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

View $65 flight on Thu, Nov 20, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $65 for one-way flights and $130 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, Dec 13 - Mon, Jan 12
PHL
Philadelphia
SAT
San Antonio
$130 Roundtrip, found 13 hours ago
$130
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Sat, Dec 13 from Philadelphia to San Antonio, returning Mon, Jan 12, priced at $130 found 13 hours ago
Frontier Airlines
Sun, Dec 14 - Mon, Jan 12
PHL
Philadelphia
SAT
San Antonio
$134 Roundtrip, found 18 hours ago
$134
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Sun, Dec 14 from Philadelphia to San Antonio, returning Mon, Jan 12, priced at $134 found 18 hours ago
Frontier Airlines
Sat, Dec 6 - Mon, Dec 8
PHL
Philadelphia
SAT
San Antonio
$138 Roundtrip, found 13 hours ago
$138
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Sat, Dec 6 from Philadelphia to San Antonio, returning Mon, Dec 8, priced at $138 found 13 hours ago
Frontier Airlines
Thu, Jan 8 - Sun, Jan 11
PHL
Philadelphia
SAT
San Antonio
$146 Roundtrip, found 7 hours ago
$146
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Thu, Jan 8 from Philadelphia to San Antonio, returning Sun, Jan 11, priced at $146 found 7 hours ago
Frontier Airlines
Sun, Dec 7 - Fri, Dec 12
PHL
Philadelphia
SAT
San Antonio
$151 Roundtrip, found 2 days ago
$151
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Dec 7 from Philadelphia to San Antonio, returning Fri, Dec 12, priced at $151 found 2 days ago
Frontier Airlines
Thu, Nov 20 - Tue, Dec 2
PHL
Philadelphia
SAT
San Antonio
$154 Roundtrip, found 9 hours ago
$154
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Nov 20 from Philadelphia to San Antonio, returning Tue, Dec 2, priced at $154 found 9 hours ago
Spirit Airlines
Wed, Dec 3 - Sun, Dec 7
PHL
Philadelphia
SAT
San Antonio
$163 Roundtrip, found 9 hours ago
$163
Roundtrip
found 9 hours ago
Select Spirit Airlines flight, departing Wed, Dec 3 from Philadelphia to San Antonio, returning Sun, Dec 7, priced at $163 found 9 hours ago
American Airlines
Thu, Jan 29 - Mon, Feb 2
PHL
Philadelphia
SAT
San Antonio
$316 Roundtrip, found 10 hours ago
$316
Roundtrip
found 10 hours ago
Select American Airlines flight, departing Thu, Jan 29 from Philadelphia to San Antonio, returning Mon, Feb 2, priced at $316 found 10 hours ago
Southwest Airlines
Thu, Feb 5 - Tue, Feb 10
PHL
Philadelphia
SAT
San Antonio
$356 Roundtrip, found 3 days ago
$356
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Thu, Feb 5 from Philadelphia to San Antonio, returning Tue, Feb 10, priced at $356 found 3 days ago
United
Wed, Dec 10 - Sat, Dec 13
PHL
Philadelphia
SAT
San Antonio
$356 Roundtrip, found 13 hours ago
$356
Roundtrip
found 13 hours ago
Select United flight, departing Wed, Dec 10 from Philadelphia to San Antonio, returning Sat, Dec 13, priced at $356 found 13 hours ago

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

February is typically the cheapest month to fly

From $120 - $404 per traveler.

Alternative airports near San Antonio

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

Select flight to San Antonio Intl. SAT. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $245
SAT
San Antonio Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $245

Frequently asked questions

How much does a flight from Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT) cost?
Secure a cheap one-way flight from $65 or cheap return flight from $130 from Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT)?
December is the most affordable month to fly from PHL to SAT. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest PHL to SAT flight.
How many flights per day from Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT)?
Nonstop flights from Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PHL to SAT?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, such as the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from PHL to SAT?
With 85% of journeys typically arriving as scheduled, American Airlines has the best on-time performance for direct flights from Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT). To monitor your flight status and get notified about any changes, use the Expedia App.
What is the best time to fly from Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT)?
To avoid possible delays on the Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT) route, fly before 3 PM. Later departures are 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 Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT) last-minute?
Holding off until right before your break to book a ticket from PHL to SAT generally means paying more. While you may come across some last-minute deals, they're not always guaranteed. Keep your travel plans flexible to maximize your chances of snagging a bargain.
Is it cheaper to book a PHL to SAT flight and hotel package?
Compared with arranging hotels and flights separately, booking a PHL to SAT flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place takes the hassle out of travel planning. Just pick your flights and select from our wide range of hotels, then personalize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Philadelphia Intl. Airport (PHL) to San Antonio Intl. Airport (SAT)?
If you reserved your PHL to SAT flight within the last 24 hours, you may be able to modify or cancel 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 if you want more information.

Travel information

Origin airport
Philadelphia Intl.
Destination airport
San Antonio Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$130
Distance
1494 mi

Book with confidence

Philadelphia to San Antonio Flights

The cheapest times to fly from Philadelphia to San Antonio

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 Philadelphia to San Antonio are during the month of December. You can find some of the cheapest flights from Philadelphia to San Antonio with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Philadelphia to San Antonio: 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 Philadelphia to San Antonio

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 Philadelphia to San Antonio 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 Philadelphia to San Antonio 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 Philadelphia to San Antonio 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.

 

Philadelphia to San Antonio Flights

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*Available to One Key members.