Route Price Intelligence
Cheap Flights From St. Louis to San Juan
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$336
Deals From
$306
Usually Costs
$306 – $342
Lowest We've Seen
$171
Based on 269 price pointshigh confidence
Monthly Price Guide
Jan
$342
Feb
—
Mar
—
Apr
$261
May
$336
Jun
$312
Jul
$306
Aug
$276
Sep
$336
Oct
$336
Nov
$342
Dec
$413
Cheapest Average Expensive
Best Time to Fly from St. Louis to San Juan
The cheapest time to fly from St. Louis to San Juan is typically April, when fares average around $261. The most expensive month tends to be December at around $413. For the best deals, consider flying in April, August, July.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $17669 price checksWorst: $222