Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from San Antonio to Philadelphia from $91

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 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from San Antonio to Philadelphia

Cheap round-trip flights

Frontier Logo
5:40 pm - 12:59 amSAT-PHL
6h 19m1 stop
Frontier Logo
5:15 am - 4:30 pmPHL-SAT
12h 15m1 stop
$143Frontier
Find Deal
Fri, Oct 3 - Mon, Oct 6
Frontier Logo
8:26 pm - 5:19 amSAT-PHL
7h 53m1 stop
Frontier Logo
5:20 am - 4:52 pmPHL-SAT
12h 32m1 stop
$153Frontier
Find Deal
Thu, Oct 23 - Sun, Oct 26
Frontier Logo
8:43 pm - 4:49 amSAT-PHL
7h 06m1 stop
Frontier Logo
6:19 am - 2:17 pmPHL-SAT
8h 58m1 stop
$164Frontier
Find Deal
Thu, Oct 30 - Sat, Nov 1
Frontier Logo
8:43 pm - 4:49 amSAT-PHL
7h 06m1 stop
Frontier Logo
6:19 am - 7:30 pmPHL-SAT
14h 11m1 stop
$174Frontier
Find Deal
Thu, Oct 30 - Mon, Nov 3
Frontier Logo
11:33 am - 12:57 amSAT-PHL
12h 24m1 stop
Frontier Logo
5:15 am - 4:30 pmPHL-SAT
12h 15m1 stop
$176Frontier
Find Deal
Thu, Sep 25 - Mon, Sep 29
Frontier Logo
12:41 pm - 12:57 amSAT-PHL
11h 16m1 stop
Frontier Logo
5:15 am - 4:30 pmPHL-SAT
12h 15m1 stop
$182Frontier
Find Deal
Fri, Sep 26 - Mon, Sep 29
Logo
5:40 pm - 12:59 amSAT-PHL
6h 19m1 stop
Logo
10:44 am - 6:30 pmPHL-SAT
8h 46m1 stop
$220
Find Deal
Fri, Oct 3 - Sun, Oct 5
Spirit Airlines Logo
4:16 pm - 12:32 amSAT-PHL
7h 16m1 stop
Spirit Airlines Logo
5:15 am - 3:11 pmPHL-SAT
10h 56m1 stop
$222Spirit Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Spirit Airlines Logo
4:16 pm - 9:46 amSAT-PHL
16h 30m1 stop
Spirit Airlines Logo
5:15 am - 3:11 pmPHL-SAT
10h 56m1 stop
$264Spirit Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 14
Spirit Airlines Logo
6:00 am - 12:32 amSAT-PHL
17h 32m2 stops
Spirit Airlines Logo
5:15 am - 3:11 pmPHL-SAT
10h 56m1 stop
$265Spirit Airlines
Find Deal
Thu, Dec 4 - Wed, Dec 10

Frontier flights from San Antonio to Philadelphia

Our best Frontier deals on San Antonio to Philadelphia flight tickets
Frontier
Oct 3
SAT5:40 pmSan Antonio
6h 19m
1 stop
PHL12:59 amPhiladelphia
Oct 6
PHL5:15 amPhiladelphia
12h 15m
1 stop
SAT4:30 pmSan Antonio
$143
Find similar
Frontier
Oct 23
SAT8:26 pmSan Antonio
7h 53m
1 stop
PHL5:19 amPhiladelphia
Oct 26
PHL5:20 amPhiladelphia
12h 32m
1 stop
SAT4:52 pmSan Antonio
$153
Find similar
Frontier
Oct 30
SAT8:43 pmSan Antonio
7h 06m
1 stop
PHL4:49 amPhiladelphia
Nov 1
PHL6:19 amPhiladelphia
8h 58m
1 stop
SAT2:17 pmSan Antonio
$164
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 8
SAT4:16 pmSan Antonio
7h 16m
1 stop
PHL12:32 amPhiladelphia
Dec 15
PHL5:15 amPhiladelphia
10h 56m
1 stop
SAT3:11 pmSan Antonio
$222
Find similar
Spirit Airlines
Dec 6
SAT4:16 pmSan Antonio
16h 30m
1 stop
PHL9:46 amPhiladelphia
Dec 14
PHL5:15 amPhiladelphia
10h 56m
1 stop
SAT3:11 pmSan Antonio
$264
Find similar
Spirit Airlines
Dec 4
SAT6:00 amSan Antonio
17h 32m
2 stops
PHL12:32 amPhiladelphia
Dec 10
PHL5:15 amPhiladelphia
10h 56m
1 stop
SAT3:11 pmSan Antonio
$265
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 September 15, 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

Fri 10/3

5:40 pm-12:59 am

1 stop6h 19m

Philadelphia

Mon 10/6

5:15 am-4:30 pm

1 stop12h 15m

$143

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 10/23

8:26 pm-5:19 am

1 stop7h 53m

Philadelphia

Sun 10/26

5:20 am-4:52 pm

1 stop12h 32m

$153

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 10/30

8:43 pm-4:49 am

1 stop7h 06m

Philadelphia

Sat 11/1

6:19 am-2:17 pm

1 stop8h 58m

$164

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 10/30

8:43 pm-4:49 am

1 stop7h 06m

Philadelphia

Mon 11/3

6:19 am-7:30 pm

1 stop14h 11m

$174

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 9/25

11:33 am-12:57 am

1 stop12h 24m

Philadelphia

Mon 9/29

5:15 am-4:30 pm

1 stop12h 15m

$176

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Fri 9/26

12:41 pm-12:57 am

1 stop11h 16m

Philadelphia

Mon 9/29

5:15 am-4:30 pm

1 stop12h 15m

$182

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Fri 10/3

5:40 pm-12:59 am

1 stop6h 19m

Philadelphia

Sun 10/5

10:44 am-6:30 pm

1 stop8h 46m

$220

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Mon 12/8

4:16 pm-12:32 am

1 stop7h 16m

Philadelphia

Mon 12/15

5:15 am-3:11 pm

1 stop10h 56m

$222

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Sat 12/6

4:16 pm-9:46 am

1 stop16h 30m

Philadelphia

Sun 12/14

5:15 am-3:11 pm

1 stop10h 56m

$264

San AntonioPhiladelphia

SAT - PHL

SATPHL

San Antonio

Thu 12/4

6:00 am-12:32 am

2 stops17h 32m

Philadelphia

Wed 12/10

5:15 am-3:11 pm

1 stop10h 56m

$265

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 February. Flight prices, which tend to average around $375, are often lower during this time because this is during the off-season. The month of January is another great option to travel to Philadelphia, with average flight prices from San Antonio averaging around $398.

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 Wednesday. Travelers who choose to depart for Philadelphia on a Wednesday will often find tickets for as low as $496. 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 $1,343.

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 $943.

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 $436 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 $330 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 September 2025, prices for San Antonio to Philadelphia flights are approximately 69% 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

$148

Fastest flight time

3h 29m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from San Antonio in the past 72 hours is $148. The best round-trip flight deal from San Antonio to Philadelphia found on momondo in the last 72 hours is $320.
The fastest flight from San Antonio to Philadelphia takes 3h 29m
Direct flights go from San Antonio to Philadelphia on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
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 6h 17m, 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
3,172 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $169Free CancellationRating
6.3
8,015 reviews
Search Spirit Airlines flights
DeltaPriceFrom $255Free CancellationRating
7.9
7,954 reviews
Search Delta flights
SouthwestPriceFrom $296Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $308Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $316Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights

  • American Airlines Flights From San Antonio to Philadelphia

    American Airlines flight deals from San Antonio to Philadelphia start from $308 round-trip. Over the 7 American Airlines flights for this route in a normal week, average airfare is usually $469 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
Cape May
Rehoboth Beach
Ocean City
Wildwood Crest
King of Prussia
Dewey Beach
Reading
Newark
Cherry Hill
North Wildwood
Dover
Avalon
Lewes
Stone Harbor
Vineland
Essington
Pottstown
New Castle
West Chester

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.

An easier way to manage your Philadelphia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 10/15
Wed 10/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States