Cheapest return flights from Denver (DEN) to San Juan (SJU), October

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
20 Oct 28 Oct Frontier Airlines
02 Oct 06 Oct Frontier Airlines
02 Oct 07 Oct Frontier Airlines
15 Oct 19 Oct Frontier Airlines
02 Oct 03 Oct Frontier Airlines
02 Oct 04 Oct Frontier Airlines
02 Oct 05 Oct Frontier Airlines
02 Oct 08 Oct Frontier Airlines
02 Oct 02 Oct Frontier Airlines
15 Oct 19 Oct United
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deals for one-way flights from Denver to San Juan in October.

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Updated May 28, 2026.

About these fares

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