STL to SJU from $373 in business – flightdeals.net

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One Way•Business Class

Lambert-Saint Louis International Airport

St. Louis, United States

Luis Muñoz Marín International Airport

San Juan, Puerto Rico

$469 USD

-20%$373 USD

Verified 15 days ago

July 2026

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29 30 1 2 3 4 5$673 6$593 7$593 8$583 9$583 10$583 11$583 12$528 13$562 14$528 15$528 16$528 17$562 18$583 19$514 20$483 21$510 22$523 23$538 24$538 25$538 26$417 27$417 28$417 29$422 30$417 31$508 1$508 2$417

Rare Availability

9% of dates checked are available within 10% of the lowest price

Thursday, July 30th, 2026

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