Houston to San Antonio in September 2026

Dated one-way fares from Houston to San Antonio in September 2026. Use the calendar to see which days are cheaper.

Lowest this month $121

Highest this month $225

Sample fare $121

Airports HOU–SAT

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September 2026 price calendar

From $121 · up to $225

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $225 2 $173 3 $173 4 $173 5 $173 6 $173 7 $173 8 $173 9 $173 10 $173 11 $173 12 $173 13 $173 14 $173 15 $173 16 $173 17 $173 18 $173 19 $121

San Antonio SAT

$121

Sep 19, 10:40am · 1h · 0 stops

HOU → SAT · Southwest Airlines

This page is only September 2026 on the Houston to San Antonio 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 Houston to San Antonio in September 2026.