Cheapest return flights from Washington to Barcelona in December from $366

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

Return flights

03 Dec - 12 Dec Icelandair
12 Dec - 16 Dec Icelandair
11 Dec - 13 Dec Icelandair
03 Dec - 12 Dec United direct
05 Dec - 11 Dec Air Canada
08 Dec - 15 Dec Air Canada
02 Dec - 07 Dec Aer Lingus
02 Dec - 07 Dec United direct
01 Dec - 08 Dec United
03 Dec - 21 Dec Air Canada
25 Dec - 15 Jan SWISS
24 Dec - 17 Jan British Airways
15 Dec - 10 Jan Scandinavian Airlines
28 Dec - 04 Jan Austrian Airlines
25 Dec - 04 Jan SWISS
23 Dec - 01 Jan Aer Lingus
22 Dec - 01 Jan Aer Lingus
12 Dec - 03 Jan British Airways
26 Dec - 03 Jan Lufthansa
17 Dec - 02 Jan Delta

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

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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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