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Cheap Flights from St. Louis to San Juan $250.46

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Cheapest Flights from St. Louis to San Juan (STL to SJU)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from St. Louis to San Juan (STL to SJU)

Question : Looking for the cheapest flight over the next 30 days?
Answer : December 6th offers bookings (as of November 28th) that are 48% below the average price for this route. Saving on booking fees means you'll have more cash in hand for the trip.

Question : Do travelers from Saint Louis typically stay in San Juan for very long?
Answer : The average time spent in San Juan by passengers flying from STL is nine days.

Question : If your plans are flexible, have you considered changing your departure day?
Answer : In December, Friday is your lowest-cost day to fly. Flexibility is paramount when booking travel plans in order to keep costs down.

Question : Do prices change more for this route than others?
Answer : Prices for this trip tend to fluctuate much more than others. However, the sooner you book, the better price you tend to get.