St Louis (STL) to San Juan (Any) in December 2026

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CheapestLowHigherTypical $440

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Decemberfrom $287 · 31 trips

St Louis (STL) to San Juan (Any): what SlickTrip has seen

Cheapest economy round trip (7 nights) in December 2026: $287 leaving Wed, Dec 2, for 1 traveler.

St Louis (STL) to San Juan (Any) by month

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Cheap economy Class Flights from St Louis (STL) to San Juan (Any) December

Find the best deals on economy class flights. Compare prices for direct flights, one-stop, and multi-stop options.

St Louis (STL) to San Juan (Any) in December 2026

Cheapest round trip of 5, 7, 10 nights fare in December 2026: $287 on 2026-12-02, for 1 traveler.

Why Choose Economy Class Flights from St Louis (STL) to San Juan (Any)?

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A month of fares at a glance for december travel
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Planning a trip from St Louis (STL) to San Juan (Any) in december? SlickTrip shows the cheapest economy fares across airlines, nonstop or with stops. Set an alert and we watch the route for you, then email you when the price drops. Booking happens on the airline's or travel site's own page.

October 2027

St Louis (STL) to San Juan (Any): what SlickTrip has seen

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