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Cheap flights from San Antonio to Philadelphia from $99

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 5/20. 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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:54 pm - 5:37 am
SAT
-
PHL
8h 43m
1 stop
Frontier Logo
8:35 pm - 6:59 pm
PHL
-
SAT
23h 24m
1 stop
$205Frontier
Wed, May 20 - Wed, May 27
Frontier Logo
7:54 pm - 5:37 am
SAT
-
PHL
8h 43m
1 stop
Frontier Logo
10:40 am - 8:14 pm
PHL
-
SAT
10h 34m
1 stop
$210Frontier
Tue, May 26 - Sat, May 30
Frontier Logo
7:54 pm - 5:37 am
SAT
-
PHL
8h 43m
1 stop
Frontier Logo
11:00 am - 8:11 pm
PHL
-
SAT
10h 11m
1 stop
$224Frontier
Sun, Jun 7 - Sat, Jun 13
Frontier Logo
7:51 pm - 11:47 am
SAT
-
PHL
14h 56m
1 stop
Frontier Logo
11:00 am - 8:11 pm
PHL
-
SAT
10h 11m
1 stop
$225Frontier
Sat, Jun 13 - Tue, Jun 16
Frontier Logo
7:54 pm - 5:37 am
SAT
-
PHL
8h 43m
1 stop
Frontier Logo
8:35 pm - 6:59 pm
PHL
-
SAT
23h 24m
1 stop
$230Frontier
Sat, May 23 - Fri, May 29
Frontier Logo
8:56 pm - 6:27 am
SAT
-
PHL
8h 31m
1 stop
Frontier Logo
11:06 am - 8:14 pm
PHL
-
SAT
10h 08m
1 stop
$232Frontier
Tue, Jun 30 - Wed, Jul 8
Multiple Airlines Logo
7:07 pm - 9:25 am
SAT
-
PHL
13h 18m
1 stop
Multiple Airlines Logo
7:06 pm - 8:11 pm
PHL
-
SAT
26h 05m
1 stop
$234Multiple Airlines
Thu, Jun 4 - Tue, Jun 9
Frontier Logo
7:51 pm - 11:47 am
SAT
-
PHL
14h 56m
1 stop
Frontier Logo
12:42 pm - 6:56 pm
PHL
-
SAT
7h 14m
1 stop
$235Frontier
Wed, Aug 19 - Mon, Aug 24
Frontier Logo
7:51 pm - 5:39 am
SAT
-
PHL
8h 48m
1 stop
Frontier Logo
12:44 pm - 6:54 pm
PHL
-
SAT
7h 10m
1 stop
$238Frontier
Thu, Aug 13 - Sat, Aug 15
Multiple Airlines Logo
7:07 pm - 9:25 am
SAT
-
PHL
13h 18m
1 stop
Multiple Airlines Logo
8:35 pm - 6:59 pm
PHL
-
SAT
23h 24m
1 stop
$239Multiple Airlines
Thu, Jun 4 - Fri, Jun 5

Frontier flights from San Antonio to Philadelphia

Our best Frontier deals on San Antonio to Philadelphia flight tickets
Frontier
May 20
SAT7:54 pmSan Antonio
8h 43m
1 stop
PHL5:37 amPhiladelphia
May 27
PHL8:35 pmPhiladelphia
23h 24m
1 stop
SAT6:59 pmSan Antonio
$205
Frontier
May 26
SAT7:54 pmSan Antonio
8h 43m
1 stop
PHL5:37 amPhiladelphia
May 30
PHL10:40 amPhiladelphia
10h 34m
1 stop
SAT8:14 pmSan Antonio
$210
Frontier
Jun 7
SAT7:54 pmSan Antonio
8h 43m
1 stop
PHL5:37 amPhiladelphia
Jun 13
PHL11:00 amPhiladelphia
10h 11m
1 stop
SAT8:11 pmSan Antonio
$224

Southwest flights from San Antonio to Philadelphia

Our best Southwest deals on San Antonio to Philadelphia flight tickets
Southwest
May 6
SAT3:50 pmSan Antonio
5h 10m
1 stop
PHL10:00 pmPhiladelphia
May 7
PHL1:35 pmPhiladelphia
7h 05m
1 stop
SAT7:40 pmSan Antonio
$571
Southwest
May 6
SAT8:20 amSan Antonio
7h 30m
2 stops
PHL4:50 pmPhiladelphia
May 7
PHL1:35 pmPhiladelphia
7h 05m
1 stop
SAT7:40 pmSan Antonio
$576
Southwest
May 6
SAT8:20 amSan Antonio
7h 30m
2 stops
PHL4:50 pmPhiladelphia
May 8
PHL6:10 amPhiladelphia
7h 15m
2 stops
SAT12:25 pmSan Antonio
$581

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 May 5, 2026.
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 - PHL

SATPHL

San Antonio

Wed 5/20

7:54 pm-5:37 am

1 stop8h 43m

Philadelphia

Wed 5/27

8:35 pm-6:59 pm

1 stop23h 24m

$205

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Tue 5/26

7:54 pm-5:37 am

1 stop8h 43m

Philadelphia

Sat 5/30

10:40 am-8:14 pm

1 stop10h 34m

$210

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Sun 6/7

7:54 pm-5:37 am

1 stop8h 43m

Philadelphia

Sat 6/13

11:00 am-8:11 pm

1 stop10h 11m

$224

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Sat 6/13

7:51 pm-11:47 am

1 stop14h 56m

Philadelphia

Tue 6/16

11:00 am-8:11 pm

1 stop10h 11m

$225

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Sat 5/23

7:54 pm-5:37 am

1 stop8h 43m

Philadelphia

Fri 5/29

8:35 pm-6:59 pm

1 stop23h 24m

$230

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Tue 6/30

8:56 pm-6:27 am

1 stop8h 31m

Philadelphia

Wed 7/8

11:06 am-8:14 pm

1 stop10h 08m

$232

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 6/4

7:07 pm-9:25 am

1 stop13h 18m

Philadelphia

Tue 6/9

7:06 pm-8:11 pm

1 stop26h 05m

$234

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Wed 8/19

7:51 pm-11:47 am

1 stop14h 56m

Philadelphia

Mon 8/24

12:42 pm-6:56 pm

1 stop7h 14m

$235
Quickest round-trip

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 8/13

7:51 pm-5:39 am

1 stop8h 48m

Philadelphia

Sat 8/15

12:44 pm-6:54 pm

1 stop7h 10m

$238

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 6/4

7:07 pm-9:25 am

1 stop13h 18m

Philadelphia

Fri 6/5

8:35 pm-6:59 pm

1 stop23h 24m

$239

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

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 $345, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Philadelphia, with average flight prices from San Antonio averaging around $369.

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 $475. 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 $1,200.

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 $499. 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 $1,316.

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 $430 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 $308 on momondo.

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

As of May 2026, prices for San Antonio to Philadelphia flights are approximately 7% 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

$233

Fastest flight time

3h 35m

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 $233. The best round-trip flight deal from San Antonio to Philadelphia found on momondo in the last 72 hours is $473.
The fastest flight from San Antonio to Philadelphia takes 3h 35m
Direct flights go from San Antonio to Philadelphia every day.
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 3h 35m, 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
5.6
2,964 reviews
Search Frontier flights
United AirlinesPriceFrom $194Free CancellationRating
7.4
9,684 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $204Free CancellationRating
6.3
8,638 reviews
Search Spirit Airlines flights
SouthwestPriceFrom $243Free CancellationRating
7.9
4,305 reviews
Search Southwest flights
American AirlinesPriceFrom $335Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights
DeltaPriceFrom $354Free CancellationRating
7.9
8,459 reviews
Search Delta flights

  • American Airlines Flights From San Antonio to Philadelphia

    American Airlines flight deals from San Antonio to Philadelphia start from $335 round-trip. Over the 7 American Airlines flights for this route in a normal week, average airfare is usually $471 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
Rehoboth Beach
Cape May
Wildwood Crest
Ocean City
Cherry Hill
King of Prussia
Newark
Dewey Beach
Reading
Avalon
Dover
North Wildwood
Lewes
Stone Harbor
New Castle
Essington
Vineland
Pottstown
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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