Cheap flights from St. Louis to Puerto Rico Island

View AU$381 flight on Thu, 27 Nov. 2025Opens in a new window

Popular airlines from St. Louis to Puerto Rico Island

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from St. Louis (STL) to Puerto Rico Island (SJU)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from St. Louis (STL) to San Juan (SJU)

February is typically the cheapest month to fly

From AU$232 - AU$786 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.