FFL Helper
Chicago CHI
$175
SAT → ORD · Frontier Airlines
FFL Helper / San Antonio / Chicago / September 2026
SAT → CHI · 2026-09
San Antonio to Chicago in September 2026
Dated one-way fares from San Antonio to Chicago in September 2026. Use the calendar to see which days are cheaper.
Lowest this month
$175
Highest this month
$175
Sample fare
$175
Airports
SAT–ORD
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Other months: September 2026 · Full route
September 2026 price calendar
September 2026
From $175
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$175
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Dated fares
Booking SAT to CHI in September 2026
This page is only September 2026 on the San Antonio to Chicago 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 Chicago in September 2026.