$65 Cheap Flights from San Antonio (SAT) to Philadelphia (PHL)

View $65 flight on Mon, Dec 15, 2025Opens in a new window

Popular airlines from San Antonio International Airport (SAT) to Philadelphia Intl. Airport (PHL)

Cheap Flights from San Antonio to Philadelphia (SAT-PHL)

Prices were available within the past 7 days and start at $65 for one-way flights and $134 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Dec 5 - Sat, Dec 13
SAT
San Antonio
PHL
Philadelphia
$134 Roundtrip, just found
$134
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Dec 5 from San Antonio to Philadelphia, returning Sat, Dec 13, priced at $134 just found
Frontier Airlines
Fri, Dec 12 - Sun, Dec 14
SAT
San Antonio
PHL
Philadelphia
$142 Roundtrip, just found
$142
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Dec 12 from San Antonio to Philadelphia, returning Sun, Dec 14, priced at $142 just found
Frontier Airlines
Thu, Dec 11 - Sat, Dec 13
SAT
San Antonio
PHL
Philadelphia
$150 Roundtrip, found 3 days ago
$150
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Dec 11 from San Antonio to Philadelphia, returning Sat, Dec 13, priced at $150 found 3 days ago
Frontier Airlines
Sat, Feb 21 - Thu, Feb 26
SAT
San Antonio
PHL
Philadelphia
$159 Roundtrip, found 1 day ago
$159
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Feb 21 from San Antonio to Philadelphia, returning Thu, Feb 26, priced at $159 found 1 day ago
Spirit Airlines
Wed, Dec 3 - Sun, Dec 7
SAT
San Antonio
PHL
Philadelphia
$163 Roundtrip, found 9 hours ago
$163
Roundtrip
found 9 hours ago
Select Spirit Airlines flight, departing Wed, Dec 3 from San Antonio to Philadelphia, returning Sun, Dec 7, priced at $163 found 9 hours ago
Spirit Airlines
Fri, Dec 12 - Sun, Dec 14
SAT
San Antonio
PHL
Philadelphia
$167 Roundtrip, just found
$167
Roundtrip
just found
Select Spirit Airlines flight, departing Fri, Dec 12 from San Antonio to Philadelphia, returning Sun, Dec 14, priced at $167 just found
Spirit Airlines
Thu, Dec 11 - Sun, Dec 14
SAT
San Antonio
PHL
Philadelphia
$168 Roundtrip, just found
$168
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Dec 11 from San Antonio to Philadelphia, returning Sun, Dec 14, priced at $168 just found
American Airlines
Wed, Jan 14 - Tue, Jan 20
SAT
San Antonio
PHL
Philadelphia
$338 Roundtrip, just found
$338
Roundtrip
just found
Select American Airlines flight, departing Wed, Jan 14 from San Antonio to Philadelphia, returning Tue, Jan 20, priced at $338 just found
United
Thu, Nov 27 - Wed, Dec 3
SAT
San Antonio
PHL
Philadelphia
$356 Roundtrip, just found
$356
Roundtrip
just found
Select United flight, departing Thu, Nov 27 from San Antonio to Philadelphia, returning Wed, Dec 3, priced at $356 just found
Southwest Airlines
Wed, Dec 17 - Sat, Dec 20
SAT
San Antonio
PHL
Philadelphia
$361 Roundtrip, just found
$361
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Dec 17 from San Antonio to Philadelphia, returning Sat, Dec 20, priced at $361 just found

Find the cheapest month to fly from San Antonio (SAT) to Philadelphia (PHL)

February is typically the cheapest month to fly

From $120 - $393 per traveler.

Alternative airports near Philadelphia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to New Castle ILG. Average driving time to city center is 44 minutes. Flights from $571
ILG
New Castle
Average driving time to city center44 min
Flights from $571
Flights from San Antonio (SAT) to Philadelphia (PHL)
Origin airport
San Antonio Intl.
Destination airport
Philadelphia Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$134
Distance
1494 mi

San Antonio to Philadelphia Flights

The cheapest times to fly from San Antonio to Philadelphia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Antonio to Philadelphia are during the month of December. You can find some of the cheapest flights from San Antonio to Philadelphia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Antonio to Philadelphia

Sunday is one of the best days to book for cheap flights from San Antonio to Philadelphia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Antonio to Philadelphia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Antonio to Philadelphia in 2025. You can also book with separate airlines for your outbound and return journeys, from $65 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Antonio to Philadelphia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Antonio to Philadelphia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL) cost?
Snag a cheap one-way flight from $65 or cheap return flight from $134 from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL)?
December is the most affordable month to fly from SAT to PHL. Avoiding peak travel times is often the key to finding a great deal.
What is the cheapest airline that flies from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL)?
To find the cheapest airline that'll fly you from SAT to PHL, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL)?
There are no daily direct flights available from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from SAT to PHL?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL)?
Choose a flight from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL) that takes off before 3 PM to reduce the risk of cancellations. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL) last-minute?
Last-minute bookings from SAT to PHL are typically more expensive. For the lowest prices, start looking for flights well ahead of time. That said, if you're flexible with your travel dates, it's possible to land a cheap fare right before you leave.
Is it cheaper to book a SAT to PHL flight and hotel package?
You can save money by securing a SAT to PHL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your preferred flights and accommodations, you can add extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from San Antonio Intl. Airport (SAT) to Philadelphia Intl. Airport (PHL)?
If you booked your SAT to PHL flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

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*Available to One Key members.