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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 January , February 2026

28 Jan - 07 Feb $ 128.00
PHL
Philadelphia
Spirit Airlines
1 STOPS
AUS
Austin
AUS
Austin
Spirit Airlines
1 STOPS
PHL
Philadelphia
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17 Jan - 08 Feb $ 811.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
1 STOPS
PHL
Philadelphia
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21 Jan - 02 Feb $ 854.00
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

28 Jan - 31 Jan $ 154.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
1 STOPS
PHL
Philadelphia
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21 Jan - 31 Jan $ 480.00
PHL
Philadelphia
United Airlines
1 STOPS
AUS
Austin
AUS
Austin
United Airlines
1 STOPS
PHL
Philadelphia
Pick dates
21 Jan - 31 Jan $ 480.00
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

12:39 PM - 7:15 PM
Spirit Airlines
1 Stops
9h 56m
PHL - AUS
$ 60
Kiwi
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6:30 AM - 12:45 PM
United Airlines
1 Stops
10h 16m
PHL - AUS
$ 427
Kiwi
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12:27 PM - 4:20 PM
United Airlines
1 Stops
5h 58m
PHL - AUS
$ 483
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.