Cheapest return flights from St. Louis to San Juan in November from 187€

AirHint found the following cheapest return flights from St. Louis (STL) to San Juan (SJU) in November 2025 (see full year).

Return flights

17 Nov - 18 Nov Southwest Airlines
18 Nov - 21 Nov United
13 Nov - 16 Nov Frontier Airlines
08 Nov - 11 Nov Southwest Airlines
13 Nov - 22 Nov Southwest Airlines
27 Nov - 01 Dec Frontier Airlines
27 Nov - 02 Dec Frontier Airlines
24 Nov - 28 Nov Southwest Airlines
24 Nov - 29 Nov United
23 Nov - 29 Nov United

Also check the deals for one-way flights from St. Louis to San Juan in November.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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