Route Price Intelligence
Cheap Flights From St. Louis to San Juan
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$316
Deals From
$276
Usually Costs
$276 – $381
Lowest We've Seen
$171
Based on 8,519 price pointshigh confidence
Monthly Price Guide
Jan
$274
Feb
$244
Mar
$270
Apr
$239
May
$252
Jun
$326
Jul
$326
Aug
$252
Sep
$246
Oct
$258
Nov
$369
Dec
$472
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 $239. The most expensive month tends to be December at around $472. For the best deals, consider flying in April, February, September.
Cheapest Fare Found (Last 90 Days)
The lowest round-trip price available on each day we checked
Best: $17180 price checksWorst: $222