What is the cheapest airline that flies from San Antonio to Philadelphia?

Frontier and Spirit Airlines are the most popular carriers operating from San Antonio to Philadelphia

What airlines fly to Philadelphia?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Philadelphia from San Antonio according to our data. American Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 7 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

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?

As of December 2025, there are 6 operators available to choose from 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.

$68 Cheap Flights from San Antonio to Philadelphia in 2025/26

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Find the cheapest flights from San Antonio to Philadelphia

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 am - 11:50 pm

SAT

PHL

16h 20m2 stops

6:00 am - 11:52 pm

PHL

SAT

18h 52m2 stops

$152Spirit Airlines

Tue, Jan 13 - Tue, Jan 20

6:30 am - 11:50 pm

SAT

PHL

16h 20m2 stops

6:00 am - 11:52 pm

PHL

SAT

18h 52m2 stops

$158Spirit Airlines

Tue, Jan 13 - Tue, Jan 20

10:35 am - 8:01 pm

SAT

PHL

8h 26m1 stop

8:20 am - 11:52 pm

PHL

SAT

16h 32m2 stops

$162Spirit Airlines

Sat, Jan 24 - Mon, Jan 26

10:35 am - 8:47 am

SAT

PHL

21h 12m1 stop

6:11 pm - 9:40 am

PHL

SAT

16h 29m1 stop

$164Spirit Airlines

Fri, Jan 16 - Sat, Jan 17

10:35 am - 8:01 pm

SAT

PHL

8h 26m1 stop

5:30 am - 5:03 pm

PHL

SAT

12h 33m1 stop

$165Multiple Airlines

Sat, Jan 24 - Mon, Jan 26

10:35 am - 8:01 pm

SAT

PHL

8h 26m1 stop

6:11 pm - 9:40 am

PHL

SAT

16h 29m1 stop

$168Spirit Airlines

Thu, Jan 29 - Sun, Feb 1

7:14 pm - 8:37 am

SAT

PHL

12h 23m1 stop

4:08 pm - 11:52 pm

PHL

SAT

8h 44m1 stop

$170Multiple Airlines

Thu, Jan 8 - Tue, Jan 13

10:26 am - 8:50 am

SAT

PHL

21h 24m1 stop

7:59 pm - 9:30 am

PHL

SAT

14h 31m1 stop

$171Multiple Airlines

Wed, Feb 18 - Tue, Feb 24

6:30 am - 8:37 pm

SAT

PHL

13h 07m1 stop

1:40 pm - 9:40 am

PHL

SAT

21h 00m1 stop

$175Multiple Airlines

Wed, Jan 14 - Wed, Jan 21

6:30 am - 8:37 pm

SAT

PHL

13h 07m1 stop

1:40 pm - 9:40 am

PHL

SAT

21h 00m1 stop

$176Multiple Airlines

Wed, Jan 14 - Wed, Jan 21

Spirit Airlines flights from San Antonio to Philadelphia

Our best Spirit Airlines deals on San Antonio to Philadelphia flight tickets

Spirit Airlines

Jan 13

SAT6:30 amSan Antonio

16h 20m

2 stops

PHL11:50 pmPhiladelphia

Jan 20

PHL6:00 amPhiladelphia

18h 52m

2 stops

SAT11:52 pmSan Antonio

$152

Find similar

Spirit Airlines

Jan 13

SAT6:30 amSan Antonio

16h 20m

2 stops

PHL11:50 pmPhiladelphia

Jan 20

PHL6:00 amPhiladelphia

18h 52m

2 stops

SAT11:52 pmSan Antonio

$158

Find similar

Spirit Airlines

Jan 24

SAT10:35 amSan Antonio

8h 26m

1 stop

PHL8:01 pmPhiladelphia

Jan 26

PHL8:20 amPhiladelphia

16h 32m

2 stops

SAT11:52 pmSan Antonio

$162

Find similar

Frontier flights from San Antonio to Philadelphia

Our best Frontier deals on San Antonio to Philadelphia flight tickets

Frontier

Jan 2

SAT12:18 pmSan Antonio

16h 13m

1 stop

PHL5:31 amPhiladelphia

Jan 4

PHL8:36 pmPhiladelphia

15h 45m

1 stop

SAT11:21 amSan Antonio

$239

Find similar

Frontier

Jan 23

SAT6:13 pmSan Antonio

5h 39m

1 stop

PHL12:52 amPhiladelphia

Jan 25

PHL5:30 amPhiladelphia

12h 33m

1 stop

SAT5:03 pmSan Antonio

$252

Find similar

Frontier

Dec 25

SAT2:09 pmSan Antonio

14h 22m

1 stop

PHL5:31 amPhiladelphia

Jan 3

PHL8:36 pmPhiladelphia

28h 41m

1 stop

SAT12:17 amSan Antonio

$253

Find similar

momondo Fare Finder

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

Tue 1/13

6:30 am-11:50 pm

2 stops16h 20m

Philadelphia

Tue 1/20

6:00 am-11:52 pm

2 stops18h 52m

$152

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Tue 1/13

6:30 am-11:50 pm

2 stops16h 20m

Philadelphia

Tue 1/20

6:00 am-11:52 pm

2 stops18h 52m

$158

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Sat 1/24

10:35 am-8:01 pm

1 stop8h 26m

Philadelphia

Mon 1/26

8:20 am-11:52 pm

2 stops16h 32m

$162

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Fri 1/16

10:35 am-8:47 am

1 stop21h 12m

Philadelphia

Sat 1/17

6:11 pm-9:40 am

1 stop16h 29m

$164

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Sat 1/24

10:35 am-8:01 pm

1 stop8h 26m

Philadelphia

Mon 1/26

5:30 am-5:03 pm

1 stop12h 33m

$165

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 1/29

10:35 am-8:01 pm

1 stop8h 26m

Philadelphia

Sun 2/1

6:11 pm-9:40 am

1 stop16h 29m

$168

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 1/8

7:14 pm-8:37 am

1 stop12h 23m

Philadelphia

Tue 1/13

4:08 pm-11:52 pm

1 stop8h 44m

$170

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Wed 2/18

10:26 am-8:50 am

1 stop21h 24m

Philadelphia

Tue 2/24

7:59 pm-9:30 am

1 stop14h 31m

$171

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Wed 1/14

6:30 am-8:37 pm

1 stop13h 07m

Philadelphia

Wed 1/21

1:40 pm-9:40 am

1 stop21h 00m

$175

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Wed 1/14

6:30 am-8:37 pm

1 stop13h 07m

Philadelphia

Wed 1/21

1:40 pm-9:40 am

1 stop21h 00m

$176

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from San Antonio is in September. Flight prices, which tend to average around $369, are often lower during this time because this is during the off-season. The month of December is another great option to travel to Philadelphia, with average flight prices from San Antonio averaging around $382.

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 $476. On the other hand, Monday 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 $1,225.

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 $961.

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 $424 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 $312 on momondo.

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

There are 3 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 December 2025, prices for San Antonio to Philadelphia flights are approximately 35% 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

Fastest flight time	3h 44m
Direct flights	Mon, Tue, Thu, Sat and Sun
Airports in Philadelphia	1 airport

The fastest flight from San Antonio to Philadelphia takes 3h 44m

Direct flights go from San Antonio to Philadelphia on Monday, Tuesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.

There is 1 airport in Philadelphia. From San Antonio there are direct flights to 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 3h 44m, 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?
As of December 2025, there are 6 operators available to choose from 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?
Based on momondo bookings for flights between San Antonio and Philadelphia, the leading plane model is Airbus A319, making up 60.53% of the total bookings. Other popular models include Boeing 777 with 5.26%, Airbus A321neo with 5.26%, and Airbus A220-300 with 5.26%.
What is the most popular airline from San Antonio to Philadelphia?
Based on momondo bookings for flights between San Antonio and Philadelphia, the leading airline is American Airlines, making up 51% of the total bookings. Other popular airlines include Southwest with 19%, Delta with 12%, and Frontier with 7%.

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
Frontier	PriceFrom $142	Free Cancellation	Rating 5.8 3,082 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $169	Free Cancellation	Rating 6.3 8,188 reviews	Search Spirit Airlines flights
Delta	PriceFrom $236	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
Southwest	PriceFrom $296	Free Cancellation	Rating 7.9 4,250 reviews	Search Southwest flights
United Airlines	PriceFrom $316	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
American Airlines	PriceFrom $337	Free Cancellation	Rating 7.2 11,049 reviews	Search American Airlines flights

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Newark

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Essington

Vineland

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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.