Roundtrip Airfare From St. Louis to San Juan

No special codes or coupons are required. This roundtrip airfare to San Juan is available for booking until May 31, 2026.

Travel is available from St. Louis (STL) to San Juan (SJU) on select dates:

• Depart from STL: August 17-18, 23, 24-25, 21; September 1, 7, 9, 13-17, 20, 22-24, 26-30; October 1, 3-4, 6-10, 12-22, 24-31; November 1-5, 8-12, 15-18; January 12-13, 18-22, 24-28; February 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.
• Depart from SJU: August 28; September 11-12, 18-20, 23-24, 26-27, 30; October 1-4, 6-11, 14-16, 18, 21-25, 27-31; November 1-8, 10-15, 17-21, 25-27; December 4-6, 8-13, 15-19, 23-25, 31; January 15-17, 21-24, 27-30; February 3-6, 10-12, 19, 25-26, 28; March 11; April 29; May 2, 6, 9, 13, 27-28.

Fares are basic economy on American, United, Delta, and Southwest Airlines, with one stop. Most airlines allow a personal item and a carry-on bag, except United, which only permits a personal item.