AirHint found the following cheapest return flights from Boston (BOS) to Cancun (CUN) in January 2026 (see full year).

Return flights

16 Jan - 21 Jan	Delta
02 Jan - 09 Jan	Delta
02 Jan - 08 Jan	Delta	direct
01 Jan - 08 Jan	Delta	direct
01 Jan - 28 Feb	Aeromexico
27 Jan - 01 Feb	jetBlue
20 Jan - 04 Feb	Spirit Airlines
14 Jan - 20 Jan	Delta
04 Jan - 11 Jan	Delta
02 Jan - 10 Jan	Delta
03 Jan - 10 Jan	Delta
20 Jan - 07 Feb	Spirit Airlines
15 Jan - 20 Jan	jetBlue
15 Jan - 18 Jan	Aeromexico
29 Jan - 04 Feb	Spirit Airlines
19 Jan - 04 Feb	Spirit Airlines
29 Jan - 07 Feb	Spirit Airlines
19 Jan - 07 Feb	Spirit Airlines
15 Jan - 04 Feb	Spirit Airlines

Also check the deals for one-way flights from Boston to Cancun 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.

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Cheapest return flights from Boston to Cancun in January from 271€

Return flights