PHL - SAT

$88 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 4/14. 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
$152
Overall average: $383
Multiple Airlines
Wed 4/29Sat 5/2
PHL - SAT • 1 stop
Cheapest non-stop
$361
American Airlines
Sat 4/18Tue 4/21
PHL - SAT • Non-stop
Our travelers' advice
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
Video guide: How to find cheap flights to San Antonio
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Top airlines
Frontier
Cheapest • from $154 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 17% price drop
May
Most popular
Good to know
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+1
+1
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+1
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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

Wed, Apr 29 - Sat, May 2
Multiple Airlines Logo
5:28 pm - 9:11 am
PHL
-
SAT
16h 43m
1 stop
Multiple Airlines Logo
3:34 pm - 5:34 am
SAT
-
PHL
13h 00m
1 stop
$152Multiple Airlines
Tue, Apr 28 - Sat, May 2
Frontier Logo
8:25 pm - 2:19 pm
PHL
-
SAT
18h 54m
1 stop
Frontier Logo
3:34 pm - 5:34 am
SAT
-
PHL
13h 00m
1 stop
$154Frontier
Wed, Apr 29 - Sat, May 2
Multiple Airlines Logo
5:28 pm - 9:11 am
PHL
-
SAT
16h 43m
1 stop
Multiple Airlines Logo
3:34 pm - 5:34 am
SAT
-
PHL
13h 00m
1 stop
$155Multiple Airlines
Sun, Apr 26 - Sat, May 2
Multiple Airlines Logo
5:28 pm - 9:11 am
PHL
-
SAT
16h 43m
1 stop
Multiple Airlines Logo
3:34 pm - 5:34 am
SAT
-
PHL
13h 00m
1 stop
$169Multiple Airlines
Wed, May 6 - Mon, May 11
Multiple Airlines Logo
5:28 pm - 9:11 am
PHL
-
SAT
16h 43m
1 stop
Multiple Airlines Logo
10:26 am - 11:10 pm
SAT
-
PHL
11h 44m
1 stop
$171Multiple Airlines
Tue, Apr 28 - Tue, May 5
Frontier Logo
8:25 pm - 2:19 pm
PHL
-
SAT
18h 54m
1 stop
Frontier Logo
3:14 pm - 5:34 am
SAT
-
PHL
13h 20m
1 stop
$172Frontier
Sun, Apr 26 - Wed, Apr 29
Multiple Airlines Logo
5:28 pm - 9:11 am
PHL
-
SAT
16h 43m
1 stop
Multiple Airlines Logo
3:14 pm - 5:34 am
SAT
-
PHL
13h 20m
1 stop
$173Multiple Airlines
Tue, Mar 24 - Tue, Mar 31
Spirit Airlines Logo
5:00 am - 12:27 pm
PHL
-
SAT
8h 27m
1 stop
Spirit Airlines Logo
1:22 pm - 10:52 pm
SAT
-
PHL
8h 30m
1 stop
$174Spirit Airlines
Tue, Mar 24 - Wed, Mar 25
Spirit Airlines Logo
5:00 am - 12:27 pm
PHL
-
SAT
8h 27m
1 stop
Spirit Airlines Logo
1:22 pm - 10:52 pm
SAT
-
PHL
8h 30m
1 stop
$175Spirit Airlines
Mon, Apr 27 - Sat, May 2
Frontier Logo
8:25 pm - 2:19 pm
PHL
-
SAT
18h 54m
1 stop
Frontier Logo
3:34 pm - 5:34 am
SAT
-
PHL
13h 00m
1 stop
$176Frontier
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.

Find cheap flights to San Antonio
Find cheap flights to San Antonio

Planning a trip from Philadelphia to San Antonio? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

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 Wednesday, 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 $383 (return) on average. On the other hand, the most expensive months are November and December, where the average cost of round-trip tickets is $547 and $534 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 $401, 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 5 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 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$88
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 6% 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 $88 for a one-way ticket and $152 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, 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.

  • 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 $455 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $441 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 $361 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.
8.0
SouthwestOverall score based on 4295 reviews
8.6Crew
7.5Entertainment
7.0Food
8.0Comfort
8.1Boarding
Airline reviews

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

10.0 ExcellentAnonymous, Feb 2026
STL - DAL
Read more Southwest reviews

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

Great flight but super high price. Glad it was a business trip and not personal

On time. Friendly staff. Took to long to pre bord all the specialty groups. Cramped small plane

No delays and arrived to destination 30 min early. Staff was super friendly.

Everything a cheap airline should be at normal airline rates.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

I was re-booked onto another flight because my original flight was delayed and I would have missed my connector. I ended up in the “C” group after paying extra to be in the “A “ group on the original flight. At least if you’re going to re-book people, re-book them into the same group.

For my birthday trip this was my second time ever flying, this trip was the best.

Multiple delays and gate changes. Arrived at final destination 6 hours late. All rental cars had been taken.

First flight out and was 85 minutes delayed. Notification came out way too late

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Good experience and the flight landed early. There was no food I had or entertainment.

Flight was delayed and no reasons provided. After the passengers were boarded, the crew made announcement that the captain has jot arrived and he would take another 15 mins. All passengers patiently sat until the captain came and started. Terrible experience!

Flight was delayed. No information on why it was delayed. After we boarded the flight, , the crew made announcement that the captain hs not arrived and he will take 15 mins more to arrive. Passengers were just sitting patiently for the captain to arrive and start, Terrible experience.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

Smallest leg room I've ever had on a plane.

Very old flight - time to retire it for newer airplanes

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Everything except the food and entertainment. It was a great experience though

Delayed, toilets did not flush, pilot parked to far away from Gate

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

United is an incompetent airline. They parked the plane on the tarmac for an hour after arriving because they “didn’t have a gate available” it was actually some sort of lie because as we de planed there were approximately 9 open and manned and empty gates that we walked past. Many people on the flight missed connections for the hour long sit on the tarmac. Utterly baffling and incompetent behavior from United flight ops.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Even though we were delayed, we were able to make our connection

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

They are always late and seats was also not having working charger

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

Delays to take off and to leave the plane after landing added a lot of time to this flight.

The Phildalphia to Allentown portion was a BUS, not a plane. All was as expected.

Excellent - explanations were clear staff was nice and flight was comfortable

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

First of all we hade waited 3 hours in the airplane waiting to leave. Second the return schedule was changed and it messed up my entire vaction. I won't buy never again another flight and recommend to nobody traveling with them.

There was no food and no entertainment, so I'm not sure why these are even in the survey, as my understanding is frontier does not ever offer food without a few, not even a snack, and there are no screens so unless the flight safety talk is our entertainment why ask how we liked it?. One of the flight attendants say in the back of the plane as people filed in to their seats, yelling orders about where to put baggage and telling people to hurry up. It was the least professional experience I've ever had on a flight.

Very well recently! Frontier is improving and less harrassing customer on luggages! Positive!

Good for a budget airline! It was easy to get on, staff was really nice. Can’t say anything about the food or entertainment because it wasn’t available, which is fine.

I am writing to express my disappointment with my recent Frontier Airlines flight. I was charged $99 at the gate because my bag was said to be too large, yet once onboard there was no available overhead bin space, and I was required to place the bag under the seat in front of me anyway. This made the charge feel unnecessary and unfair. Additionally, before the flight even took off, I was asked to move from the seat I paid for into a middle seat so another passenger and her cat could have my seat to themselves. I was not offered compensation or an explanation for being moved from a paid seat. Between the unexpected bag fee and being forced to give up my seat, this experience fell well below acceptable customer service standards. I would appreciate a review of this situation and appropriate compensation.

It was costly and difficult to check in. $85 to take a small suitcase with me, carry on or checked and $75 on the return trip, Plus $25 if I didn't check my self in check in $25, because I couldn't do it on the kiosk. Small very uncomfortable seats, waited on the runway for near an hour each way. It was my worst flight to date.

It was ok. It was expensive to check 2 bags ($75.00 per bag), and then it took a long time to wait for shuttle to take us from one terminal to the terminal where the plane was taking off at LAX. And all of this for a flight where we had to pay for any food or drink that was not water.

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

Information on your arrival and departure airports