PHL - SAT

$123 Find Cheap Flights from Philadelphia to San Antonio

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to San Antonio departing on 6/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to San Antonio.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to San Antonio.
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Everything you should know

Cheapest round-trip
$257
Typical prices: $554-$402
Frontier
Sat 6/13Sat 7/18
PHL - SAT • 1 stop
Cheapest non-stop
$411
American Airlines
Fri 7/3Sat 7/11
PHL - SAT • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
PHL offers public transportation via SEPTA trains.
Take the #5 VIA bus from SAT for easy downtown access.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
You can fly direct with American Airlines. Average duration is 3h 58m
Direct flights
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Avoid delays
Most punctual • 75% on-time
Best time • Fewest delays
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Top layover airports
Cheapest • Avg $239 (round-trip)
Shortest trip • 5h 24m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 28% compared to booking last minute.
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When to travel
Cheapest • 23% price drop
Most popular
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to San Antonio

Sat, Jun 13 - Sat, Jul 18
Frontier Logo
11:00 am - 8:11 pm
PHL
-
SAT
10h 11m
1 stop
Frontier Logo
8:59 pm - 6:22 am
SAT
-
PHL
8h 23m
1 stop
$257Frontier
Mon, Aug 3 - Sat, Aug 8
Frontier Logo
8:37 pm - 6:54 pm
PHL
-
SAT
23h 17m
1 stop
Frontier Logo
4:26 pm - 8:51 am
SAT
-
PHL
15h 25m
1 stop
$263Frontier
Tue, Jul 21 - Sat, Jul 25
Frontier Logo
11:06 am - 8:14 pm
PHL
-
SAT
10h 08m
1 stop
Frontier Logo
8:59 pm - 6:22 am
SAT
-
PHL
8h 23m
1 stop
$264Frontier
Mon, Jun 15 - Mon, Jun 22
Frontier Logo
11:00 am - 8:11 pm
PHL
-
SAT
10h 11m
1 stop
Frontier Logo
4:22 pm - 11:43 pm
SAT
-
PHL
6h 21m
1 stop
$268Frontier
Fri, Jun 12 - Sun, Jun 14
Frontier Logo
8:37 pm - 6:56 pm
PHL
-
SAT
23h 19m
1 stop
Frontier Logo
7:51 pm - 11:47 am
SAT
-
PHL
14h 56m
1 stop
$270Frontier
Fri, Jun 12 - Mon, Jun 15
Frontier Logo
8:37 pm - 6:56 pm
PHL
-
SAT
23h 19m
1 stop
Frontier Logo
7:51 pm - 5:38 am
SAT
-
PHL
8h 47m
1 stop
$276Frontier
Sat, Jul 18 - Mon, Jul 27
Frontier Logo
11:06 am - 8:37 pm
PHL
-
SAT
10h 31m
1 stop
Frontier Logo
7:49 pm - 5:39 am
SAT
-
PHL
8h 50m
1 stop
$277Frontier
Sun, Jul 19 - Tue, Jul 21
Frontier Logo
12:44 pm - 6:54 pm
PHL
-
SAT
7h 10m
1 stop
Frontier Logo
8:59 pm - 6:22 am
SAT
-
PHL
8h 23m
1 stop
$278Frontier
Sat, Aug 1 - Wed, Aug 12
Frontier Logo
11:06 am - 8:14 pm
PHL
-
SAT
10h 08m
1 stop
Frontier Logo
8:59 pm - 6:22 am
SAT
-
PHL
8h 23m
1 stop
$282Frontier
Sat, Jun 13 - Sun, Jul 19
Frontier Logo
11:00 am - 8:11 pm
PHL
-
SAT
10h 11m
1 stop
Frontier Logo
7:51 pm - 5:39 am
SAT
-
PHL
8h 48m
1 stop
$284Frontier
Booking Insights

KAYAK's insights & trends for Philadelphia to San Antonio flights

Get data-powered insights and trends into flights from Philadelphia to San Antonio to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Philadelphia to San Antonio?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to San Antonio departing in June.

What’s the cheapest day of the week to fly from Philadelphia to San Antonio?

The average price of all round-trip flights from Philadelphia to San Antonio clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to San Antonio on a Saturday and more expensive on a Monday. On your return trip to Philadelphia, you should consider flying back on a Tuesday, and avoid Mondays for better deals.

What is the cheapest month to fly from Philadelphia to San Antonio?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to San Antonio, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to San Antonio is April, where tickets cost $361 (return) on average. On the other hand, the most expensive months are November and March, where the average cost of round-trip tickets is $547 and $544 respectively.

Can I save money by flying with a layover from Philadelphia to San Antonio?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $354, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Philadelphia to San Antonio?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to San Antonio, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to San Antonio, you should book around 4 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Expert advice

Expert advice for your flight from Philadelphia to San Antonio

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on PHL

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Brandon Schultz

Brandon Schultz

Expert on SAT

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Good to know

Low seasonJanuary
Cheapest flight$123
Most popular time to fly with an average 5% increase in price.
Flight from Philadelphia to San Antonio

When to book flights from Philadelphia to San Antonio

Are your dates flexible? Find out the best times to travel from Philadelphia to San Antonio based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to San Antonio

  • Which family services are offered at Philadelphia International Airport?

    PHL has provided the Mamava Suites for nursing mothers visiting the airport. The suites feature a bench, power outlets, and a fold-down table. Each suite is lockable for privacy. You’ll find these privates suites in Terminal F, Terminal A-West, and the B/C Connector. PHL has also provided family washrooms with baby changing facilities throughout the landside and airside sections of the airport. There is also a play area for older kids with climbing structures and toys. The “Ready For Take-Off” play area is in Terminal A-East.

  • How can I get downtown from San Antonio International Airport?

    SAT is served by VIA bus route 5, which runs between the airport and downtown San Antonio. The trip takes about 30min, and you can take this bus from the airport bus stop. SuperShuttle also provides door-to-door services between the airport and downtown San Antonio hotels. You can buy these tickets from Terminal A’s baggage claim area. Taxis are available 24/7 outside the baggage claim areas of Terminals A and B. Taxis are metered, and reservations aren’t needed. If you want to self-drive, take a rental car from the counters in Terminal A’s baggage claim area.

  • Does San Antonio International Airport offer accessible services?

    Passengers with reduced mobility will get wheelchair assistance at SAT once they book these services via their airline. Reserved parking spaces are available for drivers showing proper identification. The airport also has accessible/ family restrooms in both terminals. Service animals are welcome at SAT, and low-vision passengers can be safely guided through the airport using the free Aira app. Hard-of-hearing passengers will have access to TTY telephones and visual paging services.

  • What are some things to do at Philadelphia International Airport?

    There are a lot of art exhibitions at PHL that you can check out. The art is distributed throughout the airport. You can watch planes take off and land from the observation areas in all seven terminals. The observation areas are all airside. PHL also has a library in the D/E Connector airside, where you can relax on lounge chairs and read your favorite books.

  • What is the cheapest flight from Philadelphia to San Antonio?

    In the last 3 days, the lowest price for a flight from Philadelphia to San Antonio was $123 for a one-way ticket and $257 for a round-trip.

  • Do I need a passport to fly between Philadelphia and San Antonio?

    No, a passport isn't needed to fly from Philadelphia to San Antonio. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Philadelphia to San Antonio?

    Philadelphia and San Antonio are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at San Antonio.

  • Which airlines offer Wi-Fi service onboard planes from Philadelphia to San Antonio?

    American Airlines, JetBlue, and Delta offer inflight Wi-Fi service on the Philadelphia to San Antonio flight route.

  • Which aircraft models fly most regularly from Philadelphia to San Antonio?

    The Airbus A319 is the aircraft model that flies most regularly on the Philadelphia to San Antonio flight route.

  • Which airline alliances offer flights from Philadelphia to San Antonio?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Philadelphia and San Antonio, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Philadelphia to San Antonio?

    There are nonstop flights from Philadelphia to San Antonio on a daily basis.

  • Which is the best airline for flights from Philadelphia to San Antonio, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from Philadelphia to San Antonio are Southwest and Delta. With an average price for the route of $442 and an overall rating of 7.9, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $523 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Philadelphia to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and SAT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Philadelphia to San Antonio

  • Looking for a cheap flight? 25% of our users found flights on this route for $320 or less one-way and $507 or less round-trip.
  • Philadelphia International Airport (PHL) is a large airport with seven terminals. There is a lot of walking to reach the departure gates, but the airport has provided courtesy shuttles running every 10min for inter-terminal transportation.
  • San Antonio International Airport (SAT) is a pet-friendly airport. You can take your pet for a potty break at the following pet relief areas: Terminal B next to the west exit and in the indoor relief areas airside in both terminals.
  • Around 660 kg of carbon is emitted on flights from Philadelphia to San Antonio. You can fly more sustainably with United Airlines, which provides a flight that emits 37% less carbon per passenger.
  • United Airlines is the only airline with a lounge at SAT. You can access United Club by paying at the door and showing your flight ticket. The lounge is airside between Gates B3 and B5.
  • Unwind with a massage from XpresSpa at PHL before your flight. XpresSpa offers express spa services, including facials, manicures, massages, and pedicures, all taking less than 30min. You’ll find XpresSpa in Terminals C, D, and F at PHL.

Prefer to fly direct from Philadelphia to San Antonio?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Philadelphia to San Antonio.
Find which airlines fly direct from Philadelphia Airport to San Antonio Airport, which days they fly and book direct flights.

Direct departures

Philadelphia to San Antonio

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Direct returns

San Antonio to Philadelphia

Monday

American Airlines

American Airlines

Tuesday

American Airlines

American Airlines

Wednesday

American Airlines

American Airlines

Thursday

American Airlines

American Airlines

Friday

American Airlines

American Airlines

Saturday

American Airlines

American Airlines

Sunday

American Airlines

American Airlines

See more direct flights

Reviews of the top 5 airlines serving from Philadelphia to San Antonio

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to San Antonio. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to San Antonio? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
SouthwestOverall score based on 4282 reviews
7.0Food
8.1Boarding
8.0Comfort
7.5Entertainment
8.6Crew
Airline reviews

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

4.0 OkayAnonymous, May 2026
MSY - HOU
Read more Southwest reviews

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

The seat was not comfortable. 1D. My back was sore all night and the next day.

One of the best airlines for fast boarding, on time arrivals, and top notch service!

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

Snacks are always pretzels. Why can't you also offer peanuts ?

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

No screens or meal options. Freezing cold. Dirty seats. Left late.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

It isvvery small flight. No leg room . No space to put my personal item at feet.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Everything was on time and service on the flight was great!

Fine. Nothing to write home about. The plane left on time, and arrived on time.

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Got home at 3am after deboarding the plane. No compensation offered by American

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

Everything you need to know for your flight from Philadelphia to San Antonio

Information on your arrival and departure airports