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

Frontier is the most popular carrier operating from San Antonio to Philadelphia

Which layover airport has the shortest travel time from San Antonio to Philadelphia?

Flights connecting via St. Louis (STL) have the shortest average one-way travel time: 5h 10m.

Which layover airport has the shortest connection time from San Antonio to Philadelphia?

St. Louis (STL) has the shortest average layover time for this route: 0h 50m.

What airlines fly to Philadelphia?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Philadelphia from San Antonio according to our data. United Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 6 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from San Antonio to Philadelphia?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $218.

Which airport is the most popular layover for flights between San Antonio and Philadelphia?

Dallas (DFW) was the most common stop: 22% of momondo users choosing 1-stop flights on this route connected there.

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 November 2026, there are 5 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.

$104 Cheap Flights from San Antonio to Philadelphia in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Antonio to Philadelphia

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:03 pm - 6:32 pmSAT San Antonio-PHL Philadelphia

21h 29m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson

4:16 pm - 8:45 amPHL Philadelphia-SAT San Antonio

17h 29m1 stop Raleigh-Durham

$252Multiple Airlines

Wed, Dec 2 - Wed, Dec 9

8:03 pm - 1:07 pmSAT San Antonio-PHL Philadelphia

16h 04m2 stops Las Vegas Harry Reid Intl Atlanta Hartsfield-Jackson

11:28 am - 8:45 amPHL Philadelphia-SAT San Antonio

22h 17m1 stop Raleigh-Durham

$252Multiple Airlines

Wed, Dec 2 - Wed, Dec 9

12:32 pm - 12:52 amSAT San Antonio-PHL Philadelphia

11h 20m1 stop Orlando

6:31 pm - 11:40 amPHL Philadelphia-SAT San Antonio

18h 09m2 stops Atlanta Hartsfield-Jackson Orlando

$253Frontier

Mon, Dec 7 - Tue, Dec 15

12:32 pm - 12:52 amSAT San Antonio-PHL Philadelphia

11h 20m1 stop Orlando

4:31 pm - 11:40 amPHL Philadelphia-SAT San Antonio

20h 09m2 stops Atlanta Hartsfield-Jackson Orlando

$253Frontier

Mon, Dec 7 - Tue, Dec 15

5:05 pm - 12:52 amSAT San Antonio-PHL Philadelphia

6h 47m1 stop Atlanta Hartsfield-Jackson

5:19 pm - 12:35 amPHL Philadelphia-SAT San Antonio

8h 16m1 stop Atlanta Hartsfield-Jackson

$259Delta

Sat, Dec 12 - Mon, Dec 14

4:40 pm - 12:52 amSAT San Antonio-PHL Philadelphia

7h 12m1 stop Atlanta Hartsfield-Jackson

6:10 pm - 11:35 pmPHL Philadelphia-SAT San Antonio

6h 25m1 stop Atlanta Hartsfield-Jackson

$259Delta

Wed, Dec 9 - Sat, Dec 12

12:57 pm - 9:31 pmSAT San Antonio-PHL Philadelphia

7h 34m1 stop Dallas/Fort Worth

5:05 pm - 10:57 pmPHL Philadelphia-SAT San Antonio

6h 52m1 stop Dallas/Fort Worth

$417American Airlines

Sat, Dec 12 - Mon, Dec 14

5:00 am - 11:28 amSAT San Antonio-PHL Philadelphia

5h 28m1 stop Dallas/Fort Worth

12:34 pm - 7:19 pmPHL Philadelphia-SAT San Antonio

7h 45m1 stop Dallas/Fort Worth

$417American Airlines

Sat, Jan 16 - Tue, Jan 19

1:40 pm - 9:39 pmSAT San Antonio-PHL Philadelphia

6h 59m1 stop Chicago O'Hare Intl

5:41 pm - 11:04 pmPHL Philadelphia-SAT San Antonio

6h 23m1 stop Houston George Bush Intcntl

$417United Airlines

Tue, Dec 1 - Mon, Dec 7

4:13 pm - 10:59 pmSAT San Antonio-PHL Philadelphia

5h 46m1 stop Houston George Bush Intcntl

6:24 am - 3:35 pmPHL Philadelphia-SAT San Antonio

10h 11m2 stops Chicago O'Hare Intl Houston George Bush Intcntl

$422United Airlines

Mon, Dec 21 - Fri, Jan 1

Cheap last minute flights

Enter your travel dates to find the best prices.

5:13 pm - 9:05 pmSAT San Antonio-PHL Philadelphia

26h 52m1 stop Orlando

9:56 pm - 11:40 amPHL Philadelphia-SAT San Antonio

14h 44m1 stop Orlando

$358Frontier

Mon, Nov 9 - Sun, Dec 6

5:13 pm - 12:35 amSAT San Antonio-PHL Philadelphia

6h 22m1 stop Orlando

5:01 am - 11:40 amPHL Philadelphia-SAT San Antonio

7h 39m1 stop Orlando

$364Frontier

Fri, Nov 6 - Mon, Dec 7

9:25 am - 4:24 pmSAT San Antonio-PHL Philadelphia

5h 59m1 stop Raleigh-Durham

7:25 pm - 8:45 amPHL Philadelphia-SAT San Antonio

14h 20m1 stop Raleigh-Durham

$414Multiple Airlines

Thu, Nov 5 - Sat, Nov 7

5:13 pm - 11:16 pmSAT San Antonio-PHL Philadelphia

29h 03m2 stops Orlando Atlanta Hartsfield-Jackson

7:25 pm - 8:45 amPHL Philadelphia-SAT San Antonio

14h 20m1 stop Raleigh-Durham

$443Multiple Airlines

Mon, Nov 9 - Sat, Nov 14

5:55 am - 12:05 pmSAT San Antonio-PHL Philadelphia

5h 10m1 stop Dallas Love Field

5:20 am - 2:15 pmPHL Philadelphia-SAT San Antonio

9h 55m1 stop Denver Intl

$631Southwest

Sat, Nov 7 - Sat, Nov 14

6:05 am - 3:25 pmSAT San Antonio-PHL Philadelphia

8h 20m2 stops Houston Hobby Nashville Intl

5:45 am - 12:40 pmPHL Philadelphia-SAT San Antonio

7h 55m2 stops Nashville Intl Houston Hobby

$641Southwest

Sat, Nov 7 - Sat, Nov 14

1:23 pm - 7:56 pmSAT San Antonio-PHL Philadelphia

5h 33m1 stop Charlotte Douglas

4:46 pm - 9:59 pmPHL Philadelphia-SAT San Antonio

6h 13m1 stop Dallas/Fort Worth

$732American Airlines

Sat, Nov 7 - Mon, Nov 9

6:00 am - 2:55 pmSAT San Antonio-PHL Philadelphia

7h 55m1 stop Dallas/Fort Worth

1:53 pm - 7:43 pmPHL Philadelphia-SAT San Antonio

6h 50m1 stop Charlotte Douglas

$732American Airlines

Sat, Nov 7 - Mon, Nov 9

4:19 pm - 10:57 pmSAT San Antonio-PHL Philadelphia

5h 38m1 stop Houston George Bush Intcntl

4:59 pm - 11:38 pmPHL Philadelphia-SAT San Antonio

7h 39m1 stop Chicago O'Hare Intl

$765United Airlines

Mon, Nov 9 - Wed, Nov 11

7:35 am - 5:47 pmSAT San Antonio-PHL Philadelphia

9h 12m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

4:59 pm - 11:37 pmPHL Philadelphia-SAT San Antonio

7h 38m1 stop Chicago O'Hare Intl

$770United Airlines

Sat, Nov 7 - Mon, Nov 9

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Frontier flights from San Antonio to Philadelphia

Our best Frontier deals on San Antonio to Philadelphia flight tickets

Frontier

Dec 7

SAT12:32 pmSan Antonio

11h 20m

1 stop

PHL12:52 amPhiladelphia

Dec 15

PHL6:31 pmPhiladelphia

18h 09m

2 stops

SAT11:40 amSan Antonio

$253

Frontier

Dec 23

SAT1:27 pmSan Antonio

10h 38m

1 stop

PHL1:05 amPhiladelphia

Dec 29

PHL10:20 pmPhiladelphia

15h 12m

1 stop

SAT12:32 pmSan Antonio

$256

Frontier

Dec 22

SAT8:30 pmSan Antonio

7h 41m

1 stop

PHL5:11 amPhiladelphia

Dec 30

PHL5:01 amPhiladelphia

8h 31m

1 stop

SAT12:32 pmSan Antonio

$257

Southwest flights from San Antonio to Philadelphia

Our best Southwest deals on San Antonio to Philadelphia flight tickets

Southwest

Nov 11

SAT5:50 amSan Antonio

5h 40m

1 stop

PHL12:30 pmPhiladelphia

Nov 18

PHL5:35 amPhiladelphia

6h 00m

1 stop

SAT10:35 amSan Antonio

$631

Southwest

Nov 11

SAT5:50 amSan Antonio

5h 40m

1 stop

PHL12:30 pmPhiladelphia

Nov 18

PHL2:55 pmPhiladelphia

7h 45m

2 stops

SAT9:40 pmSan Antonio

$636

Southwest

Nov 7

SAT6:05 amSan Antonio

8h 20m

2 stops

PHL3:25 pmPhiladelphia

Nov 14

PHL5:45 amPhiladelphia

7h 55m

2 stops

SAT12:40 pmSan Antonio

$641

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

Cheapest round-trip

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Wed 12/2

8:03 pm-6:32 pm

2 stops21h 29m

Philadelphia

Wed 12/9

4:16 pm-8:45 am

1 stop17h 29m

$252

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Wed 12/2

8:03 pm-1:07 pm

2 stops16h 04m

Philadelphia

Wed 12/9

11:28 am-8:45 am

1 stop22h 17m

$252

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Mon 12/7

12:32 pm-12:52 am

1 stop11h 20m

Philadelphia

Tue 12/15

6:31 pm-11:40 am

2 stops18h 09m

$253

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Mon 12/7

12:32 pm-12:52 am

1 stop11h 20m

Philadelphia

Tue 12/15

4:31 pm-11:40 am

2 stops20h 09m

$253

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Sat 12/12

5:05 pm-12:52 am

1 stop6h 47m

Philadelphia

Mon 12/14

5:19 pm-12:35 am

1 stop8h 16m

$259

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Wed 12/9

4:40 pm-12:52 am

1 stop7h 12m

Philadelphia

Sat 12/12

6:10 pm-11:35 pm

1 stop6h 25m

$259

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Sat 12/12

12:57 pm-9:31 pm

1 stop7h 34m

Philadelphia

Mon 12/14

5:05 pm-10:57 pm

1 stop6h 52m

$417

Quickest round-trip

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Sat 1/16

5:00 am-11:28 am

1 stop5h 28m

Philadelphia

Tue 1/19

12:34 pm-7:19 pm

1 stop7h 45m

$417

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Tue 12/1

1:40 pm-9:39 pm

1 stop6h 59m

Philadelphia

Mon 12/7

5:41 pm-11:04 pm

1 stop6h 23m

$417

San AntonioPhiladelphia

SAT San Antonio - PHL Philadelphia

SATPHL

San Antonio

Mon 12/21

4:13 pm-10:59 pm

1 stop5h 46m

Philadelphia

Fri 1/1

6:24 am-3:35 pm

2 stops10h 11m

$422

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

Layovers

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

Prices are currently low for flights on this route.

Typical prices usually range from $372 to $604.
The lowest price recently found on this route was $252.

What is the cheapest month to fly to Philadelphia?

The cheapest month to fly to Philadelphia from San Antonio is in April. Flight prices, which tend to average around $341, are often lower during this time because this is during the off-season. The month of August is another great option to travel to Philadelphia, with average flight prices from San Antonio averaging around $371.

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 Tuesday. Travelers who choose to depart for Philadelphia on a Tuesday will often find tickets for as low as $471. 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 $864.

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 morning. momondo users have found flights departing from San Antonio to Philadelphia in the morning for as low as $551. 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 $1,192.

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 from San Antonio 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 $451 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 $302 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 November 2026, prices for San Antonio to Philadelphia flights are approximately 2% cheaper 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	$104
Fastest flight time	5h 38m
Direct flights	Fri
Airports in Philadelphia	1 airport

The best one-way flight to Philadelphia from San Antonio in the past 72 hours is $104. The best round-trip flight deal from San Antonio to Philadelphia found on momondo in the last 72 hours is $252.

The fastest flight from San Antonio to Philadelphia takes 5h 38m

Direct flights go from San Antonio to Philadelphia on Friday. 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

Frequently asked questions about flying from San Antonio to Philadelphia

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 38m, 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 November 2026, there are 5 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 54.79% of the total bookings. Other popular models include Airbus A320-100/200 with 13.70%, Airbus A220-300 with 10.96%, and Boeing 737 MAX 8 with 4.11%.
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 47% of the total bookings. Other popular airlines include Southwest with 27%, Frontier with 11%, and Delta with 9%.

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 $141	Free Cancellation	Rating 5.5 2,512 reviews	Search Frontier flights
United Airlines	PriceFrom $194	Free Cancellation	Rating 7.3 10,460 reviews	Search United Airlines flights
Southwest	PriceFrom $221	Free Cancellation	Rating 8.0 4,215 reviews	Search Southwest flights
Delta	PriceFrom $236	Free Cancellation	Rating 7.8 8,699 reviews	Search Delta flights
American Airlines	PriceFrom $247	Free Cancellation	Rating 7.0 12,228 reviews	Search American Airlines flights

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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.