Austin (AUS) to Philadelphia (PHL) flight deal from $139 USD in economy class – flightdeals.net

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American Airlines

AAAmerican Airlines

One Way•Economy

Austin-Bergstrom International Ai

Austin, United States

Philadelphia International Airport

Philadelphia, United States

$328 USD

-58%$139 USD

Verified Nov 29, 2025 at 6:54 PM

January 2026

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29 30 31 1$174 2$306 3$320 4$325 5$204 6$204 7$204 8$226 9$260 10$204 11$226 12$204 13$204 14$204 15$260 16$145 17$139 18$145 19$145 20$139 21$226 22$226 23$204 24$204 25$226 26$204 27$204 28$204 29$244 30$260 31$204 1$226

Rare Availability

6% of dates checked are available within 10% of the lowest price

Saturday, January 17th, 2026

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