AirHint found the following cheapest return flights from Los Angeles (LAX) to San Juan (SJU) in January 2026 (see full year).

Return flights

11 Jan - 25 Jan	Spirit Airlines
11 Jan - 01 Feb	Spirit Airlines
11 Jan - 18 Jan	Spirit Airlines
08 Jan - 25 Jan	Spirit Airlines
10 Jan - 25 Jan	Spirit Airlines
18 Jan - 25 Jan	Spirit Airlines
14 Jan - 25 Jan	Spirit Airlines
08 Jan - 18 Jan	Spirit Airlines
18 Jan - 08 Feb	Spirit Airlines
18 Jan - 01 Feb	Spirit Airlines
14 Jan - 01 Feb	Spirit Airlines
10 Jan - 18 Jan	Spirit Airlines
14 Jan - 18 Jan	Spirit Airlines
18 Jan - 07 Feb	Spirit Airlines
09 Jan - 25 Jan	Spirit Airlines

Also check the deals for one-way flights from Los Angeles to San Juan in January.

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 Los Angeles to San Juan in January from 313€

Return flights