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

Return flights

31 Jan - 06 Feb	Frontier Airlines
30 Jan - 06 Feb	Breeze Airways
26 Jan - 29 Jan	United	direct
23 Jan - 29 Jan	Frontier Airlines
22 Jan - 29 Jan	Air Canada
31 Jan - 05 Feb	Frontier Airlines
31 Jan - 05 Feb	United	direct
27 Jan - 06 Feb	Aeromexico
31 Jan - 06 Feb	United	direct
31 Jan - 04 Feb	United	direct
18 Jan - 25 Jan	Air Canada
27 Jan - 31 Jan	Avianca
20 Jan - 25 Jan	Air Canada
20 Jan - 24 Jan	Air Canada
20 Jan - 27 Jan	Air Canada
19 Jan - 24 Jan	Air Canada
22 Jan - 25 Jan	Air Canada
27 Jan - 05 Feb	Aeromexico
26 Jan - 02 Feb	Frontier Airlines
30 Jan - 06 Feb	United	direct

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 271€

Return flights