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
$296
Usually Costs
$296 – $406
Lowest We've Seen
$171
Based on 8,850 price pointshigh confidence
Monthly Price Guide
Jan
$460
Feb
$576
Mar
$346
Apr
$246
May
$296
Jun
$346
Jul
$367
Aug
$316
Sep
$316
Oct
$337
Nov
$425
Dec
$558
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 February at around $576. For the best deals, consider flying in April, May, August.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $17189 price checksWorst: $222