Roundtrip One-Stop St Louis to/from San Juan Puerto Rico from $205 (Travel August 2025 - May 2026)

American, United, Delta and Southwest Airlines have round trip airfares travelling to and from St Louis MO (STL) and San Juan Puerto Rico (SJU) for $203, making 1 stop. Stopovers range from 1 - 11 hours, depending on the airline/flight you choose. These are all basic economy. All but United allows a personal item and a carry-on bag. United only allow a personal item. Travel Availability: Departs STL: Aug 17-18, 23, 24-25, 21; Sept 1, 7, 9, 13-17, 20, 22-24, 26-30; Oct 1, 3-4, 6-10, 12-22, 24-31; Nov 1-5, 8-12, 15-18; No Dec; Jan 12-13, 18-22, 24-28; Feb 1-4, 7-10, 17, 23-25; March 2-3, 10, 17, 23-25, 30-31; April 1, 6-7, 13-14, 20-21, 25, 26-29; May 2, 4-6, 9-10, 12-13, 17, 19, 24