Cheap Flights from San Diego to St. Louis
Browse current best options from San Diego. Become a member to unlock all deals and get alerts when new deals appear.
Deals from
San Diego
RatePunk searches hundreds of travel sites at once for deals on flights to St. Louis
Prices updated 1 day ago
451 airlines compared
80%+ AI score for best value
Fares are subject to change and may not be available for all dates. (Data last updated Aug 18, 2026.)
Today’s best flight deals from San Diego to St. Louis
Explore current cheapest deals departing from San Diego to St. Louis
2026-09-15 – 2026-09-30
SAN - St. Louis
81% AI deal score
$232
$156
Round trip
2026-09-12 – 2026-09-14
SAN - St. Louis
84% AI deal score
$280
$158
Round trip
2026-09-03 – 2026-09-08
SAN - St. Louis
82% AI deal score
$278
$166
Round trip
2026-10-02 – 2026-10-05
SAN - St. Louis
84% AI deal score
$356
$182
Round trip
2026-11-12 – 2026-11-15
SAN - St. Louis
82% AI deal score
$300
$182
Round trip
2026-10-05 – 2026-10-28
SAN - St. Louis
80% AI deal score
$290
$184
Round trip
2026-10-26 – 2026-10-28
SAN - St. Louis
84% AI deal score
$357
$184
Round trip
2026-10-26 – 2026-11-18
SAN - St. Louis
81% AI deal score
$303
$184
Round trip
2026-10-14 – 2026-10-28
SAN - St. Louis
81% AI deal score
$309
$185
Round trip
2026-09-11 – 2026-09-16
SAN - St. Louis
80% AI deal score
$276
$186
Round trip
