Cheap flights from Philadelphia to Austin from $43

The cheapest month to fly to Austin from Philadelphia is in August. Flight prices, which tend to average around $219, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in August, then September is your next best option. Flight prices from Philadelphia to Austin during September average around $229.

The cheapest day to depart on your flight to Austin is on a Thursday when prices can be found for as low as $341. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Austin for around $424.

In the afternoon is the cheapest time of day to fly from Philadelphia to Austin when you can find flight prices for as low as $335. Flying to Austin in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Austin are more costly in the evening, with an average ticket price of $431. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Philadelphia to Austin Bergstrom for the best Philadelphia - Austin Bergstrom flight prices

You are more likely to see cheaper flights to Austin from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Austin for around $371 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Austin from Philadelphia for as low as $269 on momondo.

There are 3 cabin classes available to choose from on Philadelphia to Austin Bergstrom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Philadelphia to Austin.

As of February 2026, prices for Philadelphia to Austin flights are approximately 48% cheaper when compared to flights at the same time last year.

Spirit Airlines is the most popular carrier operating from Philadelphia to Austin Bergstrom

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Austin from Philadelphia according to our data. American Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Austin. Keep in mind that there are 6 different airlines that fly to Austin on a routine basis, so you have a few additional options to choose from.

St. Louis (STL) was the most common stop: 75% of momondo users choosing 1-stop flights on this route connected there.

Flights via Atlanta (ATL) offer the lowest average round-trip price of $262.

Flights connecting via St. Louis (STL) have the shortest average one-way travel time: 5h 28m.

Atlanta (ATL) has the shortest average layover time for this route: 0h 54m.

The number of flights available between Philadelphia and Austin is 4 per day as of February 2026. The most frequent departure time is 7:00PM, with 78% of daily flights leaving in the evening.

As of February 2026, there are 33 flights per week flying from Philadelphia to Austin. The most common day of the week flights depart is Mon, with 18% of flights taking off on this day.