To San Antonio

Cheap Flights from Philadelphia to San Antonio

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

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Philadelphia to San Antonio

Explore current cheapest deals departing from Philadelphia to San Antonio

Round trip

Sort by: Cheapest

August 4 - August 11

Cheapest

Earliest

PHL - San Antonio

$293

$217

Round trip

August 11 - August 18

Cheapest

PHL - San Antonio

$296

$217

Round trip

August 12 - August 19

Cheapest

PHL - San Antonio

$293

$217

Round trip

August 13 - August 19

PHL - San Antonio

$297

$218

Round trip

September 26 - September 30

Best

PHL - San Antonio

$311

$218

Round trip

August 10 - August 17

PHL - San Antonio

$295

$245

Round trip

August 5 - August 12

PHL - San Antonio

$293

$250

Round trip

August 13 - August 20

PHL - San Antonio

$297

$253

Round trip

September 3 - September 7

PHL - San Antonio

$296

$253

Round trip

August 21 - August 24

PHL - San Antonio

$309

$258

Round trip

Unlock all 500+ flight deals to San Antonio and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Philadelphia to San Antonio

The journey from Philadelphia to San Antonio covers a distance of 2404 kilometers, classifying it as a medium-haul route. This means you can expect a travel experience that balances distance with the convenience of a domestic flight.

When looking for cheap flights from Philadelphia to San Antonio, fares typically range from $506–$688, with a median price of $520. Right now, current fares are near the typical level for this route. Only 1% of recent fares were classified as a good price, indicating that finding significantly lower prices can be challenging. New deals appear almost daily, suggesting frequent opportunities to monitor prices for this route.

The cheapest time to fly from Philadelphia to San Antonio 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. These months tend to offer more favorable pricing compared to the overall median.

A typical journey from Philadelphia to San Antonio takes approximately 11h 17m, including connections. Most itineraries on this route connect at least once, as 0% of recent fares were for direct flights. When connecting, the median number of stopovers is 2, which contributes to the overall travel time.

How much is a round trip from Philadelphia to San Antonio

Regular price: $242 - $382

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

Regular prices for flights from Philadelphia to San Antonio typically range from $242 to $382. The current lowest deal is $217 with Deutsche Luft Hansa, for travel from August 4 to August 11.

now $217

Low $242

High $382

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

Thu, Jun 18

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$432

$394

One-way

Thu, Jun 18

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$425

$411

One-way

Thu, Jun 18

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$428

$419

One-way

Fri, Jun 19

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$431

$394

One-way

Fri, Jun 19

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$423

$404

One-way

Fri, Jun 19

⌛ Last-Minute

PHL - San Antonio

Philadelphia (PHL) - San Antonio (SAT)

Frontier Airlines

$430

$418

One-way

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

4 nights

Sep 26 - Sep 30

$311 → $218

30%

7 nights

Aug 11 - Aug 18

$296 → $217

27%

6 nights

Aug 13 - Aug 19

$297 → $218

27%

7 nights

Aug 4 - Aug 11

$293 → $217

26%

Popular Airports to fly from Philadelphia to San Antonio

Philadelphia - San Antonio route insights

💸 Price insights

Recent fares near the typical level

Recent fares are near the typical level for Philadelphia to San Antonio, with a median price of $520.

📅 Best time to fly

December is historically cheapest at $475

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

⏱️ Flight duration

Typically 11h 17m with connecting flights

Flights from Philadelphia to San Antonio typically take 11h 17m, as direct flights are not available.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are dominant on the Philadelphia to San Antonio route, with a median of 2 stopovers.

🏆 Airline highlight

American Airlines offers connecting flights

American Airlines is an available carrier for connecting flights from Philadelphia to San Antonio.

🎯 Booking tip

Deals are frequent for this route

Deals for flights from Philadelphia to San Antonio are frequent, with over 1 deal per day.

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

Consider AUS for significantly more direct flight options to the San Antonio area.

📍 ~120 km from San Antonio (reachable by car)

💸 Flights from ~$182

Corpus Christi International (CRP)

CRP offers additional options, especially for travelers heading toward the Gulf Coast.

📍 ~200 km from San Antonio (reachable by car)

💸 Flights from ~$347

Laredo International (LRD)

LRD provides reliable domestic service within the US with a straightforward drive south.

📍 ~240 km from San Antonio (reachable by car)

💸 Flights from ~$349

Killeen–Fort Hood Regional (GRK)

GRK is an alternative for travelers on the north side of San Antonio with a less congested terminal.

📍 ~120 km from San Antonio (reachable by car)

💸 Flights from ~$594

Victoria Regional (VCT)

VCT is geographically closer than some other regional options, but has extremely limited service.

📍 ~180 km from San Antonio (reachable by car)

💸 Flights from ~$409

Business & First Class Flight Deals to San Antonio

San Antonio, United States

43% AI deal score

$16,685

Frequently Asked Questions About Flights to San Antonio

To find more affordable flights, consider being flexible with your travel dates and times. Comparing prices across different airlines and booking sites can also help uncover better deals. Look out for sales or promotions that may be available.

Booking in advance often provides more options and potentially lower prices, but last-minute deals can sometimes appear. Prices may fluctuate, so monitoring fares over time can be beneficial. There isn't a single best time that guarantees the lowest fare.

Comparing nearby airports at both your origin and destination can sometimes reveal different flight options or prices. While it may add to travel time, it could lead to savings. Always consider the total cost and convenience when choosing.

Related routes

Consider alternative routes from Philadelphia

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Cheap Flights from Philadelphia to San Antonio

Today’s best flight deals from Philadelphia to San Antonio

Unlock all 500+ flight deals to San Antonio and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Philadelphia to San Antonio

How much is a round trip from Philadelphia to San Antonio

The cheapest time to fly from Philadelphia to San Antonio

Direct flights from Philadelphia to San Antonio

Last-minute flights going from Philadelphia to San Antonio

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

Popular Airports to fly from Philadelphia to San Antonio

Philadelphia - San Antonio route insights

Recent fares near the typical level

December is historically cheapest at $475

Typically 11h 17m with connecting flights

Connecting flights are dominant

American Airlines offers connecting flights

Deals are frequent for this route

Philadelphia main airports to depart from

San Antonio main airports to arrive at

Airports nearby San Antonio used as alternative

Business & First Class Flight Deals to San Antonio

Best Elite deals to San Antonio

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Frequently Asked Questions About Flights to San Antonio

How can I find cheap flights from Philadelphia to San Antonio?

How can I find cheap flights from Philadelphia to San Antonio?

When should I book flights from Philadelphia to San Antonio?

When should I book flights from Philadelphia to San Antonio?

Should I compare nearby airports for flights from Philadelphia to San Antonio?

Should I compare nearby airports for flights from Philadelphia to San Antonio?

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

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

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