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

Return flights

13 Jan - 27 Jan	TAP
13 Jan - 20 Jan	TAP
28 Jan - 11 Feb	TAP
29 Jan - 01 Feb	TAP
14 Jan - 20 Jan	TAP
08 Jan - 18 Jan	TAP
15 Jan - 22 Jan	TAP
08 Jan - 15 Jan	TAP
06 Jan - 16 Jan	Air Canada
13 Jan - 27 Jan	American Airlines	direct
13 Jan - 20 Jan	Iberia	direct
16 Jan - 30 Jan	TAP
29 Jan - 03 Feb	American Airlines	direct

Also check the deals for one-way flights from Washington to Madrid 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 Madrid in January from $332

Return flights