AirHint found the following cheapest return flights from Washington (DCA) to Mexico City (MEX) in January 2026 (see full year).

Return flights

17 Jan - 19 Jan	Air Canada
30 Jan - 03 Feb	Frontier Airlines
15 Jan - 19 Jan	Air Canada
21 Jan - 27 Jan	Frontier Airlines
16 Jan - 20 Jan	Aeromexico
23 Jan - 28 Jan	Aeromexico
19 Jan - 23 Jan	Aeromexico
19 Jan - 22 Jan	Aeromexico
18 Jan - 20 Jan	Air Canada
23 Jan - 27 Jan	American Airlines
19 Jan - 26 Jan	American Airlines
29 Jan - 02 Feb	Frontier Airlines
22 Jan - 01 Feb	Aeromexico
30 Jan - 06 Feb	Hawaiian Airlines
29 Jan - 01 Feb	Aeromexico
30 Jan - 01 Feb	Aeromexico

Also check the deals for one-way flights from Washington to Mexico City 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 Mexico City in January from $501

Return flights