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Cheapest one-way flights from St. Louis (STL) to San Juan (SJU), January

Select a price to book. see full year.

Dates, airline, and price
Dates	Airline	Price
17 Jan	Delta
18 Jan	Delta
19 Jan	Delta
20 Jan	Delta
16 Jan	American Airlines
14 Jan	Delta
15 Jan	Southwest Airlines
16 Jan	Southwest Airlines Direct Flight

deals for return flights from St. Louis to San Juan in January.

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Cheap car rent in Luis Munoz Marin Intl

Updated Jul 19, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from St. Louis (STL) to San Juan (SJU), January

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