Cheapest return flights from Washington to Barcelona in October from $463

Best time to book flights for Washington (IAD) to Barcelona (BCN) flights at AirHint

AirHint found the following cheapest return flights from Washington (IAD) to Barcelona (BCN) in October 2025 (see full year).

Return flights

19 Oct - 25 Oct Icelandair
18 Oct - 25 Oct Icelandair
01 Oct - 08 Oct Air Canada
07 Oct - 14 Oct Air Canada
08 Oct - 15 Oct Air Canada
28 Oct - 04 Nov Air Canada
06 Oct - 13 Oct Iberia
13 Oct - 20 Oct Iberia
24 Oct - 31 Oct United direct
09 Oct - 14 Oct Air Canada
23 Oct - 30 Oct Air Canada
13 Oct - 02 Nov Scandinavian Airlines
31 Oct - 07 Nov Aer Lingus
26 Oct - 02 Nov SWISS
27 Oct - 03 Nov Lufthansa
25 Oct - 01 Nov United direct

Also check the deals for one-way flights from Washington to Barcelona in October.

Skyscanner

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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