AirHint found the following cheapest return flights from San Juan (SJU) to Cancun (CUN) in October 2025 (see full year).

Return flights

17 Oct - 25 Oct	Arajet
28 Oct - 04 Nov	Copa
11 Oct - 15 Oct	Copa
12 Oct - 15 Oct	Copa
13 Oct - 16 Oct	Copa
20 Oct - 03 Nov	Copa
15 Oct - 19 Oct	Copa
17 Oct - 19 Oct	Copa
12 Oct - 18 Oct	Spirit Airlines
10 Oct - 13 Oct	Copa
11 Oct - 18 Oct	Spirit Airlines
10 Oct - 18 Oct	Spirit Airlines
24 Oct - 07 Nov	Spirit Airlines
24 Oct - 13 Nov	Spirit Airlines
24 Oct - 08 Nov	Spirit Airlines
17 Oct - 07 Nov	Spirit Airlines
31 Oct - 07 Nov	Spirit Airlines
31 Oct - 13 Nov	Spirit Airlines
31 Oct - 08 Nov	Spirit Airlines
31 Oct - 16 Nov	Spirit Airlines

Also check the deals for one-way flights from San Juan to Cancun in October.

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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Cheapest return flights from San Juan to Cancun in October from 204€

Return flights