Route Price Intelligence
Cheap Flights From St. Louis to San Juan
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$338
Deals From
$306
Usually Costs
$306 – $408
Lowest We've Seen
$171
Based on 8,855 price pointshigh confidence
Monthly Price Guide
Jan
$438
Feb
$510
Mar
$293
Apr
$246
May
$306
Jun
$321
Jul
$356
Aug
$306
Sep
$336
Oct
$353
Nov
$436
Dec
$541
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 $246. The most expensive month tends to be December at around $541. For the best deals, consider flying in April, March, May.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $17689 price checksWorst: $222