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 – $352
Lowest We've Seen
$171
Based on 3,962 price pointshigh confidence
Monthly Price Guide
Jan
$342
Feb
$336
Mar
$880
Apr
$261
May
$306
Jun
$306
Jul
$321
Aug
$306
Sep
$336
Oct
$336
Nov
$347
Dec
$456
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 March at around $880. For the best deals, consider flying in April, May, June.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $17674 price checksWorst: $222