Cheapest return flights from Washington to Madrid in December from 285€

AirHint found the following cheapest return flights from Washington (IAD) to Madrid (MAD) in December 2025 (see full year).

Return flights

01 Dec - 09 Dec TAP
05 Dec - 08 Dec TAP
05 Dec - 11 Dec TAP
04 Dec - 11 Dec TAP
02 Dec - 09 Dec TAP
11 Dec - 13 Jan TAP
04 Dec - 09 Dec TAP
02 Dec - 10 Dec TAP
06 Dec - 13 Dec TAP
02 Dec - 16 Dec TAP
11 Dec - 14 Dec TAP
14 Dec - 15 Jan TAP
30 Dec - 24 Jan KLM
28 Dec - 17 Jan Lufthansa
03 Dec - 12 Jan TAP
31 Dec - 11 Jan TAP
10 Dec - 12 Jan TAP
30 Dec - 10 Jan SWISS
27 Dec - 17 Jan Lufthansa
29 Dec - 08 Jan SWISS

Also check the deals for one-way flights from Washington to Madrid in December.

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