 amPHL-SAT
6h 33m1 stop
$143Frontier
Find Deal
lun., sep. 8 - jue., sep. 11
Frontier Logo
11:33 am - 12:57 amSAT-PHL
12h 24m1 stop
Frontier Logo
5:15 am - 10:48 amPHL-SAT
6h 33m1 stop
$144Frontier
Find Deal
jue., sep. 25 - jue., oct. 2
Frontier Logo
8:26 pm - 5:19 amSAT-PHL
7h 53m1 stop
Frontier Logo
5:20 am - 4:50 pmPHL-SAT
12h 30m1 stop
$153Frontier
Find Deal
jue., oct. 23 - lun., oct. 27
Frontier Logo
8:21 pm - 5:19 amSAT-PHL
7h 58m1 stop
Frontier Logo
6:42 am - 7:35 pmPHL-SAT
13h 53m1 stop
$164Frontier
Find Deal
vie., oct. 10 - vie., oct. 17
Frontier Logo
5:40 pm - 12:59 amSAT-PHL
6h 19m1 stop
Frontier Logo
6:42 am - 7:35 pmPHL-SAT
13h 53m1 stop
$182Frontier
Find Deal
vie., oct. 3 - vie., oct. 10
Frontier Logo
11:33 am - 12:59 amSAT-PHL
12h 26m1 stop
Frontier Logo
5:15 am - 4:30 pmPHL-SAT
12h 15m1 stop
$184Frontier
Find Deal
jue., oct. 2 - lun., oct. 6
Logo
5:40 pm - 12:57 amSAT-PHL
6h 17m1 stop
Logo
5:30 am - 1:49 pmPHL-SAT
9h 19m1 stop
$197
Find Deal
vie., sep. 26 - dom., sep. 28
Spirit Airlines Logo
2:54 pm - 11:59 pmSAT-PHL
8h 05m1 stop
Spirit Airlines Logo
5:30 am - 1:49 pmPHL-SAT
9h 19m1 stop
$207Spirit Airlines
Find Deal
jue., sep. 25 - dom., sep. 28
Spirit Airlines Logo
2:54 pm - 11:59 pmSAT-PHL
8h 05m1 stop
Spirit Airlines Logo
5:30 am - 1:49 pmPHL-SAT
9h 19m1 stop
$209Spirit Airlines
Find Deal
jue., sep. 25 - dom., sep. 28
Spirit Airlines Logo
5:00 pm - 11:47 pmSAT-PHL
5h 47m1 stop
Spirit Airlines Logo
7:54 pm - 6:18 pmPHL-SAT
23h 24m1 stop
$237Spirit Airlines
Find Deal
vie., oct. 17 - sáb., oct. 18

Frontier flights from San Antonio to Philadelphia

Our best Frontier deals on San Antonio to Philadelphia flight tickets
Frontier
Sep 8
SAT5:40 pmSan Antonio
6h 17m
1 stop
PHL12:57 amPhiladelphia
Sep 12
PHL5:15 amPhiladelphia
12h 15m
1 stop
SAT4:30 pmSan Antonio
$143
Find similar
Frontier
Sep 25
SAT11:33 amSan Antonio
12h 24m
1 stop
PHL12:57 amPhiladelphia
Oct 2
PHL5:15 amPhiladelphia
6h 33m
1 stop
SAT10:48 amSan Antonio
$144
Find similar
Frontier
Oct 23
SAT8:26 pmSan Antonio
7h 53m
1 stop
PHL5:19 amPhiladelphia
Oct 27
PHL5:20 amPhiladelphia
12h 30m
1 stop
SAT4:50 pmSan Antonio
$153
Find similar

Spirit Airlines flights from San Antonio to Philadelphia

Our best Spirit Airlines deals on San Antonio to Philadelphia flight tickets
Spirit Airlines
Sep 25
SAT2:54 pmSan Antonio
8h 05m
1 stop
PHL11:59 pmPhiladelphia
Sep 28
PHL5:30 amPhiladelphia
9h 19m
1 stop
SAT1:49 pmSan Antonio
$207
Find similar
Spirit Airlines
Sep 25
SAT2:54 pmSan Antonio
8h 05m
1 stop
PHL11:59 pmPhiladelphia
Sep 28
PHL5:30 amPhiladelphia
9h 19m
1 stop
SAT1:49 pmSan Antonio
$209
Find similar
Spirit Airlines
Oct 17
SAT5:00 pmSan Antonio
5h 47m
1 stop
PHL11:47 pmPhiladelphia
Oct 18
PHL7:54 pmPhiladelphia
23h 24m
1 stop
SAT6:18 pmSan Antonio
$237
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Antonio to Philadelphia 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 agosto 26, 2025.
Use the filters below to find and compare flights from San Antonio to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

lun. 9/8

5:40 pm-12:57 am

1 stop6h 17m

Philadelphia

jue. 9/11

5:15 am-10:48 am

1 stop6h 33m

$143

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

jue. 9/25

11:33 am-12:57 am

1 stop12h 24m

Philadelphia

jue. 10/2

5:15 am-10:48 am

1 stop6h 33m

$144

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

jue. 10/23

8:26 pm-5:19 am

1 stop7h 53m

Philadelphia

lun. 10/27

5:20 am-4:50 pm

1 stop12h 30m

$153

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

vie. 10/10

8:21 pm-5:19 am

1 stop7h 58m

Philadelphia

vie. 10/17

6:42 am-7:35 pm

1 stop13h 53m

$164

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

vie. 10/3

5:40 pm-12:59 am

1 stop6h 19m

Philadelphia

vie. 10/10

6:42 am-7:35 pm

1 stop13h 53m

$182

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

jue. 10/2

11:33 am-12:59 am

1 stop12h 26m

Philadelphia

lun. 10/6

5:15 am-4:30 pm

1 stop12h 15m

$184

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

vie. 9/26

5:40 pm-12:57 am

1 stop6h 17m

Philadelphia

dom. 9/28

5:30 am-1:49 pm

1 stop9h 19m

$197

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

jue. 9/25

2:54 pm-11:59 pm

1 stop8h 05m

Philadelphia

dom. 9/28

5:30 am-1:49 pm

1 stop9h 19m

$207

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

jue. 9/25

2:54 pm-11:59 pm

1 stop8h 05m

Philadelphia

dom. 9/28

5:30 am-1:49 pm

1 stop9h 19m

$209

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

vie. 10/17

5:00 pm-11:47 pm

1 stop5h 47m

Philadelphia

sáb. 10/18

7:54 pm-6:18 pm

1 stop23h 24m

$237

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 Philadelphia from

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

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 cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from San Antonio is in February. Flight prices, which tend to average around $375, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Philadelphia, with average flight prices from San Antonio averaging around $398.

What is the cheapest day to depart on your flight to Philadelphia?

The cheapest day to depart from San Antonio to Philadelphia is on a Saturday. Travelers who choose to depart for Philadelphia on a Saturday will often find tickets for as low as $517. On the other hand, Sunday is the most expensive day to depart from San Antonio because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,343.

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

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from San Antonio to Philadelphia in the evening for as low as $280. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is at noon when prices are around $778.

What is the cheapest San Antonio to Philadelphia flight route?

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

How far in advance should I book a flight to Philadelphia?

You are more likely to see cheaper flights to Philadelphia from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $440 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from San Antonio for as low as $334 on momondo.

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

There are 4 cabin classes available to choose from on San Antonio to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

As of August 2025, prices for San Antonio to Philadelphia flights are approximately 21% more expensive when compared to flights at the same time last year.

When to book flights from San Antonio to Philadelphia

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

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

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

Best Price Found

$178

Fastest flight time

3h 29m

Direct flights

Every day

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from San Antonio in the past 72 hours is $178. The best round-trip flight deal from San Antonio to Philadelphia found on momondo in the last 72 hours is $320.
The fastest flight from San Antonio to Philadelphia takes 3h 29m
Direct flights go from San Antonio to Philadelphia every day.
There is 1 airport near Philadelphia: Philadelphia (PHL)
Search flight deals

  • How far is San Antonio to Philadelphia by plane?

    San Antonio and Philadelphia are 1504.8 mi apart from one another. Flights usually cover this in 5h 47m, depending on flying conditions and air traffic around both airports.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Antonio Airport to Philadelphia Airport.

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

    The necessary travel and health documents for your Philadelphia Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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

Best airlines flying from San Antonio to Philadelphia

Compare and see reviews for airlines that fly from San Antonio to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $138Free CancellationRating
5.8
3,200 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $169Free CancellationRating
6.3
8,031 reviews
Search Spirit Airlines flights
DeltaPriceFrom $255Free CancellationRating
7.9
7,979 reviews
Search Delta flights
SouthwestPriceFrom $296Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $308Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $316Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights

  • American Airlines Flights From San Antonio to Philadelphia

    American Airlines flight deals from San Antonio to Philadelphia start from $308 round-trip. Over the 3 American Airlines flights for this route in a normal week, average airfare is usually $478 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Cape May
Rehoboth Beach
Ocean City
Wildwood Crest
King of Prussia
Reading
Dewey Beach
Newark
North Wildwood
Cherry Hill
Dover
Lewes
Avalon
Stone Harbor
Vineland
Essington
Exton
Pottstown
New Castle

Why use momondo?

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

It is quick and easy to find San Antonio to Philadelphia 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 Philadelphia that suits you.

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

Flights from San Antonio to Philadelphia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential San Antonio to Philadelphia 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 San Antonio to Philadelphia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for San Antonio to Philadelphia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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