Cheap Flights from San Antonio to St. Louis
Browse current best options from San Antonio. Become a member to unlock all deals and get alerts when new deals appear.
Deals from
San Antonio
RatePunk searches hundreds of travel sites at once for deals on flights to St. Louis
Prices updated 1 day ago
456 airlines compared
80%+ AI score for best value
Fares are subject to change and may not be available for all dates. (Data last updated Sep 2, 2026.)
Today’s best flight deals from San Antonio to St. Louis
Explore current cheapest deals departing from San Antonio to St. Louis
2026-09-22 – 2026-09-29
SAT - St. Louis
70% AI deal score
$283
$221
Round trip
2026-09-25 – 2026-09-28
SAT - St. Louis
71% AI deal score
$299
$223
Round trip
2026-09-25 – 2026-09-30
SAT - St. Louis
71% AI deal score
$294
$223
Round trip
2026-09-27 – 2026-09-30
SAT - St. Louis
71% AI deal score
$298
$223
Round trip
2026-09-21 – 2026-09-23
SAT - St. Louis
72% AI deal score
$305
$223
Round trip
2026-09-21 – 2026-09-26
SAT - St. Louis
66% AI deal score
$295
$231
Round trip
2026-09-14 – 2026-09-21
SAT - St. Louis
70% AI deal score
$309
$240
Round trip
2026-09-25 – 2026-09-26
SAT - St. Louis
65% AI deal score
$300
$240
Round trip
2026-09-15 – 2026-09-19
SAT - St. Louis
71% AI deal score
$322
$241
Round trip
2026-09-17 – 2026-09-20
SAT - St. Louis
66% AI deal score
$313
$242
Round trip
