Cheapest one-way flights from Washington (IAD) to Barcelona (BCN), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
21 Sep Porter Airlines (Canada) Ltd
07 Sep Icelandair
01 Sep Icelandair
06 Sep Icelandair
05 Sep Icelandair
02 Sep Porter Airlines (Canada) Ltd
04 Sep Icelandair
03 Sep Frontier Airlines
18 Sep TAP
07 Sep United
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deals for return flights from Washington to Barcelona in September.

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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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