FFL Helper
Austin AUS
$169
SAN → AUS · Frontier Airlines
FFL Helper / San Diego / Austin / September 2026
SAN → AUS · 2026-09
San Diego to Austin in September 2026
Dated one-way fares from San Diego to Austin in September 2026. Use the calendar to see which days are cheaper.
Lowest this month
$169
Highest this month
$169
Sample fare
$129
Airports
SAN–AUS
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Other months: August 2026 · September 2026 · Full route
September 2026 price calendar
September 2026
From $169
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$169
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Dated fares
Booking SAN to AUS in September 2026
This page is only September 2026 on the San Diego to Austin route. Open the full route if you want the next months side by side.
Prices move as seats sell. Confirm the live itinerary before you book San Diego to Austin in September 2026.