Earn point on your loyalty program!arrow arc left

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

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Philadelphia (PHL) to Austin (AUS)

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.
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.

Cheap flights from Philadelphia to Austin in August , September 2026

29 Aug - 24 Sep $ 285.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
1 STOPS
PHL
Philadelphia
Pick dates
19 Aug - 08 Sep $ 317.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
1 STOPS
PHL
Philadelphia
Pick dates
26 Aug - 10 Sep $ 456.00
PHL
Philadelphia
JetBlue Airways
1 STOPS
AUS
Austin
AUS
Austin
JetBlue Airways
1 STOPS
PHL
Philadelphia
Pick dates

Last minute flights from Philadelphia to Austin

26 Aug - 01 Sep $ 369.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
1 STOPS
PHL
Philadelphia
Pick dates
29 Aug - 31 Aug $ 370.00
PHL
Philadelphia
Frontier Airlines
1 STOPS
AUS
Austin
AUS
Austin
Frontier Airlines
1 STOPS
PHL
Philadelphia
Pick dates
27 Aug - 31 Aug $ 695.00
PHL
Philadelphia
United Airlines
1 STOPS
AUS
Austin
AUS
Austin
United Airlines
1 STOPS
PHL
Philadelphia
Pick dates

One-way flights to Austin from Philadelphia

8:30 AM - 3:10 PM
Frontier Airlines
1 Stops
9h 9m
PHL - AUS
$ 177
Kiwi
Pick dates
8:30 AM - 3:10 PM
Frontier Airlines
1 Stops
9h 9m
PHL - AUS
$ 177
Kiwi
Pick dates
8:00 AM - 11:55 AM
JetBlue Airways
1 Stops
6h 59m
PHL - AUS
$ 255
Kiwi
Pick dates

How to find the cheapest flight from Philadelphia (PHL) to Austin (AUS)

Related info for your journey
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.
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.