Cheapest return flights from San Diego to San Juan in December from $505

AirHint found the following cheapest return flights from San Diego (SAN) to San Juan (SJU) in December 2025 (see full year).

Return flights

01 Dec - 08 Dec Frontier Airlines
23 Dec - 26 Dec Sun Country Airlines
23 Dec - 30 Dec American Airlines
22 Dec - 26 Dec Sun Country Airlines
23 Dec - 28 Dec American Airlines
21 Dec - 26 Dec Sun Country Airlines
22 Dec - 01 Jan Sun Country Airlines
26 Dec - 30 Dec Southwest Airlines
22 Dec - 27 Dec Sun Country Airlines
26 Dec - 31 Dec Southwest Airlines
23 Dec - 27 Dec Sun Country Airlines
24 Dec - 02 Jan Sun Country Airlines
29 Dec - 03 Jan Sun Country Airlines

Also check the deals for one-way flights from San Diego to San Juan in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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