Route Price Intelligence
Cheap Flights From St. Louis to San Juan
Live pricing benchmarks, monthly patterns, and historical lows for this route.
Typical Price
$396
Great Deal
Under $372
Typical Range
$372 – $444
Lowest We've Seen
$171
Based on 271 price pointshigh confidence
Monthly Price Guide
Jan
$396
Feb
$396
Mar
$436
Apr
$396
May
$396
Jun
$586
Jul
—
Aug
—
Sep
$486
Oct
$323
Nov
$350
Dec
$409
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 October, when fares average around $323. The most expensive month tends to be June at around $586. For the best deals, consider flying in October, November, January.
Typical Price by Travel Month
Median round-trip fare for each month, with the typical price range, from our ongoing tracking of this route
Cheapest month: September14,708 fares analyzedTypical low: $276