Cheapest return flights from Washington to Brussels in September from 549€

AirHint found the following cheapest return flights from Washington (IAD) to Brussels (BRU) in September 2025 (see full year).

Return flights

25 Sep - 01 Oct Turkish Airlines
28 Sep - 18 Oct Turkish Airlines
27 Sep - 18 Oct Turkish Airlines
20 Sep - 23 Sep Turkish Airlines
20 Sep - 24 Sep Turkish Airlines
21 Sep - 28 Sep Turkish Airlines
20 Sep - 11 Oct Turkish Airlines
18 Sep - 25 Sep Turkish Airlines
20 Sep - 27 Sep Frontier Airlines
18 Sep - 25 Oct TAP
19 Sep - 23 Sep Royal Air Maroc
28 Sep - 18 Oct United direct
25 Sep - 01 Oct Brussels Airlines direct
27 Sep - 18 Oct Brussels Airlines direct
18 Sep - 25 Oct Brussels Airlines direct
19 Sep - 23 Sep Brussels Airlines direct
21 Sep - 28 Sep Brussels Airlines direct
18 Sep - 25 Sep Brussels Airlines direct
20 Sep - 24 Sep Brussels Airlines direct

Also check the deals for one-way flights from Washington to Brussels in September.

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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