FFL Helper
San Juan SJU
$231
SAT → SJU · Frontier Airlines
FFL Helper / San Antonio / San Juan / September 2026
SAT → SJU · 2026-09
San Antonio to San Juan in September 2026
Dated one-way fares from San Antonio to San Juan in September 2026. Use the calendar to see which days are cheaper.
Lowest this month
$231
Highest this month
$231
Sample fare
$231
Airports
SAT–SJU
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Other months: September 2026 · Full route
September 2026 price calendar
September 2026
From $231
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$231
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Dated fares
Booking SAT to SJU in September 2026
This page is only September 2026 on the San Antonio to San Juan 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 Antonio to San Juan in September 2026.