St. Louis, USA → San Juan, Puerto Rico

May 31, 2026

SUMMER: St. Louis to San Juan, Puerto Rico for only $185 roundtrip

Summer flights from St. Louis to San Juan, Puerto Rico for only $185 roundtrip with American Airlines.

March 31, 2025

US cities to San Juan, Puerto Rico from only $181 roundtrip

Cheap flights from US cities to San Juan, Puerto Rico from only $181 roundtrip with United Airlines.