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219 € Cheap Flights from Philadelphia to San Antonio International

Compare Philadelphia to San Antonio International flight deals

Find the cheapest month or even day of the year to fly to San Antonio International

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Flight deals from Philadelphia to San Antonio International

Looking for a cheap last-minute deal or the best return flight from Philadelphia to San Antonio International Airport? If you want to travel next month, return fares start from 219 €. Find the lowest prices on one-way and return tickets right here.
San Antonio.219 € per passenger.Departing Thu, 27 Aug, returning Sat, 5 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Thu, 27 Aug, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Sat, 5 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 219 €, select.
San Antonio.219 € per passenger.Departing Mon, 24 Aug, returning Tue, 25 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Mon, 24 Aug, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Tue, 25 Aug, arriving in Philadelphia International.Price includes taxes and charges.From 219 €, select.
San Antonio.219 € per passenger.Departing Thu, 8 Oct, returning Tue, 13 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Thu, 8 Oct, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Tue, 13 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 219 €, select.
San Antonio.219 € per passenger.Departing Thu, 3 Sep, returning Mon, 7 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Thu, 3 Sep, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Mon, 7 Sep, arriving in Philadelphia International.Price includes taxes and charges.From 219 €, select.
San Antonio.277 € per passenger.Departing Thu, 29 Oct, returning Mon, 2 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Thu, 29 Oct, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Mon, 2 Nov, arriving in Philadelphia International.Price includes taxes and charges.From 277 €, select.
San Antonio.281 € per passenger.Departing Mon, 28 Sep, returning Thu, 1 Oct.Return flight with Frontier Airlines and Breeze Airways.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Mon, 28 Sep, arriving in San Antonio International.Inbound indirect flight with Breeze Airways, departs from San Antonio International on Thu, 1 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 281 €, select.
San Antonio.294 € per passenger.Departing Wed, 4 Nov, returning Sun, 8 Nov.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Wed, 4 Nov, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Sun, 8 Nov, arriving in Philadelphia International.Price includes taxes and charges.From 294 €, select.
San Antonio.324 € per passenger.Departing Tue, 8 Dec, returning Mon, 14 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Tue, 8 Dec, arriving in San Antonio International.Inbound indirect flight with Delta, departs from San Antonio International on Mon, 14 Dec, arriving in Philadelphia International.Price includes taxes and charges.From 324 €, select.
San Antonio.331 € per passenger.Departing Wed, 29 Jul, returning Wed, 5 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Wed, 29 Jul, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 5 Aug, arriving in Philadelphia International.Price includes taxes and charges.From 331 €, select.
San Antonio.337 € per passenger.Departing Tue, 28 Jul, returning Fri, 31 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Tue, 28 Jul, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Fri, 31 Jul, arriving in Philadelphia International.Price includes taxes and charges.From 337 €, select.
San Antonio.361 € per passenger.Departing Thu, 14 Jan, returning Thu, 28 Jan.Return flight with United.Outbound indirect flight with United, departs from Philadelphia International on Thu, 14 Jan, arriving in San Antonio International.Inbound indirect flight with United, departs from San Antonio International on Thu, 28 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 361 €, select.
San Antonio.361 € per passenger.Departing Thu, 31 Dec, returning Tue, 5 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Thu, 31 Dec, arriving in San Antonio International.Inbound indirect flight with Delta, departs from San Antonio International on Tue, 5 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 361 €, select.
San Antonio.373 € per passenger.Departing Wed, 25 Nov, returning Wed, 2 Dec.Return flight with United.Outbound indirect flight with United, departs from Philadelphia International on Wed, 25 Nov, arriving in San Antonio International.Inbound indirect flight with United, departs from San Antonio International on Wed, 2 Dec, arriving in Philadelphia International.Price includes taxes and charges.From 373 €, select.
San Antonio.385 € per passenger.Departing Sat, 6 Feb, returning Sat, 13 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Sat, 6 Feb, arriving in San Antonio International.Inbound indirect flight with Delta, departs from San Antonio International on Sat, 13 Feb, arriving in Philadelphia International.Price includes taxes and charges.From 385 €, select.
San Antonio.396 € per passenger.Departing Sat, 13 Mar, returning Sat, 20 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Sat, 13 Mar, arriving in San Antonio International.Inbound indirect flight with Delta, departs from San Antonio International on Sat, 20 Mar, arriving in Philadelphia International.Price includes taxes and charges.From 396 €, select.
San Antonio.444 € per passenger.Departing Mon, 23 Nov, returning Sun, 3 Jan.Return flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Philadelphia International on Mon, 23 Nov, arriving in San Antonio International.Inbound indirect flight with Southwest Airlines, departs from San Antonio International on Sun, 3 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 444 €, select.

Find the cheapest month to fly from Philadelphia to San Antonio International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to San Antonio International flights are currently cheapest in August.
Jul
from 337 €
Aug
from 219 €
Sep
from 219 €
Oct
from 219 €
Nov
from 294 €
Dec
from 324 €
Jan
from 361 €
Feb
from 385 €
Mar
from 396 €
Apr
from 495 €
May
Find prices
Jun
from 475 €

Direct flights from Philadelphia to San Antonio International

Philadelphia to San Antonio International: Alternative routes

Compare routes from Philadelphia to San Antonio below. You may find an airport to fly into that's cheaper, faster, or easier than San Antonio International.

San Antonio International

13km from central San Antonio
ClosestCheapest
from 219 €
Search flights

Philadelphia to San Antonio: Flight information

The things to know before you go.
Cheapest flight found219 €
Cheapest month to flyAugust
Average flight time4 hrs, 3 mins
Most popular airlineQatar Airways
Average flights per week12

Finding cheap flights from Philadelphia to San Antonio International: Frequently asked questions

The best price we found for a return flight from Philadelphia to San Antonio International is 219 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 3 minutes is the average flight time from Philadelphia to San Antonio International.
Qatar Airways and American Airlines fly direct from Philadelphia to San Antonio International.
As of July 2026, there are 12 flights per week flying from Philadelphia to San Antonio International.
The cheapest month to fly from Philadelphia to San Antonio International is usually August.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to San Antonio International Airport on Monday, 24 August 2026.
Yes – the average flight time is 4 hours and 3 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Antonio International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Antonio is around 40 days in advance, so don’t leave your flight to the last minute.

The cheapest airline that flies to San Antonio International is Frontier Airlines .

Flying from Philadelphia to San Antonio International Airport (SAT): What you need to know

  • Your next big escape starts at Philadelphia's main airport, Philadelphia International Airport (PHL). Explore your options for reserving a flight from Philadelphia to San Antonio International Airport (SAT) leaving from this base.

  • Around 3 hours 55 minutes is how long you'll be travelling on a direct Philadelphia to San Antonio International Airport flight.

  • San Antonio is one hour behind Philadelphia. San Antonio International Airport is located in San Antonio, which is in the UTC-6 timezone.

  • Take your pick of 4 direct services every week between Philadelphia International Airport (PHL) and San Antonio International Airport (SAT). This is the busiest route, with American Airlines offering a 8:14am departure from PHL to SAT.

  • Your flight from Philadelphia to SAT won't wait if you're running late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • Getting on a plane during a peak time like July? High seasons (like Thanksgiving, Christmas/New Year and spring break) can add another hour at check-in and security. Play things extra safe and arrive up to four hours before an international flight and two hours before domestic departures.

Airports in Philadelphia

Philadelphia International Airport (PHL)

  • Philadelphia International Airport (PHL) makes it easy to travel directly to your destination. Nonstop flights from Philadelphia to San Antonio International Airport (SAT) leave from this terminal.

  • When jetting out of PHL, you can take a direct flight from Philadelphia to San Antonio International Airport with American Airlines.

  • The majority of travellers choose to fly with American Airlines between PHL and SAT.

  • The carrier with the most consistent on-time arrival rate on this route is American Airlines.

  • Travelling from central Philadelphia to PHL takes about 30 minutes on public transport. If you ride-share, drive or get a taxi, you'll cover the 18 kilometres in 20 minutes or so, depending on traffic conditions.

  • Have an early flight from Philadelphia to San Antonio International Airport? Avoid rushing to the terminal (and sneak in some bonus sleep) by choosing one of these hotels near Philadelphia International Airport:

  • 77% of flights taking off from Philadelphia International Airport make it to their destination on time.

  • You'll find PHL at 8500 Essington Ave.

Trenton-Mercer Airport (TTN)

  • Using public transport, you can travel from central Philadelphia to TTN in around 1 hour 35 minutes. The terminal is roughly 48 kilometres away, and making the trip by car will take approximately 40 minutes.

  • Taking off bright and early? You might like to check in to one of these accommodation options near Trenton-Mercer Airport the day before your Philadelphia to SAT flight:

  • 76% of flights leaving Trenton-Mercer Airport make it to their destination as expected.

  • The address for TTN is Scotch Road, Terminal Building.

About San Antonio International Airport (SAT)

Getting from San Antonio International Airport (SAT) to central San Antonio

  • San Antonio International Airport is around 14 kilometres from central San Antonio. It takes around 20 minutes or so to get to the city by car.

  • If you're using public transport, expect a journey of roughly 50 minutes.

How to find the cheapest flights from Philadelphia to San Antonio International Airport (SAT)

  • 110 € is the lowest price for a one-way ticket from Philadelphia to San Antonio International Airport. A return flight starts from 219 €. These prices can change depending on demand.

  • To snap up cheap flights from Philadelphia to SAT, book your plane ticket three months ahead of your planned departure.

  • August is when you're most likely to find a fantastic deal on a Philadelphia to San Antonio International Airport ticket. If you're looking to travel during a different time of year, the 'Whole month' tool will show you the lowest prices for each month.

  • Snapping up a cheap plane ticket from Philadelphia to SAT is a breeze with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch when prices go down.

  • Uncover a great deal on a flight from Philadelphia to San Antonio International Airport with the help of the filters. Pick your ideal arrival and departure times, airlines and number of stops. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest.'

The best time to fly from Philadelphia to San Antonio International Airport (SAT)

  • Picture the kind of break you want when picking your flight dates. December is the quietest month to visit San Antonio. July is when most people book flights from Philadelphia to San Antonio International Airport (SAT), which may be ideal if you enjoy travelling when it's busier.

  • Book a Philadelphia to SAT plane ticket departing in August if you're eager to visit the city during its warmest month. You can expect temperatures in San Antonio to range from 24ºC (75ºF) to 40ºC (104ºF).

  • Look for cheap tickets from Philadelphia to San Antonio International Airport in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 4ºC (39ºF) and 20ºC (68ºF).

More about San Antonio

  • When it comes to searching for somewhere to rest your head, you'll find the top stays in San Antonio right here. Browse these options after you've booked your flight from Philadelphia to San Antonio International Airport:

  • There are loads of fantastic things to do in San Antonio when you're ready to go sightseeing. Start exploring at San Antonio River Walk followed by San Antonio River walk and Alamo Plaza.

Explore more of the United States

  • San Antonio is always a good idea, but there are so many other corners of the United States you should also see. About 105 kilometres northeast of San Antonio, a visit to Austin will keep you busy. Start with popular sights like Texas State Capitol, Austin Museum of Art, Downtown and 360 Bridge.

  • Corpus Christi is another must-experience destination in the United States and is around 225 kilometres southeast of San Antonio. No trip is complete without dropping by USS LEXINGTON, Texas State Aquarium and Bayfront Park.

Plan the rest of your trip from Philadelphia to San Antonio

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.