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Cheap flights from San Antonio to Philadelphia from $57

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 12/4. 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

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Frontier Logo
9:10 am - 10:00 amSAT-PHL
23h 50m1 stop
Frontier Logo
10:00 pm - 7:55 amPHL-SAT
10h 55m1 stop
$130Frontier
Find Deal
Thu, Dec 11 - Sat, Dec 13
Frontier Logo
5:56 pm - 12:41 amSAT-PHL
5h 45m1 stop
Frontier Logo
10:00 pm - 6:16 pmPHL-SAT
21h 16m1 stop
$141Frontier
Find Deal
Fri, Dec 26 - Tue, Dec 30
Frontier Logo
3:02 pm - 3:16 pmSAT-PHL
23h 14m1 stop
Frontier Logo
8:00 am - 2:07 pmPHL-SAT
7h 07m1 stop
$142Frontier
Find Deal
Fri, Feb 27 - Mon, Mar 2
Frontier Logo
6:45 am - 5:31 amSAT-PHL
21h 46m1 stop
Frontier Logo
10:00 pm - 6:16 pmPHL-SAT
21h 16m1 stop
$144Frontier
Find Deal
Thu, Dec 25 - Tue, Dec 30
Frontier Logo
10:13 am - 3:29 pmSAT-PHL
28h 16m1 stop
Frontier Logo
5:30 am - 4:43 pmPHL-SAT
12h 13m1 stop
$146Frontier
Find Deal
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
10:35 am - 11:50 pmSAT-PHL
12h 15m1 stop
Multiple Airlines Logo
6:01 pm - 7:03 pmPHL-SAT
26h 02m1 stop
$166Multiple Airlines
Find Deal
Fri, Jan 9 - Sun, Jan 11
Frontier Logo
9:10 am - 12:40 amSAT-PHL
14h 30m1 stop
Frontier Logo
4:00 pm - 8:15 amPHL-SAT
17h 15m1 stop
$182Frontier
Find Deal
Thu, Dec 4 - Wed, Dec 10
Multiple Airlines Logo
6:30 am - 9:59 amSAT-PHL
26h 29m1 stop
Multiple Airlines Logo
8:35 pm - 11:52 pmPHL-SAT
28h 17m1 stop
$188Multiple Airlines
Find Deal
Wed, Feb 4 - Mon, Feb 9
Multiple Airlines Logo
2:39 pm - 11:38 pmSAT-PHL
7h 59m1 stop
Multiple Airlines Logo
6:59 pm - 11:50 amPHL-SAT
17h 51m1 stop
$190Multiple Airlines
Find Deal
Wed, Dec 24 - Tue, Jan 6
Multiple Airlines Logo
11:17 am - 11:02 amSAT-PHL
22h 45m2 stops
Multiple Airlines Logo
8:25 pm - 11:52 pmPHL-SAT
28h 27m1 stop
$191Multiple Airlines
Find Deal
Fri, Jan 16 - Tue, Jan 20

Frontier flights from San Antonio to Philadelphia

Our best Frontier deals on San Antonio to Philadelphia flight tickets
Frontier
Dec 11
SAT9:10 amSan Antonio
23h 50m
1 stop
PHL10:00 amPhiladelphia
Dec 13
PHL10:00 pmPhiladelphia
10h 55m
1 stop
SAT7:55 amSan Antonio
$130
Find similar
Frontier
Dec 26
SAT5:56 pmSan Antonio
5h 45m
1 stop
PHL12:41 amPhiladelphia
Dec 30
PHL10:00 pmPhiladelphia
21h 16m
1 stop
SAT6:16 pmSan Antonio
$141
Find similar
Frontier
Feb 27
SAT3:02 pmSan Antonio
23h 14m
1 stop
PHL3:16 pmPhiladelphia
Mar 2
PHL8:00 amPhiladelphia
7h 07m
1 stop
SAT2:07 pmSan Antonio
$142
Find similar

Spirit Airlines flights from San Antonio to Philadelphia

Our best Spirit Airlines deals on San Antonio to Philadelphia flight tickets
Spirit Airlines
Dec 1
SAT7:37 pmSan Antonio
12h 43m
1 stop
PHL9:20 amPhiladelphia
Dec 3
PHL9:48 amPhiladelphia
9h 44m
1 stop
SAT6:32 pmSan Antonio
$215
Find similar
Spirit Airlines
Dec 4
SAT1:55 pmSan Antonio
8h 21m
1 stop
PHL11:16 pmPhiladelphia
Dec 10
PHL4:00 pmPhiladelphia
23h 15m
2 stops
SAT2:15 pmSan Antonio
$241
Find similar
Spirit Airlines
Dec 4
SAT1:55 pmSan Antonio
8h 21m
1 stop
PHL11:16 pmPhiladelphia
Dec 10
PHL5:15 amPhiladelphia
32h 45m
3 stops
SAT1:00 pmSan Antonio
$247
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 November 21, 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

Thu 12/11

9:10 am-10:00 am

1 stop23h 50m

Philadelphia

Sat 12/13

10:00 pm-7:55 am

1 stop10h 55m

$130

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Fri 12/26

5:56 pm-12:41 am

1 stop5h 45m

Philadelphia

Tue 12/30

10:00 pm-6:16 pm

1 stop21h 16m

$141

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Fri 2/27

3:02 pm-3:16 pm

1 stop23h 14m

Philadelphia

Mon 3/2

8:00 am-2:07 pm

1 stop7h 07m

$142

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 12/25

6:45 am-5:31 am

1 stop21h 46m

Philadelphia

Tue 12/30

10:00 pm-6:16 pm

1 stop21h 16m

$144

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 2/26

10:13 am-3:29 pm

1 stop28h 16m

Philadelphia

Mon 3/2

5:30 am-4:43 pm

1 stop12h 13m

$146

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Fri 1/9

10:35 am-11:50 pm

1 stop12h 15m

Philadelphia

Sun 1/11

6:01 pm-7:03 pm

1 stop26h 02m

$166

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 12/4

9:10 am-12:40 am

1 stop14h 30m

Philadelphia

Wed 12/10

4:00 pm-8:15 am

1 stop17h 15m

$182

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Wed 2/4

6:30 am-9:59 am

1 stop26h 29m

Philadelphia

Mon 2/9

8:35 pm-11:52 pm

1 stop28h 17m

$188

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Wed 12/24

2:39 pm-11:38 pm

1 stop7h 59m

Philadelphia

Tue 1/6

6:59 pm-11:50 am

1 stop17h 51m

$190

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Fri 1/16

11:17 am-11:02 am

2 stops22h 45m

Philadelphia

Tue 1/20

8:25 pm-11:52 pm

1 stop28h 27m

$191

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 February is another great option to travel to Philadelphia, with average flight prices from San Antonio averaging around $375.

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 $485. 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 $1,284.

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 $428 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 $310 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 November 2025, prices for San Antonio to Philadelphia flights are approximately 11% 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

$414

Fastest flight time

3h 44m

Direct flights

Mon, Tue and Sun

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from San Antonio in the past 72 hours is $414. The best round-trip flight deal from San Antonio to Philadelphia found on momondo in the last 72 hours is $379.
The fastest flight from San Antonio to Philadelphia takes 3h 44m
Direct flights go from San Antonio to Philadelphia on Monday, Tuesday and Sunday. The only airline offering direct flights is American Airlines.
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 45m, 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 $157Free CancellationRating
5.8
3,103 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $169Free CancellationRating
6.3
8,158 reviews
Search Spirit Airlines flights
DeltaPriceFrom $255Free CancellationRating
7.9
8,002 reviews
Search Delta flights
SouthwestPriceFrom $296Free CancellationRating
8.0
4,251 reviews
Search Southwest flights
American AirlinesPriceFrom $313Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $316Free CancellationRating
7.4
9,029 reviews
Search United 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
Ocean City
Wildwood Crest
King of Prussia
Cherry Hill
Dewey Beach
Newark
Reading
North Wildwood
Dover
Avalon
Lewes
Stone Harbor
Essington
Vineland
Pottstown
New Castle
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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