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Cheap flights from San Antonio to Philadelphia from $56

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 1/22. 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

Enter your travel dates to find the best prices.
Spirit Airlines Logo
10:26 am - 8:44 am
SAT
-
PHL
21h 18m1 stop
Spirit Airlines Logo
6:16 pm - 9:30 am
PHL
-
SAT
16h 14m1 stop
$137Spirit Airlines
Mon, Feb 23 - Wed, Feb 25
Multiple Airlines Logo
10:35 am - 11:50 pm
SAT
-
PHL
12h 15m1 stop
Multiple Airlines Logo
3:34 pm - 9:30 am
PHL
-
SAT
18h 56m1 stop
$141Multiple Airlines
Thu, Jan 29 - Sun, Feb 1
Spirit Airlines Logo
10:35 am - 11:50 pm
SAT
-
PHL
12h 15m1 stop
Spirit Airlines Logo
6:11 pm - 9:30 am
PHL
-
SAT
16h 19m1 stop
$151Spirit Airlines
Thu, Jan 29 - Sat, Jan 31
Spirit Airlines Logo
6:30 am - 11:50 pm
SAT
-
PHL
16h 20m2 stops
Spirit Airlines Logo
6:00 am - 11:52 pm
PHL
-
SAT
18h 52m2 stops
$158Spirit Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
10:35 am - 11:50 pm
SAT
-
PHL
12h 15m1 stop
Multiple Airlines Logo
3:25 pm - 9:30 am
PHL
-
SAT
19h 05m1 stop
$168Multiple Airlines
Sat, Feb 7 - Sun, Feb 8
Multiple Airlines Logo
1:57 pm - 7:32 am
SAT
-
PHL
16h 35m1 stop
Multiple Airlines Logo
5:51 pm - 9:30 am
PHL
-
SAT
16h 39m1 stop
$169Multiple Airlines
Thu, Feb 19 - Sun, Feb 22
Multiple Airlines Logo
1:57 pm - 10:27 am
SAT
-
PHL
19h 30m2 stops
Multiple Airlines Logo
6:16 pm - 9:30 am
PHL
-
SAT
16h 14m1 stop
$171Multiple Airlines
Mon, Feb 23 - Wed, Feb 25
Multiple Airlines Logo
7:14 pm - 8:37 am
SAT
-
PHL
12h 23m1 stop
Multiple Airlines Logo
3:56 pm - 11:52 pm
PHL
-
SAT
8h 56m1 stop
$173Multiple Airlines
Thu, Jan 8 - Mon, Jan 12
Spirit Airlines Logo
10:35 am - 11:14 am
SAT
-
PHL
23h 39m1 stop
Spirit Airlines Logo
8:43 pm - 11:52 pm
PHL
-
SAT
28h 09m1 stop
$176Spirit Airlines
Mon, Jan 26 - Mon, Feb 2
Multiple Airlines Logo
7:14 pm - 8:37 am
SAT
-
PHL
12h 23m1 stop
Multiple Airlines Logo
6:11 pm - 11:52 pm
PHL
-
SAT
30h 41m2 stops
$180Multiple Airlines
Thu, Jan 8 - Mon, Jan 12

Spirit Airlines flights from San Antonio to Philadelphia

Our best Spirit Airlines deals on San Antonio to Philadelphia flight tickets
Spirit Airlines
Feb 23
SAT10:26 amSan Antonio
21h 18m
1 stop
PHL8:44 amPhiladelphia
Feb 25
PHL6:16 pmPhiladelphia
16h 14m
1 stop
SAT9:30 amSan Antonio
$137
Find similar
Spirit Airlines
Jan 29
SAT10:35 amSan Antonio
12h 15m
1 stop
PHL11:50 pmPhiladelphia
Jan 31
PHL6:11 pmPhiladelphia
16h 19m
1 stop
SAT9:30 amSan Antonio
$151
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

Frontier flights from San Antonio to Philadelphia

Our best Frontier deals on San Antonio to Philadelphia flight tickets
Frontier
Dec 31
SAT7:11 pmSan Antonio
28h 29m
1 stop
PHL12:40 amPhiladelphia
Jan 4
PHL8:36 pmPhiladelphia
15h 45m
1 stop
SAT11:21 amSan Antonio
$235
Find similar
Frontier
Feb 19
SAT1:57 pmSan Antonio
16h 35m
1 stop
PHL7:32 amPhiladelphia
Feb 22
PHL5:42 pmPhiladelphia
15h 53m
2 stops
SAT8:35 amSan Antonio
$236
Find similar
Frontier
Jan 5
SAT5:56 pmSan Antonio
5h 45m
1 stop
PHL12:41 amPhiladelphia
Jan 8
PHL9:47 amPhiladelphia
9h 31m
1 stop
SAT6:18 pmSan Antonio
$249
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 December 23, 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

Mon 2/23

10:26 am-8:44 am

1 stop21h 18m

Philadelphia

Wed 2/25

6:16 pm-9:30 am

1 stop16h 14m

$137

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 1/29

10:35 am-11:50 pm

1 stop12h 15m

Philadelphia

Sun 2/1

3:34 pm-9:30 am

1 stop18h 56m

$141

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 1/29

10:35 am-11:50 pm

1 stop12h 15m

Philadelphia

Sat 1/31

6:11 pm-9:30 am

1 stop16h 19m

$151

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 2/7

10:35 am-11:50 pm

1 stop12h 15m

Philadelphia

Sun 2/8

3:25 pm-9:30 am

1 stop19h 05m

$168

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 2/19

1:57 pm-7:32 am

1 stop16h 35m

Philadelphia

Sun 2/22

5:51 pm-9:30 am

1 stop16h 39m

$169

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Mon 2/23

1:57 pm-10:27 am

2 stops19h 30m

Philadelphia

Wed 2/25

6:16 pm-9:30 am

1 stop16h 14m

$171

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 1/8

7:14 pm-8:37 am

1 stop12h 23m

Philadelphia

Mon 1/12

3:56 pm-11:52 pm

1 stop8h 56m

$173

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Mon 1/26

10:35 am-11:14 am

1 stop23h 39m

Philadelphia

Mon 2/2

8:43 pm-11:52 pm

1 stop28h 09m

$176

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 1/8

7:14 pm-8:37 am

1 stop12h 23m

Philadelphia

Mon 1/12

6:11 pm-11:52 pm

2 stops30h 41m

$180

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 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 October is another great option to travel to Philadelphia, with average flight prices from San Antonio averaging around $384.

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 $1,273.

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 $969.

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 $426 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

Best Price Found

$1,438

Fastest flight time

3h 44m

Direct flights

Mon, Tue, Sat and Sun

Airports in Philadelphia

1 airport
The best flight deal from San Antonio to Philadelphia found on momondo in the last 72 hours is $1,438
The fastest flight from San Antonio to Philadelphia takes 3h 44m
Direct flights go from San Antonio to Philadelphia on Monday, Tuesday, 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?

  • 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 $141Free CancellationRating
5.8
3,074 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $169Free CancellationRating
6.3
8,194 reviews
Search Spirit Airlines flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,014 reviews
Search Delta flights
SouthwestPriceFrom $296Free CancellationRating
8.0
4,253 reviews
Search Southwest flights
United AirlinesPriceFrom $316Free CancellationRating
7.4
9,106 reviews
Search United Airlines flights
American AirlinesPriceFrom $338Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights

Traveling to a place near Philadelphia?

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

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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