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

Return flights

25 Jul - 24 Aug	Brussels Airlines
25 Jul - 24 Aug	United	direct
31 Jul - 03 Aug	Lufthansa
27 Jul - 31 Jul	TAP
23 Jul - 31 Jul	Turkish Airlines
24 Jul - 31 Jul	ITA Airways
30 Jul - 09 Aug	TAP
23 Jul - 27 Jul	TAP
25 Jul - 01 Aug	Air Canada
25 Jul - 01 Aug	Brussels Airlines	direct
22 Jul - 29 Jul	United	direct
24 Jul - 31 Jul	Brussels Airlines	direct
23 Jul - 31 Jul	Brussels Airlines	direct
30 Jul - 09 Aug	Brussels Airlines	direct
23 Jul - 27 Jul	Brussels Airlines	direct
31 Jul - 03 Aug	United	direct
27 Jul - 31 Jul	Brussels Airlines	direct

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

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.

Book a cheap hotel in Brussels

Cheap car rent in Brussels

Cheapest return flights from Washington to Brussels in July from $849

Return flights