Deal found on November 2, 2026
St. Louis to San Juan
$257$42840% off
Round trip
Price dropped again: We sent this San Juan fare on Oct 21 at $263, it's now down to $257. That's well under the usual $360-436 range, with 4 different date options across November and December on Frontier. San Juan pairs a lively old town with beach time just minutes away, worth booking while fares stay this low.
Travel dates
Dates in December
e.g. Dec 2 – Dec 11 · 9 nights
Date options
4 at this price
Lowest we've seen
$171
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