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 7 days ago
483 airlines compared
80%+ AI score for best value
Fares are subject to change and may not be available for all dates. (Data last updated Oct 26, 2026.)
Today’s best flight deals from San Diego to St. Louis
Explore current cheapest deals departing from San Diego to St. Louis
2026-11-18 – 2026-12-02
SAN - St. Louis
80% AI deal score
$253
$129
Round trip
2026-11-18 – 2026-12-09
SAN - St. Louis
85% AI deal score
$241
$130
Round trip
2026-11-18 – 2026-12-07
SAN - St. Louis
85% AI deal score
$242
$131
Round trip
2026-11-18 – 2026-12-14
SAN - St. Louis
85% AI deal score
$240
$131
Round trip
2026-12-06 – 2026-12-09
SAN - St. Louis
83% AI deal score
$312
$131
Round trip
2026-11-17 – 2026-12-02
SAN - St. Louis
80% AI deal score
$248
$131
Round trip
2026-11-18 – 2026-12-12
SAN - St. Louis
85% AI deal score
$240
$132
Round trip
2026-11-18 – 2026-12-05
SAN - St. Louis
85% AI deal score
$243
$132
Round trip
2027-01-12 – 2027-02-01
SAN - St. Louis
79% AI deal score
$199
$147
Round trip
2026-12-01 – 2026-12-04
SAN - St. Louis
80% AI deal score
$313
$147
Round trip
