Are direct flights from Philadelphia to San Antonio always the best option?

Direct flights are often convenient, saving time and avoiding layovers. However, connecting flights can sometimes be more affordable. Evaluate whether the time saved on a direct flight is worth a potentially higher cost for your specific travel needs.

Can flexible travel dates help on Philadelphia to San Antonio flights?

Being flexible with your travel dates can significantly impact flight prices. Mid-week flights or traveling during off-peak seasons often present lower fares. Adjusting your departure or return by a day or two may unlock better deals.

What extra costs should I check before booking Philadelphia to San Antonio flights?

Before booking, always review potential extra costs such as baggage fees, seat selection charges, and in-flight services. Some airlines may also charge for printing boarding passes at the airport. Factor these into your total travel budget.

Flights From Philadelphia

To San Antonio

Cheap Flights from Philadelphia to San Antonio

Browse current best options from Philadelphia. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Philadelphia

RatePunk searches hundreds of travel sites at once for deals on flights to San Antonio

Prices updated 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from Philadelphia to San Antonio

Explore current cheapest deals departing from Philadelphia to San Antonio

2026-08-11 – 2026-08-18
PHL - San Antonio
71% AI deal score
$307
$245
Round trip
2026-08-13 – 2026-08-25
PHL - San Antonio
67% AI deal score
$271
$249
Round trip
2026-08-17 – 2026-08-18
PHL - San Antonio
75% AI deal score
$323
$250
Round trip
2026-08-24 – 2026-08-25
PHL - San Antonio
70% AI deal score
$315
$250
Round trip
2026-08-10 – 2026-08-25
PHL - San Antonio
66% AI deal score
$264
$250
Round trip
2026-08-10 – 2026-08-26
PHL - San Antonio
66% AI deal score
$262
$250
Round trip
2026-08-10 – 2026-08-27
PHL - San Antonio
65% AI deal score
$258
$250
Round trip
2026-08-20 – 2026-08-24
PHL - San Antonio
71% AI deal score
$321
$250
Round trip
2026-08-24 – 2026-08-27
PHL - San Antonio
70% AI deal score
$314
$250
Round trip
2026-09-10 – 2026-09-12
PHL - San Antonio
69% AI deal score
$294
$250
Round trip

Philadelphia to San Antonio: Overview

Insights for flights from Philadelphia to San Antonio

A journey from Philadelphia to San Antonio covers a distance of 2404 kilometers, classifying it as a medium-haul route. This distance means you will typically find itineraries that include connections rather than direct flights.

For travelers seeking cheap flights from Philadelphia to San Antonio, the cheapest time to fly is often in December, with a median fare of $475. Other cost-effective months include April, where the median fare is $501, and August, with a median fare of $502. Planning your trip during these months could result in more favorable pricing.

The typical journey time from Philadelphia to San Antonio is 11h 17m, including connections. This duration reflects that most itineraries on this route involve at least one stop. Given that most itineraries connect at least once, this travel time accounts for the layovers and transfers you might encounter.

Fares for flights from Philadelphia to San Antonio typically range from $511–$1026, with a median of $543. Right now, current fares are significantly above the typical level for this route. New deals appear almost daily, suggesting frequent opportunities to find better prices if you monitor the route.

When flying from Philadelphia to San Antonio, most itineraries connect at least once. In fact, 0% of recent fares were for non-stop flights. For connecting itineraries, the median number of stopovers is 2, indicating that you should expect at least two connections on most journeys.

How much is a round trip from Philadelphia to San Antonio

Regular price: $262 - $401

Prices for flights from Philadelphia to San Antonio are currently below the regular range.

The regular price range for this route is between $262 and $401. The current lowest deal is $249 with Frontier Airlines for travel from Aug 20-Aug 24.

now $249

Low $262

High $401

The cheapest time to fly from Philadelphia to San Antonio

The cheapest month to fly from Philadelphia to San Antonio is December, with a median price of $475. The most expensive month is May, with a median price of $997. Prices are generally lower from April to December.

December

Cheapest

Flights from $475

May

Most Expensive

Flights from $997

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Philadelphia to San Antonio

American Airlines

Last-minute flights going from Philadelphia to San Antonio

Tue, Jul 28

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$399

$383

One-way

Sun, Aug 2

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$448

$377

One-way

Mon, Aug 3

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$410

$379

One-way

Tue, Aug 4

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$347

$319

One-way

Tue, Aug 4

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$388

$366

One-way

Wed, Aug 5

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$380

$351

One-way

Biggest price drops on these dates for flights from Philadelphia to San Antonio

7 nights

Dec 9 - Dec 16

$467 → $367

21%

5 nights

Oct 8 - Oct 13

$325 → $249

23%

1 night

Aug 24 - Aug 25

$323 → $249

23%

2 nights

Aug 25 - Aug 27

$323 → $250

23%

Popular Airports to fly from Philadelphia to San Antonio

Philadelphia - San Antonio route insights

💸 Price insights

Recent fares are below the typical level

Recent roundtrip fares from Philadelphia to San Antonio are below the typical level.

📅 Best time to fly

Fly in December for the best prices

Historically, December is the cheapest month to fly, with a median price of $475.

⏱️ Flight duration

Connecting flights take 11h 17m

Flights from Philadelphia to San Antonio typically involve connecting, with a median duration of 11h 17m.

✈️ Airlines & availability

Connecting flights are dominant

This route is connecting dominant, with frequent deals available for connecting flights.

🏆 Airline highlight

Frontier Airlines offers a recent deal

Frontier Airlines recently offered a roundtrip flight for $249 from August 20 to August 24.

🎯 Booking tip

Deals are frequent on this route

Deals for flights from Philadelphia to San Antonio are historically frequent.

Philadelphia main airports to depart from

Philadelphia International (PHL)

Cheapest

Philadelphia International is the cheapest option for flights from Philadelphia to San Antonio.

📍 ~10 km from city center (reachable by car or train)

💸 Flights from ~$217

San Antonio main airports to arrive at

San Antonio International (SAT)

Cheapest

San Antonio International Airport is the primary airport for flights arriving in San Antonio.

📍 ~15 km from San Antonio (reachable by car)

💸 Flights from ~$217

Airports nearby San Antonio used as alternative

Austin–Bergstrom International (AUS)

Cheapest

Austin–Bergstrom International is a major international hub with an extensive flight network.

📍 ~120 km from San Antonio (reachable by car, but heavy traffic on I-35 can increase travel time).

💸 Flights from ~$145

Business & First Class Flight Deals to San Antonio

84% AI deal score

$1,559

$991

Save $568

Frequently Asked Questions About Flights to San Antonio

Finding affordable flights often involves comparing prices from various providers. Using flight comparison sites can help you see different options side-by-side. Consider being flexible with your travel dates to potentially uncover better deals.

Booking flights in advance can often lead to better prices, though there isn't a single 'best' time. Prices may fluctuate, so monitoring fares over a period can be beneficial. Generally, booking several weeks to a few months before your desired departure may offer more options.

Comparing nearby airports can sometimes reveal more economical flight options. While it may add to your ground travel, the savings on airfare can be significant. Always factor in the cost and time of transportation to and from alternative airports.

Related routes

More routes from Philadelphia

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Flights to San Antonio from other cities

Flights from Atlanta to San Antonio Flights from Boston to San Antonio Flights from Nashville to San Antonio Flights from Phoenix to San Antonio Flights from Pittsburgh to San Antonio Flights from Reykjavik to San Antonio Flights from Sacramento to San Antonio Flights from Salt Lake City to San Antonio Flights from Seattle to San Antonio Flights from Singapore to San Antonio Flights from Tampa to San Antonio Flights from Toronto to San Antonio

Philadelphia to San Antonio: Overview

Insights for flights from Philadelphia to San Antonio

How much is a round trip from Philadelphia to San Antonio

Regular price: $262 - $401

Prices for flights from Philadelphia to San Antonio are currently below the regular range.

The regular price range for this route is between $262 and $401. The current lowest deal is $249 with Frontier Airlines for travel from Aug 20-Aug 24.

now $249

Low $262

High $401

The cheapest time to fly from Philadelphia to San Antonio

December

Cheapest

Flights from $475

May

Most Expensive

Flights from $997

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Philadelphia to San Antonio

American Airlines

Last-minute flights going from Philadelphia to San Antonio

Tue, Jul 28

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$399

$383

One-way

Sun, Aug 2

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$448

$377

One-way

Mon, Aug 3

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$410

$379

One-way

Tue, Aug 4

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$347

$319

One-way

Tue, Aug 4

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$388

$366

One-way

Wed, Aug 5

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$380

$351

One-way

Biggest price drops on these dates for flights from Philadelphia to San Antonio

7 nights

Dec 9 - Dec 16

$467 → $367

21%

5 nights

Oct 8 - Oct 13

$325 → $249

23%

1 night

Aug 24 - Aug 25

$323 → $249

23%

2 nights

Aug 25 - Aug 27

$323 → $250

23%

Popular Airports to fly from Philadelphia to San Antonio