This deal has expired.
It was found on April 7, 2026. Typical price for this route is $336. Fares like this come and go fast. Get the next one by email below.
Past deal
St. Louis to San Juan
$176$33648% off
Round trip
Caribbean without a passport! Frontier nonstop from St. Louis to San Juan, Puerto Rico for $176 - perfect for tropical beaches, El Yunque rainforest, and vibrant culture.
Travel dates
Apr 28 to May 7
Date options
4 at this price
Lowest we've seen
$171
Get deals like this from St. Louis
Free email alerts when we find a fare worth booking. No spam.