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

Return flights

06 Dec - 18 Dec	TAP
28 Dec - 17 Jan	TAP
03 Dec - 10 Dec	Delta
05 Dec - 07 Dec	TAP
27 Dec - 17 Jan	KLM
30 Dec - 24 Jan	TAP
15 Dec - 10 Jan	TAP
12 Dec - 19 Dec	SWISS
12 Dec - 10 Jan	SWISS
26 Dec - 17 Jan	Lufthansa
15 Dec - 28 Dec	Air Canada
24 Dec - 17 Jan	Scandinavian Airlines
16 Dec - 05 Jan	SWISS
16 Dec - 31 Jan	Delta
16 Dec - 10 Jan	SWISS
24 Dec - 28 Dec	Lufthansa
26 Dec - 31 Dec	Lufthansa
21 Dec - 28 Dec	TAP
21 Dec - 29 Dec	SWISS
18 Dec - 27 Dec	SWISS

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

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 Milano in December from 373€

Return flights