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

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Dates, airline, and price
Dates	Airline	Price
01 Sep	Aer Lingus
06 Sep	Aer Lingus
19 Sep	Air Canada
05 Sep	Icelandair
25 Sep	Icelandair
15 Sep	Icelandair
06 Sep	Iberia Direct Flight
01 Sep	Iberia Direct Flight
15 Sep	Iberia Direct Flight
05 Sep	Iberia Direct Flight

deals for return flights from Washington to Madrid in September.

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Updated Jul 3, 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), September

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