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
02 Dec 09 Dec Frontier Airlines
04 Dec 13 Dec Frontier Airlines
16 Dec 21 Dec Frontier Airlines
21 Dec 28 Dec Sun Country Airlines
19 Dec 30 Dec Frontier Airlines
19 Dec 26 Dec Frontier Airlines
21 Dec 27 Dec Sun Country Airlines
21 Dec 26 Dec Frontier Airlines
23 Dec 23 Dec Southwest Airlines
22 Dec 31 Dec Frontier Airlines
28 Dec 03 Jan Frontier Airlines
27 Dec 03 Jan Sun Country Airlines
26 Dec 02 Jan Frontier Airlines
27 Dec 03 Jan United
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deals for one-way flights from Denver to San Juan in December.

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Updated Aug 26, 2026.

About these fares

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