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

Return flights

18 Oct - 25 Oct	Aeromexico
03 Oct - 07 Oct	Aeromexico
22 Oct - 29 Oct	Aeromexico
24 Oct - 27 Oct	Aeromexico
08 Oct - 17 Oct	Spirit Airlines
20 Oct - 27 Oct	jetBlue
16 Oct - 17 Oct	Spirit Airlines
03 Oct - 08 Oct	Spirit Airlines
03 Oct - 17 Oct	Spirit Airlines
08 Oct - 19 Oct	Spirit Airlines
20 Oct - 05 Nov	Spirit Airlines
22 Oct - 05 Nov	Spirit Airlines
18 Oct - 05 Nov	Spirit Airlines
16 Oct - 05 Nov	Spirit Airlines
24 Oct - 05 Nov	Spirit Airlines
23 Oct - 05 Nov	Spirit Airlines

Also check the deals for one-way flights from Boston 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 Boston to Cancun in October from $292

Return flights