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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
08 Dec British Airways
29 Dec British Airways
09 Dec Iberia
Direct Flight
08 Dec United
Direct Flight
27 Dec United
Direct Flight
29 Dec United
Direct Flight
11 Dec Icelandair
12 Dec Iberia
11 Dec Iberia
Direct Flight
23 Dec Air Canada
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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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