Cheapest one-way flights from Washington to Brussels in December from 221€

AirHint found the following cheapest one-way flights from Washington (IAD) to Brussels (BRU) in December 2025 (see full year).

One-Way flights

08 Dec TAP
30 Dec TAP
18 Dec Frontier Airlines
20 Dec Frontier Airlines
30 Dec United direct
27 Dec United direct
26 Dec United direct
18 Dec Brussels Airlines direct
02 Dec United direct
08 Dec United direct

Also check the deals for return flights from Washington to Brussels 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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