Skyscanner home

175 € Cheap Flights from Philadelphia International to San Antonio International

Compare Philadelphia International to San Antonio International flight deals

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

Book the best San Antonio International fare with no extra fees

Flight deals from Philadelphia International to San Antonio International

Looking for a cheap last-minute deal or the best return flight from Philadelphia International Airport to San Antonio International Airport? If you want to travel next month, return fares start from 178 €. Find the lowest prices on one-way and return tickets right here.
San Antonio.175 € per passenger.Departing Sat, 23 May, returning Fri, 29 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sat, 23 May, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Fri, 29 May, arriving in Philadelphia International.Price includes taxes and charges.From 175 €, select.
San Antonio.178 € per passenger.Departing Wed, 3 Jun, returning Sat, 6 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Wed, 3 Jun, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Sat, 6 Jun, arriving in Philadelphia International.Price includes taxes and charges.From 178 €, select.
San Antonio.179 € per passenger.Departing Tue, 7 Jul, returning Tue, 14 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Tue, 7 Jul, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Tue, 14 Jul, arriving in Philadelphia International.Price includes taxes and charges.From 179 €, select.
San Antonio.197 € per passenger.Departing Fri, 31 Jul, returning Tue, 4 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Fri, 31 Jul, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Tue, 4 Aug, arriving in Philadelphia International.Price includes taxes and charges.From 197 €, select.
San Antonio.203 € per passenger.Departing Sat, 15 Aug, returning Sat, 22 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sat, 15 Aug, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Sat, 22 Aug, arriving in Philadelphia International.Price includes taxes and charges.From 203 €, select.
San Antonio.203 € per passenger.Departing Thu, 28 May, returning Sat, 6 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Thu, 28 May, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Sat, 6 Jun, arriving in Philadelphia International.Price includes taxes and charges.From 203 €, select.
San Antonio.209 € per passenger.Departing Sun, 28 Jun, returning Wed, 1 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sun, 28 Jun, arriving in San Antonio International.Inbound indirect flight with Frontier Airlines, departs from San Antonio International on Wed, 1 Jul, arriving in Philadelphia International.Price includes taxes and charges.From 209 €, select.
San Antonio.213 € per passenger.Departing Sat, 5 Sep, returning Mon, 7 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Philadelphia International on Sat, 5 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 213 €, select.
San Antonio.359 € per passenger.Departing Sat, 26 Sep, returning Sat, 3 Oct.Return flight with United.Outbound indirect flight with United, departs from Philadelphia International on Sat, 26 Sep, arriving in San Antonio International.Inbound indirect flight with United, departs from San Antonio International on Sat, 3 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 359 €, select.
San Antonio.359 € per passenger.Departing Sat, 31 Oct, returning Sat, 7 Nov.Return flight with United.Outbound indirect flight with United, departs from Philadelphia International on Sat, 31 Oct, arriving in San Antonio International.Inbound indirect flight with United, departs from San Antonio International on Sat, 7 Nov, arriving in Philadelphia International.Price includes taxes and charges.From 359 €, select.
San Antonio.375 € per passenger.Departing Wed, 23 Dec, returning Wed, 30 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Wed, 23 Dec, arriving in San Antonio International.Inbound indirect flight with Delta, departs from San Antonio International on Wed, 30 Dec, arriving in Philadelphia International.Price includes taxes and charges.From 375 €, select.
San Antonio.404 € per passenger.Departing Thu, 1 Oct, returning Wed, 7 Oct.Return flight with United.Outbound indirect flight with United, departs from Philadelphia International on Thu, 1 Oct, arriving in San Antonio International.Inbound indirect flight with United, departs from San Antonio International on Wed, 7 Oct, arriving in Philadelphia International.Price includes taxes and charges.From 404 €, select.
San Antonio.404 € per passenger.Departing Wed, 11 Nov, returning Fri, 13 Nov.Return flight with United.Outbound indirect flight with United, departs from Philadelphia International on Wed, 11 Nov, arriving in San Antonio International.Inbound indirect flight with United, departs from San Antonio International on Fri, 13 Nov, arriving in Philadelphia International.Price includes taxes and charges.From 404 €, select.
San Antonio.483 € per passenger.Departing Mon, 21 Dec, returning Thu, 7 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Philadelphia International on Mon, 21 Dec, arriving in San Antonio International.Inbound indirect flight with Delta, departs from San Antonio International on Thu, 7 Jan, arriving in Philadelphia International.Price includes taxes and charges.From 483 €, select.

Find the cheapest month to fly from Philadelphia International 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 International to San Antonio International flights are currently cheapest in May.
May
from 175 €
Jun
from 178 €
Jul
from 179 €
Aug
from 203 €
Sep
from 213 €
Oct
from 404 €
Nov
from 404 €
Dec
from 375 €
Jan
Find prices
Feb
Find prices
Mar
Find prices
Apr
Find prices

Direct flights from Philadelphia International to San Antonio International

Philadelphia International to San Antonio International: Alternative routes

Compare routes from Philadelphia International 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 175 €
Search flights

Philadelphia to San Antonio: Flight information

The things to know before you go.
Cheapest flight found175 €
Cheapest month to flyMay
Average flight time4 hrs, 4 mins
Most popular airlineAmerican Airlines
Average flights per week16

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

The best price we found for a return flight from Philadelphia International to San Antonio International is 175 €. 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 4 minutes is the average flight time from Philadelphia International to San Antonio International.
American Airlines and Qatar Airways fly direct from Philadelphia International to San Antonio International.
As of May 2026, there are 16 flights per week flying from Philadelphia International to San Antonio International.
The cheapest month to fly from Philadelphia International to San Antonio International is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Philadelphia International Airport to San Antonio International Airport on Saturday, 23 May 2026.
Yes – the average flight time is 4 hours and 4 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.
Currently, Frontier Airlines offers the cheapest flight tickets to San Antonio International.

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

  • Book a direct flight from Philadelphia International Airport to San Antonio International Airport and you'll be travelling for an average of 3 hours 45 minutes.

  • San Antonio is one hour behind Philadelphia and follows the UTC-5 timezone.

  • Flights from PHL to SAT start from 08:20 — the earliest with American Airlines. The last service of the day is at 10:37 with American Airlines. Overall, you can choose from three weekly Philadelphia International Airport to San Antonio International Airport flights.

  • Your PHL to SAT flight won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • Flying during a peak time like August? Major public holidays and other popular periods can result in longer queues at airport checkpoints. Play it safe and arrive up to four hours before international flights and two hours before domestic departures.

  • Jetting into San Antonio (and then discovering more of United States!) is a breeze with American Airlines. This popular carrier offers direct flights from Philadelphia International Airport to San Antonio International Airport.

  • Most travellers choose to travel with American Airlines on this route.

  • If you'd like to break up your flight, just deselect 'Direct flights only' when searching for your ticket from Philadelphia International Airport to San Antonio International Airport. Here are the top stopovers between PHL and SAT:

    • Nashville International Airport

    • Hartsfield-Jackson Atlanta International Airport

    • George Bush Intercontinental Airport

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

  • 73 € is the lowest price for a one-way Philadelphia International Airport to San Antonio International Airport flight. Return flights start at 175 €. These fares may change depending on demand and availability.

  • Book nine months before flying. After looking at the numbers on our calendar, this is how far you should book ahead to secure cheap tickets from PHL to SAT.

  • The cheapest month for flights from Philadelphia International Airport to San Antonio International Airport is August. Use the 'Whole month' tool to find the lowest airfares if you have a flexible schedule.

  • Cut down on the time spent looking for cheap flights from PHL to SAT by setting up a Price Alert. We'll send you an email or notification on the app when a lower fare becomes available.

  • Secure the perfect flight for you by using the filters. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Philadelphia International Airport to San Antonio International Airport, use the 'Sort by' tool. You can also filter by airline, departure and arrival times, and number of stops.

Handy information about Philadelphia International Airport (PHL)

  • The address for PHL is Industrial Highway and Island Road.

  • 78.93% of flights that take off from Philadelphia International Airport land at their destination on schedule.

  • Philadelphia International Airport is about 19 kilometres from central Philadelphia. If you're driving, ride-sharing or catching a cab from the centre, it'll take 15 minutes or so to get there, depending on the traffic.

  • Expect a trip time of about 45 minutes on public transport.

  • Get your journey off to a hassle-free start by staying near PHL. Whether you're catching an early flight from Philadelphia International Airport to San Antonio International Airport or just don't like being rushed, these hotels are perfect:

Arriving at San Antonio International Airport (SAT)

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

  • The address for SAT is 9800 Airport Boulevard.

  • San Antonio International Airport to central San Antonio has a drive time of around 20 minutes. It's approximately 19 kilometres away.

  • If you're taking public transport, expect a journey time of about 1 hour 30 minutes.

When to fly to San Antonio International Airport (SAT)

  • The quietest month for a flight from Philadelphia International Airport to San Antonio International Airport is April, while July is the most popular. Pick the best time to go to San Antonio based on whether you prefer a more relaxed vibe or a faster pace.

  • Before locking in your flight from Philadelphia International Airport to San Antonio International Airport, think about the type of weather you like. August is the warmest month in San Antonio, with the temperature ranging from 23ºC (73ºF) to 40ºC (104ºF).

  • For cooler conditions, search for a cheap ticket from PHL to SAT in January. Temperatures average between 3ºC (37ºF) and 20ºC (68ºF) then.

Explore more of United States

  • Houston is just one of the many places in United States waiting to be discovered once you've seen San Antonio. Around 306 kilometres away to the east, check out popular attractions including The Houston Museum of Natural Science, The Museum of Fine Arts, Houston, Beck Building and Hermann Park.

  • If you're ready to explore another side of United States, head for Dallas, about 402 kilometres north-east of San Antonio. Dallas Arboretum and Botanical Gardens, Perot Museum of Nature and Science and Dallas Museum of Art are key highlights.

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 45 days.