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

Return flights

07 Jan - 12 Jan	Aeromexico
11 Jan - 15 Jan	Aeromexico
11 Jan - 11 Jan	Delta
25 Jan - 28 Jan	Aeromexico
11 Jan - 17 Jan	Aeromexico
28 Jan - 02 Feb	Aeromexico
28 Jan - 04 Feb	Aeromexico
28 Jan - 05 Feb	Aeromexico
09 Jan - 13 Jan	United
07 Jan - 12 Jan	United	direct
11 Jan - 17 Jan	United	direct
04 Jan - 08 Jan	Aeromexico
28 Jan - 01 Feb	Aeromexico
09 Jan - 12 Jan	United	direct
29 Jan - 02 Feb	Air Canada
31 Jan - 09 Feb	United

Also check the deals for one-way flights from Washington 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 Washington to Cancun in January from $275

Return flights