$79 Cheap Flights from Austin (AUS) to Philadelphia (PHL)

View $79 flight on Fri, Aug 15, 2025Opens in a new window

Popular airlines from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL)

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Cheap Flights from Austin to Philadelphia (AUS-PHL)

Prices were available within the past 7 days and start at $79 for one-way flights and $137 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Fri, Aug 15 - Sat, Aug 23
AUS
Austin
PHL
Philadelphia
$137 Roundtrip, found 1 day ago
$137
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Fri, Aug 15 from Austin to Philadelphia, returning Sat, Aug 23, priced at $137 found 1 day ago
American Airlines
Tue, Aug 12 - Tue, Aug 19
AUS
Austin
PHL
Philadelphia
$139 Roundtrip, found 2 hours ago
$139
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Tue, Aug 12 from Austin to Philadelphia, returning Tue, Aug 19, priced at $139 found 2 hours ago
Southwest Airlines
Wed, Sep 3 - Thu, Sep 4
AUS
Austin
PHL
Philadelphia
$147 Roundtrip, found 1 day ago
$147
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, Sep 3 from Austin to Philadelphia, returning Thu, Sep 4, priced at $147 found 1 day ago
American Airlines
Sat, Aug 9 - Mon, Aug 11
AUS
Austin
PHL
Philadelphia
$149 Roundtrip, found 5 hours ago
$149
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Sat, Aug 9 from Austin to Philadelphia, returning Mon, Aug 11, priced at $149 found 5 hours ago
American Airlines
Sat, Aug 23 - Sat, Aug 30
AUS
Austin
PHL
Philadelphia
$150 Roundtrip, found 2 hours ago
$150
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Sat, Aug 23 from Austin to Philadelphia, returning Sat, Aug 30, priced at $150 found 2 hours ago
Southwest Airlines
Sat, Aug 30 - Tue, Sep 2
AUS
Austin
PHL
Philadelphia
$158 Roundtrip, found 1 hour ago
$158
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Sat, Aug 30 from Austin to Philadelphia, returning Tue, Sep 2, priced at $158 found 1 hour ago
American Airlines
Sat, Aug 9 - Mon, Aug 11
AUS
Austin
PHL
Philadelphia
$160 Roundtrip, found 5 hours ago
$160
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Sat, Aug 9 from Austin to Philadelphia, returning Mon, Aug 11, priced at $160 found 5 hours ago
Spirit Airlines
Wed, Aug 6 - Wed, Aug 20
AUS
Austin
PHL
Philadelphia
$165 Roundtrip, found 3 days ago
$165
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Wed, Aug 6 from Austin to Philadelphia, returning Wed, Aug 20, priced at $165 found 3 days ago
Frontier Airlines
Thu, Jul 24 - Thu, Jul 31
AUS
Austin
PHL
Philadelphia
$170 Roundtrip, found 8 hours ago
$170
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Thu, Jul 24 from Austin to Philadelphia, returning Thu, Jul 31, priced at $170 found 8 hours ago
Delta
Sat, Aug 30 - Tue, Sep 2
AUS
Austin
PHL
Philadelphia
$237 Roundtrip, found 1 hour ago
$237
Roundtrip
found 1 hour ago
Select Delta flight, departing Sat, Aug 30 from Austin to Philadelphia, returning Tue, Sep 2, priced at $237 found 1 hour ago

Find the cheapest month to fly from Austin (AUS) to Philadelphia (PHL)

February is typically the cheapest month to fly

From $118 - $433 per traveler.

Graph displaying average flight prices per month

Flights from Austin (AUS) to Philadelphia (PHL)
Origin airport
Austin-Bergstrom Intl.
Destination airport
Philadelphia Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$136
Distance
1428 mi
Average flight time
4 hours 34 mins

Austin to Philadelphia Flights

The cheapest times to fly from Austin to Philadelphia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Austin to Philadelphia are during the month of August. You can find some of the cheapest flights from Austin to Philadelphia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Austin to Philadelphia

Sunday is one of the best days to book for cheap flights from Austin to Philadelphia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Austin to Philadelphia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Austin to Philadelphia in 2025. You can also book with separate airlines for your outbound and return journeys, from $79 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Austin to Philadelphia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Austin to Philadelphia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL) cost?
Cheap return fares from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL) start at $139. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a American Airlines flight leaving AUS on July 30 2025 and touching down at PHL. The price was last updated on July 8 2025 and has not changed since.
What is the cheapest month to fly from AUS to PHL?
The cheapest flights from AUS to PHL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL)?
Catch a nonstop flight with American Airlines and go straight from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL).
What is the cheapest airline that flies from AUS to PHL?
At the moment, the cheapest carrier operating one-way flights from AUS to PHL is Frontier Airlines. You can take off on this route from $114. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from AUS on October 2 2025. Prices were last updated on July 8 2025 and have not changed since.
How many flights per day from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL)?
On average, just 1 nonstop flight departs daily from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL). Need other options? Use our filter tool to find flights with layovers and add an extra destination to your journey.
What are the most popular departure times for flights from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL)?
The 1 PM departures from AUS to PHL see the highest demand. They can also be more expensive. If you're hoping to save money, pick a less crowded time to fly.
What day of the week has the most flights from AUS to PHL?
Friday offers the most flights from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL). Consider taking off on this day and you'll have the best chance of finding a departure that fits your plans.
What is the earliest flight from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL)?
The earliest flight out of Austin-Bergstrom Intl. Airport (AUS) is at around 6:29AM UTC-6. Catch this flight and you'll touch down at Philadelphia Intl. Airport (PHL) at approximately 10:52AM UTC-5. The total time in the air is 3h 23m.
How long does it take to fly from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL)?
It takes about 3 hours and 22 minutes to fly the 1,450 mi from AUS to PHL.
What airline has the least delays from AUS to PHL?
Consider booking with Frontier Airlines if you'd like to fly straight from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL) without any delays. This carrier has the strongest track record for punctuality, with an on-time performance of 90%. Want to be notified if anything changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL)?
To avoid possible delays on the Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL) route, aim to travel before 3 PM. Flights after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Philadelphia from Austin-Bergstrom Intl. Airport (AUS)?
Compare your flight options from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL). This is the only Philadelphia airport you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL) last-minute?
Booking your flight from AUS to PHL right before your getaway is usually more expensive. However, if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book an AUS to PHL flight and hotel package?
You can save money by securing an AUS to PHL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've chosen your ideal flights and accommodations, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Austin-Bergstrom Intl. Airport (AUS) to Philadelphia Intl. Airport (PHL)?
It's generally possible to reschedule or cancel your AUS to PHL flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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