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Cheapest one-way flights from Washington (IAD) to Madrid (MAD), December

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Dates, airline, and price
Dates	Airline	Price
12 Dec	Iberia
14 Dec	American Airlines
15 Dec	British Airways
14 Dec	American Airlines Direct Flight
16 Dec	Air Canada
12 Dec	United Direct Flight
15 Dec	United Direct Flight
16 Dec	United Direct Flight

deals for return flights from Washington to Madrid in December.

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Updated Jul 13, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Washington (IAD) to Madrid (MAD), December

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