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

Return flights

30 Jan - 05 Feb	Frontier Airlines
29 Jan - 01 Feb	Frontier Airlines
17 Jan - 20 Jan	United
19 Jan - 26 Jan	Delta
21 Jan - 25 Jan	United
22 Jan - 27 Jan	Delta
20 Jan - 27 Jan	Delta
19 Jan - 24 Jan	Delta
29 Jan - 31 Jan	United
23 Jan - 27 Jan	Delta
22 Jan - 26 Jan	Delta
28 Jan - 03 Feb	Frontier Airlines
28 Jan - 02 Feb	Air Canada
16 Jan - 20 Jan	Air Canada
30 Jan - 01 Feb	Frontier Airlines
31 Jan - 01 Feb	Delta
28 Jan - 01 Feb	United

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 408€

Return flights