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Cheap flights from Philadelphia (PHL) to Austin (AUS)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from Philadelphia (PHL) to Austin (AUS)

How to find the cheapest flight from Philadelphia (PHL) to Austin (AUS)
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How to find the cheapest flight from Philadelphia (PHL) to Austin (AUS)
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How to find the cheapest flight from Philadelphia (PHL) to Austin (AUS)
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Cheap flights from Philadelphia to Austin in December 2025 , January 2026

22 Dec - 12 Jan $ 206.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
1 STOPS
PHL
Philadelphia
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22 Dec - 08 Jan $ 206.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
1 STOPS
PHL
Philadelphia
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21 Dec - 05 Jan $ 463.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
1 STOPS
PHL
Philadelphia
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Last minute flights from Philadelphia to Austin

22 Dec - 01 Jan $ 338.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
2 STOPS
PHL
Philadelphia
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25 Dec - 31 Dec $ 556.00
PHL
Philadelphia
United Airlines
1 STOPS
AUS
Austin
AUS
Austin
United Airlines
1 STOPS
PHL
Philadelphia
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25 Dec - 31 Dec $ 602.00
PHL
Philadelphia
United Airlines
1 STOPS
AUS
Austin
AUS
Austin
United Airlines
1 STOPS
PHL
Philadelphia
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One-way flights to Austin from Philadelphia

5:10 AM - 3:35 PM
Frontier Airlines
1 Stops
13h 5m
PHL - AUS
$ 127
Kiwi
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8:36 PM - 9:00 PM
Frontier Airlines
1 Stops
28h 38m
PHL - AUS
$ 148
Kiwi
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12:45 PM - 4:20 PM
United Airlines
1 Stops
5h 36m
PHL - AUS
$ 485
Kiwi
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How to find the cheapest flight from Philadelphia (PHL) to Austin (AUS)

Related info for your journey
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How to find the cheapest flight from Philadelphia (PHL) to Austin (AUS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to Austin (AUS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.