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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
07 Dec 17 Dec Southwest Airlines
11 Dec 16 Dec Southwest Airlines
04 Dec 13 Dec Southwest Airlines
31 Dec 09 Jan United
31 Dec 10 Jan United
20 Dec 29 Dec Frontier Airlines
18 Dec 25 Dec Frontier Airlines
28 Dec 03 Jan Frontier Airlines
19 Dec 27 Dec Frontier Airlines
27 Dec 02 Jan Frontier Airlines
26 Dec 01 Jan Frontier Airlines
27 Dec 08 Jan Frontier Airlines
18 Dec 26 Dec Frontier Airlines
27 Dec 04 Jan Frontier Airlines
26 Dec 02 Jan Frontier Airlines
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deals for one-way flights from Denver to San Juan in December.

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Updated Jul 22, 2026.

About these fares

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