AirHint found the following cheapest return flights from Newark (EWR) to San Juan (SJU) in December 2026 (see full year).

Return flights

07 Dec - 14 Dec	United	direct
01 Dec - 10 Dec	United	direct
05 Dec - 12 Dec	United	direct
14 Dec - 23 Dec	United	direct
12 Dec - 13 Dec	United	direct
07 Dec - 31 Dec	United	direct
04 Dec - 12 Dec	United	direct
15 Dec - 22 Dec	United	direct
18 Dec - 21 Dec	United	direct
18 Dec - 30 Dec	United	direct
07 Dec - 04 Jan	United
29 Dec - 05 Jan	United
13 Dec - 05 Jan	United
12 Dec - 05 Jan	United
21 Dec - 02 Jan	United
21 Dec - 01 Jan	United
18 Dec - 02 Jan	United
23 Dec - 03 Jan	United	direct

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

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Cheapest return flights from Newark to San Juan in December from 230€

Return flights